Class IV Science -Plants Adaptation


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Summary of chapter -Adaptations-How Plants Survive of class IV,

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Class IV Science -Plants Adaptation

  1. 1. Adaptations How Plants Survive
  2. 2. Types of Plants  Terrestrial Plants  Plants that grow on land  Aquatic Plants  Plants that grow in water  Insectivorous Plants  Plants that are carnivorous in nature  Non- Green Plants
  3. 3. Terrestrial Plants 1. Plants in Plain  May have several branches.  They can survive in very hot climate, and may shed most their leaves in autumn.  Example : Neem, Peepal, Gulmohar,
  4. 4. Terrestrial Plants 2.Plants on Mountains  These plants are usually tall, straight and have a cone shape.  They are flowerless  They have cones with seeds inside them.  Leaves of these plants are needle-like  Have a waxy coating to prevent any damage from snow.  Example: Pine, Deodar and Fir Pine
  5. 5. Terrestrial Plants 3.Plants in Desert  They don ‘t any leaves or have very few of them.  Photosynthesis is carried out by the stems.  Most plants have thorns.  They store water in the stems, which become fleshy.  Example :Cactus, date palms. Cactus
  6. 6. Terrestrial Plants 4 .Plants in area of Heavy rainfall  These plants have leaves that remain green almost all year round, and are called evergreen trees.  Example : Rubber tree and teak tree  Smaller plants like sugarcane, rice, cotton, pepper also grow here.  Rice RubberRicepepper
  7. 7. Terrestrial Plants 5. Plants in swampy Areas  Places where the soil is very sticky and clayey are called marshy (swampy) areas.  It becomes very difficult for plants to grow here because air cannot reach the roots. And have breathing roots to take in air.  Example :Mangroves with breathing roots
  8. 8. Terrestrial Plants 6 .Plants on Sea Cost  They can survive on Salty water  Prefers area of heavy rainfall  Seeds are dispersed by water  Example : coconut tree
  9. 9. Aquatic Plants  1) Floating Plants:  These are light, spongy and float on the surface of the water. Duckweed Water hyacinth
  10. 10. Aquatic Plants  2) Fixed Plants:  Have roots which are fixed to the bottom of the pond.  Have long, hollow stem to reach the surface of the water.  Have broad and waxy coated leaves to prevent them from rotting. Example : Lotus, Water Lily  3) Underwater Plants  These have narrow leaves without any stomata.  They breathe through the surface and keep the water clean  Example :tape grass, pond weed
  11. 11. Insectivorous Plants  Plants are carnivorous in nature.  Their leaves are modified to trap insects (Venus Flytrap) • Venus fly trap has leaves that are like boxes with hinges. • They have long hair along the edges. • When an insect touches the hair, the leaf snaps shut, trapping the creature inside (Pitcher plant) • Pitcher plant, leaves are in the form of a container or pitcher with a lid to cover the mouth
  12. 12. Non Green Plants  They do not have chlorophyll  Example : Indian pipe ,coral root  Saprophytic plants : Plants that cannot make their own food and absorb food from dead plants and animals . Coral root
  13. 13. Useful Plants Plant Use Tea, Coffee plant Tea and coffee are obtained. Bamboo Plant Paper, baskets, huts, mats, furniture, walking sticks, etc. Coconut Plant Coconut oil, coconut water, fruit to eat Rubber Tree Juice of the tree is used to make rubber for tyre. Eucalyptus, Tulsi, Cinchona, Neem Used as medicines Henna Decorating hands , dye. Teak, Sal,Sheesham Furniture Acacia Juice used to make gum Cotton, Jute Make clothes,carpet,sack,rope • We depend on Plants for food.