Question

Answer the following
1. Explain the different types of reproduction in animals.
2. Define metamorphosis and explain two types of metamorphosis with examples.
3. Describe the structure of egg with the help of a diagram.
4. How is a tadpole different from an adult?
5. How do mammals take care of their young ones?
1B. Supriya bought few eggs from a poultry farm and kept them in the shelf. She thought baby chicks will come out of the eggs. Do you think chicks will emerge out of the eggs? Why?
2B. Make a list of at least three general characteristics of mammals.
3B. Rahul says young ones of all animals look like their parents. Do you agree? Why / why not?
4B. A dolphin lives in water but does not have gills like other fish. Still it survives in water. How?

Answer 1

Answer:

At the Indian National Congress Karachi session in 1931, Congress passed resolution dissociating itself and disapproving the policy of political violence in any form. The resolution was drafted by Mahatma Gandhi which admired the bravery and sacrifice of the 3 Martyrs- Bhagat Singh, Sukhdev, and Rajguru.

Answer 2

1. (i) Sexual reproduction, and (ii) Asexual reproduction.
2. egg, larva, pupa, and adult.
3. yolk is well-centered in
4. While tadpoles lack limbs and possess long tails, adult frogs on the other hand have two hind limbs and two fore limbs. The hind limbs are exceptionally powerful and this, together with their webbed feet helps them to jump great distances and swim.
5. They clean them by getting rid of the amniotic fluid.
6. No baby will not come out.Explanation: Because a egg needs to be warmed by a hen, spread that the egg will get proper amount of every thing.
7. They are the most dominant animal form found in almost all habitat types.
8. read the life cycle of frog and butterfly.
9. Whales and dolphins are mammals and breathe air into their lungs, just like we do. They cannot breathe underwater like fish can as they do not have gills. ... After each breath, the blowhole is sealed tightly by strong muscles that surround it, so that water cannot get into the whale or dolphin's lungs.