Available Answers

1. 1.

   Read the clues and write the names of the baby animals in the crossword.

    
   Across
   2. baby of a hen
   3. baby of a pig

   Down
   1. baby of a cat
   2. baby of a cow
   3. baby of a dog

2. 2.

   Fill in the blanks with the correct option.

   1. __________ (Incubation/ Hatching) keeps the egg warm, so that the baby inside the egg can develop easily.
   2. The white, thick, jelly-like substance within the egg shell is called __________ (yolk/ albumen).
   3. The floating cluster of frog eggs is known as __________ (nymph/ frogspawn).
   4. In order to become an adult frog, tadpole undergoes several changes through  process known as __________ (metamorphosis/ hatching).
   5. Insects like butterfly undergoes __________ (three/ four) stages of development in their life cycle.
3. 3.

   State true or false.

   1. Snakes make a hole in the ground and lay their eggs in it.
   2. Animals that give birth to young ones and feed their own milk to their babies are known as reptiles.
   3. Kangaroos keep their babies in the den.
   4. Koala bear is an example of marsupial.
   5. Bats, elephants and horses are examples of mammals.
4. 4.

   Search and name the following.

   1. Viviparous animals are also called __________.
   2. Larval form of a housefly is __________.
   3. Wriggler is larval form of a __________.
   4. Egg-laying animals are also known as __________.
5. 5.

   Tick(√) the correct answer.

   1. All living organisms __________ for the continuity of life.
      1. reproduce
      2. eat
      3. breathe
      4. none of these
   2. The process of parent sitting on the egg to keep it warm, is known as
      1. reproduction
      2. metamorphosis
      3. hatching
      4. incubation
   3. The baby insect that comes out of the egg is known as 
      1. pupa
      2. larva
      3. nymph
      4. chick
   4. A dolphin has __________ at the top of its head to breathe.
      1. lungs
      2. gills
      3. both a and b
      4. blowhole
6. 6.

   State true or false.

   1. Albumen is the yellow portion of an egg.
   2. Frog is a mammal.
   3. Tadpole undergoes metamorphosis to become an adult frog.
   4. A caterpillar makes protective covering around itself, known as pupa.
   5. Mammals do not feed milk to their babies.