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What Is Pollination? | POLLINATION | The Dr Binocs Show | Peekaboo Kidz

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A greenhouse (also called a glass-house or hothouse) is a building where plants such as flowers and vegetables are grown. It usually has a glass or translucent plastic roof. Many greenhouses also have glass or plastic walls. Greenhouses warm up during the day via penetration of the sun's rays which heat the plants, soil and structure. This heat is given up gradually throughout the night.

Types of greenhouses

Greenhouses come in many shapes and sizes, with different functions. Some people have small greenhouses in their backyard, or as a lean-to attached to their home, called mini greenhouses, or tomato houses. They want to start off their seeds and seedlings in a protected environment as well as those growing plants that need warmer conditions. Others, wishing to extend their living space, have house extensions in the form of mini-conservatories. Commercial companies usually have larger greenhouses for horticultural purposes, but have more substantial structures for plant displays where the public is admitted. For the same reason, botanic gardens usually have a high proportion of greenhouses with substantial structures

Role of greenhouses

Many vegetables and flowers are grown in greenhouses in late winter and early spring, when it is still too cold to grow plants outside. Then these plants move into the soil outside as the weather warms up. Greenhouses are used to grow crops in cold countries such as Canada. The largest group of greenhouses in the world is in Leamington, Ontario (in Canada), where about 200 acres (0.8 km²) of tomatoes are grown in glass greenhouses.

Gardening in greenhouses

Gardening and growing plants in greenhouses is different from growing plants outside as no rain can get inside a greenhouse, so gardeners have to water plants. Also, greenhouses can get very hot from the sun's heat, so gardeners have to make sure that it does not get too hot for the plants. Greenhouses usually have vents that can be opened to let excess heat out. Some greenhouses have electric exhaust fans that automatically turn on if it gets too hot in the greenhouse. A greenhouse is the place for tender plants such as tomatoes, cucumbers, and aubergines.

Roman gardeners grew cucumbers in frames covered with oiled cloth or with sheets of mica. In the 1500s, Italian gardeners built structures for the tropical plants that explorers brought back to Italy. Jules Charles built the first modern greenhouse in Holland. In the 1800s, large greenhouses were built in England. The greenhouse concept also appeared in the Netherlands and then England in the 17th century

Woods, May (1988) Glass houses: history of greenhouses, orangeries and conservatories. Aurum Press, London, .

Mini Greenhouse nhà kính mini

Images for kids

Recreational Greenhouse at Palazzo Parisio, Malta.

Young tomato plants for transplanting in an industrial-sized greenhouse in the Netherlands

Greenhouses in the Westland region.

Victoria amazonica (giant Amazon waterlilies) in a large greenhouse at the Saint Petersburg Botanical Garden.

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A greenhouse (also called a glass-house or hothouse) is a building where plants such as flowers and vegetables are grown. It usually has a glass or translucent plastic roof. Many greenhouses also have glass or plastic walls. Greenhouses warm up during the day via penetration of the sun's rays which heat the plants, soil and structure.

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We will discuss about the different uses of plants. We know plants are very useful for us.

There are many kinds of plants, bushes and trees in our surroundings. We enjoy various types of benefits from different types of plants.

Let us know some of the following uses of plants.

: Plants are the main source of our food. We use different parts of different plants as food.

(i) We eat leaves of some plants like spinach, radish, gram, fenugreek, etc.

The leaves are used as cooked or green food. They are rich in vitamins and minerals.

(ii) Roots of radish, carrot, cucumber, beet etc., are eaten as salad.

(iii) We mostly eat cereals or food grains. The cereals are seeds of some plants belonging to the grass family. We prepare many types of food from the grains of rice, wheat, gram, barley, jowar, millet, maize, etc.

Seeds of some plants are used as pulses like gram, yellow-gram, pea, green-gram, lentil, etc.

Seeds of some plants are oily; oil is taken from the seeds like sesame, mustard, sunflower, etc. This oil is used in preparing many kinds of food and also for some other purposes. Ground nut oil, coconut oil, mustard oil, etc. are also used for preparing food.

(iv) Fruits of some plants are used as food. These fruits are mango, grape, apple, orange, pine-apple, etc. These fruits are eaten raw, as they are tasty. They are juicy and rich in vitamins and minerals.

Almond, chestnut, pistachio, raisin, etc. are used as dry fruits.

(v) Some plants give us vegetables. Potato, tomato, turnip, ladyfinger, bean, pea, cauliflower, cabbage, pumpkin, bottle-gourd, etc. are some of the vegetables. They are cooked for eating. These vegetables are rich in vitamin, iron and other minerals.

(vi) We get spices from plants. The spices give the vegetables good flavor and make them delicious. Coriander, pepper, clove, cumin, cardamom, cinnamon, etc. are some common spices to make the food tasty.

(vii) We take coffee and tea. We get them from plants. Coffee is made from the seeds of coffee-plant. Tea is prepared from the leaves of tea-plant.

(viii) We get juice from sugar-cane. Sugar is made from this juice. With the help of sugar we make different kinds of sweet dishes, cakes, chocolate etc.

We use these plants to cure patients suffering from various diseases.

6. Cotton: We get cotton from cotton plants. It is used to make all types of cotton clothes such as bed-sheets, towels, etc.

There are small and big plants that not only make our land green and pleasant but also help us in many ways in every walk of life.
From Uses of Plants to HOME PAGE

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Uses of Plants | Plants as Food | Plants as Medicines, Paper, Rubber, Perfumes

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We will discuss about the different uses of plants. We know plants are very useful for us. There are many kinds of plants, bushes and trees in our surroundings. We enjoy various types of benefits from different types of plants. Let us know some of the following uses of plants.

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Anchoring and supporting the plant: Root anchor the plant firmly in the soil.

Absorption and Conduction: The roots absorb water and nutrients from the soil in mineral solution through the root hairs. The root hairs absorb the nutrients and conduct them to the shoot system via xylem through capillary action.

Transportation: Absorbed water and minerals from the soil are transported to the shoot system through the root.

Holding the soil together: Roots help to hold the soil together. This prevents washing away of the soil by wind or water.

Storage: Some roots are modified for the storage of food. e.g., radish, carrot, etc

Extra or Mechanical Support: In some plants, the roots support heavy horizontal branches. In Banyan, maize, sugarcane, bombax, etc., the roots protect the shoot from falling.

Photosynthesis: Root plays a crucial role in the process of photosynthesis. Leaves need water, CO2, and sunlight to perform photosynthesis. They get water from the root system and release excessive water through the process of transpiration. At the time when the water vapors release out of the stomata through tiny pores, CO2 enters.

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Explained! 3 Types of Roots, Functions of Roots, TapRoot, Fibrous & Adventitious Roots

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Anchoring and supporting the plant: Root anchor the plant firmly in the soil. Absorption and Conduction: The roots absorb water and nutrients from the soil in mineral solution through the root hairs. The root hairs absorb the nutrients and conduct them to the shoot system via xylem through capillary action.

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Explained! Plant Stem: Parts of a Stem, Types & Functions of Stem

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Let's learn about the plant stem, parts of a stem, types of stem and functions of the stem. Based on their adaptations, there are three types of stems: Underground stem, Aerial stem, Sub- aerial stem.

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Explained! Parts of a Leaf, Types of Leaves, Functions of Leaves, Leaf Venations

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Learn about the definition of a leaf, parts of a leaf, types of leaves and the main functions of leaves. There are three main parts of a leaf - Leaf base, leaf lamina, and petiole.

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Before understanding the " Part of a Flower ", we will know the role of flowers for the plants.

Flowers are the reproductive part of a plant. It makes seeds which in turn make new plants. Along with reproduction, flowers are also a rich source of food for other living organisms such as insects, birds, animals and humans.

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Part of a Flower - Fun Facts About Flowers

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Before understanding the " Part of a Flower ", we will know the role of flowers for the plants. Flowers are the reproductive part of a plant. It makes seeds which in turn make new plants. Along with reproduction, flowers are also a rich source of food for other living organisms such as insects, birds, animals and humans.

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Macmillan Education India Private Limited

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Macmillan Education India Private Limited

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Structure and Functions of Stems | Macmillan Education India

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Macmillan Education India Private Limited

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Structure and Functions of Leaves | Macmillan Education India

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Parts Of A Plant | The Dr. Binocs Show | Learn Videos For Kids

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Do you have plants in your home or garden? Plants are all shapes and sizes. They are important for people and animals. They make our lives better in many ways. How do plants help us? Read to find out!

GETTY IMAGES

Plants give us oxygen.

Oxygen is in the air we breathe. All living things need it. Plants make oxygen.

BARBARA RICH-GETTY IMAGES

Plants give us food.

Many plants are good to eat. Vegetables are plants. Fruits, nuts, beans, and seeds come from plants.

KENNY WILLIAMSON-ALAMY

Plants give us shade.

Trees are the largest plants. In the summer, trees are full of leaves. The trees make shadows. On a hot, sunny day, sit under a tree. You will stay cool in its shade.

GETTY IMAGES

Plants give us shelter × shelter GETTY IMAGES a place to live ( ) Some snakes use logs for shelter. .

Birds, insects, and many other animals live in trees and other plants. People use wood from trees to build homes.

OXFORD SCIENTIFIC/GETTY IMAGES

Science Scoop

Did you know that some plants eat bugs? Each leaf of the Venus flytrap holds a sweet juice × juice PAUL VOZDIC-GETTY IMAGES a liquid that can be squeezed out of plants and fruits ( ) Sarah drinks orange juice for breakfast. . When a bug tries to sip the juice, the leaf snaps shut. It takes about a week for the plant to finish its insect meal!

Think!

What is your favorite flower? Why? Describe it!

Stay Away from Me!

Plants can't run from animals that want to eat them. But they do have ways to stay safe. Read the clues to learn about some plant defenses. Look at the photos. Then write the letter of the plant that matches each clue.

A: ED RESCHKE-GETTY IMAGES; B: GETTY IMAGES; C: ANNA GRIGORJEV-EYEEM/GETTY IMAGES; D: DANITA DELIMONT/GETTY IMAGES

1. This plant grows poisonous fruits. The fruits are small red berries.

2. This plant has many sharp white spines. They stop animals from eating it.

3. If you touch this plant, you can get a rash. Each stem has three green leaves.

4. This plant has a pretty flower. Be careful! The pointy thorns on its stems can prick you.

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Do you have plants in your home or garden? Plants are all shapes and sizes. They are important for people and animals. They make our lives better in many ways. How do plants help us? Read to find out! Plants...

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Rubber is a very important and useful substance. Natural rubber is made from the milky sap of a plant. There are several kinds of plants that can produce rubber. One kind,...

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We will discuss about the different uses of plants. We know plants are very useful for us.

There are many kinds of plants, bushes and trees in our surroundings. We enjoy various types of benefits from different types of plants.

Let us know some of the following uses of plants.

: Plants are the main source of our food. We use different parts of different plants as food.

(i) We eat leaves of some plants like spinach, radish, gram, fenugreek, etc.

The leaves are used as cooked or green food. They are rich in vitamins and minerals.

(ii) Roots of radish, carrot, cucumber, beet etc., are eaten as salad.

(iii) We mostly eat cereals or food grains. The cereals are seeds of some plants belonging to the grass family. We prepare many types of food from the grains of rice, wheat, gram, barley, jowar, millet, maize, etc.

Seeds of some plants are used as pulses like gram, yellow-gram, pea, green-gram, lentil, etc.

Seeds of some plants are oily; oil is taken from the seeds like sesame, mustard, sunflower, etc. This oil is used in preparing many kinds of food and also for some other purposes. Ground nut oil, coconut oil, mustard oil, etc. are also used for preparing food.

(iv) Fruits of some plants are used as food. These fruits are mango, grape, apple, orange, pine-apple, etc. These fruits are eaten raw, as they are tasty. They are juicy and rich in vitamins and minerals.

Almond, chestnut, pistachio, raisin, etc. are used as dry fruits.

(v) Some plants give us vegetables. Potato, tomato, turnip, ladyfinger, bean, pea, cauliflower, cabbage, pumpkin, bottle-gourd, etc. are some of the vegetables. They are cooked for eating. These vegetables are rich in vitamin, iron and other minerals.

(vi) We get spices from plants. The spices give the vegetables good flavor and make them delicious. Coriander, pepper, clove, cumin, cardamom, cinnamon, etc. are some common spices to make the food tasty.

(vii) We take coffee and tea. We get them from plants. Coffee is made from the seeds of coffee-plant. Tea is prepared from the leaves of tea-plant.

(viii) We get juice from sugar-cane. Sugar is made from this juice. With the help of sugar we make different kinds of sweet dishes, cakes, chocolate etc.

We use these plants to cure patients suffering from various diseases.

6. Cotton: We get cotton from cotton plants. It is used to make all types of cotton clothes such as bed-sheets, towels, etc.

There are small and big plants that not only make our land green and pleasant but also help us in many ways in every walk of life.
From Uses of Plants to HOME PAGE

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Uses of Plants | Plants as Food | Plants as Medicines, Paper, Rubber, Perfumes

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We will discuss about the different uses of plants. We know plants are very useful for us. There are many kinds of plants, bushes and trees in our surroundings. We enjoy various types of benefits from different types of plants. Let us know some of the following uses of plants.

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Plants that grow on land are called terrestrial plants. There are various kinds of terrestrial plants depending on different habitats.

Plants of cold hilly areas: It is very cold in winter in hilly places like Ooty, Kashmir, Darjeeling and the Himalayan ranges including Himachal Pradesh. There is snowfall in some areas. The trees that grow here have to survive the cold and snowfall. Instead of flowers they have cones and are called conifers. The cones have seeds in them. Conifers have needle-like leaves which are very tough and can survive the cold and snow. The sloping shape of the trees makes the snow fall off easily.

The main plants of these areas are pine, spruce, cedar (deodar) and fir trees. These trees have straight and tall trunks and needle like leaves. They are called coniferous trees. These trees keep their leaves green all throughout the year and so they are called evergreen trees. The spruce trees are used as Christmas trees.

Oak, maple, birch and beech trees shed their leaves in winter to protect themselves from the cold. New leaves grow in spring. They are called deciduous trees.

Plants of the plains: The trees and plants of the plains mostly have many branches and numberless leaves. The leaves are renewed periodically. Teak, babul, shisham, palash, etc. are some of the common trees of the plains.

Plants of hot and damp areas: Many kinds of plants grow best where it is hot and wet. Palm, tamarind, rubber and coconut are some of the trees that grow well in this type of climate. Eastern and western sea-coasts of south-India are such regions. The trees of such areas are evergreen and they usually have a large number of leaves and they do not shed their leaves in winter.

Plants of marshy land: Places that have clayey soil and plenty of water and the water cannot drain away so it collects in the soil. Mangrove trees grow in such marshy places or swamps. Roots of the plants in marshy lands have breathing roots that grow above the ground to take in the air they need instead of under the soil. Such roots are called aerial or breathing roots.

There are some unusual and strange kinds of plants which trap and eat insects. Venus fly trap plant is a marshy land plant.

Plants of the grass family: Some common varieties of plants that belong to the grass-family are rice, wheat, jowar, bajra, sugarcane, bamboo etc.. The plants of this family provide food for us and animals.

Plants in deserts: The ground in deserts is dry. There is very little water as it rains very rarely. Yet plants live and survive. Their roots are adapted to get whatever water is available. Plants like cactus of many kinds have roots that are spread far out just under the surface of the soil. They can quickly catch even the smallest amount of water. The mesquite bush has roots that go down 20 meters in search of water.

Desert plants normally have small leaves. The leaves of cactus are like sharp spines. This prevents loss of water from the leaves. The cactus plant stores food and water in its thick and fleshy stems covered with thorns. When there is no rain the cactus uses the water in its stem. Cactus grows flowers too.
From Plants living on Land to HOME PAGE

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Plants living on Land | Various kinds of Terrestrial Plants | Plants in Deserts

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Plants that grow on land are called terrestrial plants. There are various kinds of terrestrial plants depending on different habitats. Plants of cold hilly areas: It is very cold in winter in hilly places like Ooty, Kashmir, Darjeeling and the Himalayan ranges including Himachal Pradesh. There is snowfall in some areas.

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We will discuss about the plants living in water. Plants growing in water are called aquatic plants. There are three types of aquatic plants.

(i) Floating plants: There are some plants which float on water. Some plants like duckweed, green-alge, wolfia, water-hyacinth and pistia are some of the floating plants that float freely on top of the water. They are called floating plants. They have spongy bodies. Like a sponge there are lots of empty spaces throughout their body and are filled with air. This makes the plants light enough to float.

(ii) Fixed plants: Some plants like water-lily and lotus have roots that fix the plants in the mud at the bottom of the pond. They are known as fixed aquatic plants. Roots of such plants are fixed in the soil at the bottom of a pond. They have plate-like leaves that float over the surface of water. The stomata in the leaves are on the upper side. The stems are hollow and very light. This helps the leaves to float. The stems are very flexible. They bend with the flow of water so they do not get damaged by strong current.

(iii) Underwater plants: Some plants like pondweed, tape-grass, hydrilla, etc. are some common plants which live and grow under water completely. They are called underwater or submerged plants. Their roots fix them in the muddy soil. These plants have narrow, thin leaves without pores. These plants move along with the current. Such plants have very delicate shoots. They breathe through their body surface. The stems are flexible and have air spaces. We can grow such plants in aquarium.
From Plants living in Water to HOME PAGE

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Plants living in Water | Three types of Aquatic Plants | Floating & Fixed Plants

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We will discuss about the plants living in water. Plants growing in water are called aquatic plants. There are three types of aquatic plants. (i) Floating plants: There are some plants which float on water. Some plants like duckweed, green-alge, wolfia, water-hyacinth and pistia are some of the floating plants that float freely on top of the water.

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Fourth grade has been designed in accordance with the recommended topics. In this grade we will cover science, math and English in very exciting and interesting way. Science, Math and English are very vast subjects and hence it is indeed very difficult to integrate all the related aspects of various topics in a small and expressive way like this. Special importance is given for creating attractive layout on developing the concepts rather than merely providing information.

However, utmost care has been taken to represent the matters in a very lucid way to mitigate the inquisitiveness of the young minds for science, math and English of the 4th grade standard.

Living things Adaptation in Animals Animals living on Land Animals living in Water Animals living on both Land and Water Animals living on Trees Adaptation for Food in Animals Adaptation for Protection in Animals Adaptation in Plants Plants living on Land Plants living in Water Food for Plants Plant and its Stem Plant and its Flowers and Fruits Why are Leaves Green? How do Plants make Food? Uses of Plants Interdependence of Plants and Animals Producers and Consumers Care of Animals Animals that give Birth to Babies Reproduction in Animals Insects that Lay Eggs Food and Food Preservation Proteins to Grow Carbohydrates for Quick Energy Fats for Energy and Warmth Vitamins for Good Health Minerals for Good Health Water is Necessary for Our Body Balanced Diet Care of Food Cooking Food Preserving Food Human Body, Health and Hygiene Skeleton System Digestive System Excretory System Circulatory System Respiratory System Nervous System Teeth and Microbes Process of Digestion Eating Habits Kinds of Teeth Structure of a Tooth Taking Care of Our Teeth Microbes and their Kinds Safety at Home Safety at School Safety on the Ground Safety on the Road Importance of First Aid Clothes we Wear Water in Our Life Purified Water Save and Store Purified Water Sanitation Disposal of Liquid Wastes and Solid Wastes Prevention of Diseases and Harmful Germs Matter and Materials States of Matter Change of State of Matter Properties of Matter Properties of Matter Homogeneous Solution Air, Water and Weather Weather Changes The Earth's Water Rotatory Motion of the Earth Revolving Motion of the Earth Factor Behind Clouds and Rain Influence and Effect of Weather Cloud, Dew, Fog, Frost and Snow The Planets and The Solar System Orbits of the Planets Force on a Moving Body Kinds of Forces Energy and Forms of Energy Conversion of Energy Sources of Energy Effects of Air and Water Pollution Biodegradable and Non-biodegradable Waste Layers of Soil Kinds of Soil Fertility of Soil Different Crops Worksheet on Adaptation in Animals Worksheet on Adaptation in Plants Worksheet on How Plants make Food Worksheet on Plant and its Different Parts Worksheet on uses of Plants and Animals Worksheet on Interdependence of Plants and Animals Worksheet on Reproduction in Animals Worksheet on Food and Food Preservation Worksheet on Human Body, Health and Hygiene Worksheet on Digestion Worksheet on Teeth and Microbes Worksheet on Clothes We wear Worksheet on Safety and First Aid Worksheet on Water in Our Life Worksheet on Sanitation and Harmful Germs Worksheet on Matter and Materials Worksheet on Air, Water and Weather Worksheet on Our Universe Worksheet on Force, Work and Energy Worksheet on Our Environment Worksheet on Soil and Crops From Biodegradable and Non-biodegradable Waste to HOME PAGE

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Fourth Grade | Fourth Grade Science | Fourth Grade Math | Fourth Grade English

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Fourth grade has been designed in accordance with the recommended topics. In this grade we will cover science, math and English in very exciting and interesting way. Science, Math and English are very vast subjects and hence it is indeed very difficult to integrate all the related aspects of various topics in a small and expressive way like this.