answer the following questions
1. what is the need of reproduction.
2. define mammals what are warm blooded animals.
3. explain the structure of an egg with the help of a diagram.
4. what are the different stages of development in birds.
5. what are the various changes which the egg of frog undergo before becoming an adult frog.
Answers
Answer:
1 ans: Reproduction is important for the survival of all living things. Without a mechanism for reproduction, life would come to an end. There are two types of reproduction to learn in elementary grades, asexual and sexual reproduction.
2 ans: An animal of the type that gives birth to live babies, not eggs, and feeds its young on milk from its own body.Warm-blooded are those animal species which can maintain a body temperature higher than their environment. In particular, homeothermic species maintain a stable body temperature by regulating metabolic processes.
3ans: A high-quality egg has only a small air cell. The yolk is well-centered in the albumen and is surrounded by the vitelline membrane, which is colorless. ... On opposite sides of the yolk are two, twisted, whitish cord-like objects known as chalazae. Their function is to support the yolk in the center of the albumen.(Sorry could not adjust the diagram)
4 ans:
HATCHLING. A bird just out of the egg. ...
NESTLING. A bird that remains in the nest until it is able to fly.
CHICK. A young bird that leaves the nest soon after hatching and typically walks or hops near its family group until it is able to fly.
FLEDGLING. ...
JUVENILE. ...
IMMATURE. ...
ADULT.
5 ans:Many frogs undergo a stage of life between egg and adult known as the tadpole stage -- it's their larval stage. During this stage, frogs change both physically and behaviorally. According to Animal Planet, the metamorphosis from egg to adult can take 10 days to two years to complete, depending on the species of frog.