Available Answers

1. 1.

   State true or false.

   1. Water lily is an example of fixed aquatic plant.
   2. Plants growing on mountains shed most of their leaves in autumn.
   3. The number of stages in the life cycle of housefly is three.
   4. Omnivores, eat both plants and animals.
   5. The force exerted by a surface when an object slides or rolls over it is called frictional force.
   6. Evaporation, condensation and precipitation are not continuous process in nature.
   7. Mercury is the hottest planet in our solar system.
   8. Jupiter has 69 moons.
   9. We need to protect our environment for the survival of our future generations.
2. 2.

   Match the following.

   a. Neem tree	1. Aerial animal
   b. Mangroves	2. Energy obtained from sun
   c. Turtles	3. Scavenger
   d. Pigeon	4. Jupiter
   e. Hyena	5. Plant with breathing roots
   f. Solar energy	6. Parasite
   g. Hail	7. Earth
   h. Blue	8. Terrestrial plant
   i. Largest planet	9. Pellets of frozen rain
   	10. Reptile

    

3. 3.

   Colour the correct option.

   1. The features that help the plants nd animals to survive in their natural surroundings are called habitat/ adaptation.
   2. Non-green plants do not have/ have excess of chlorophyll.
   3. Hatching/ Incubation is the process in which the egg is kept warm such that the baby inside the egg can easily develop.
   4. The animals that take care of their babies in the pouches on their bodies re called marsupials/ reptiles.
   5. Animals that feed on dead and decaying organic matter are called omnivores/ scavengers.
   6. A lever/ pulley is a rod that turns around a point.
   7. Fog/ Frost is the thin layer of ice crystals that form due to very cold weather.
   8. Sun/ Moon is the natural satellite of the earth.
   9. Afforestation/ Deforestation is the process of planting large number of trees.
4. 4.

   Fill in the blanks.

   1. Tall, straight and coned shaped trees are usually found in/ on __________.
   2. Underwater plants take in oxygen through __________.
   3. Whale is an example of __________.
   4. __________ makes a hole in the ground and lays their eggs in it.
   5. The living organism that live inside the body of the host are called __________.
   6. The force applied on pulling a catapult is __________.
   7. In filtration, the unclean water is passed through __________.
   8. The water droplets formed by condensation of water vapour on very cold surface of an object is called __________.
   9. The axis at which earth is tilted to spin on its own axis is __________.
   10. World Environment Day is observed on __________.
5. 5.

   Give one word for the following.

   1. Plants that grow on  land.
   2. Plants that are carnivorous in nature.
   3. The process by which a tadpole undergoes several changes to become an adult frog.
   4. The protective cover around the caterpillar.
   5. Animals that don't have backbone.
   6. The chemical added to water to kill germs present in it.
   7. The imaginary line that divides the earth into two hemispheres.
   8. The process of cutting down large number of trees.