Question

Ullu une by the parents.
Answer the following questions.
1. What is reproduction?
2. List any two ways by which animals reproduce.
3. Describe the stages in the life of a butterfly.
4. Explain the part of an egg with the help of a diagram.
5. Explain the life cycle of frog with the help of a diagram.
6. Write a short note on parental care shown by some animals.​

Answer 1

Answer:

1. the production of offspring by a sexual or asexual process.

2. methods of reproduction among animals, produce offspring that are clones or genetically unique.

3. The butterfly and moth develop through a process called metamorphosis. There are four stages in the metamorphosis of butterflies and moths: egg, larva, pupa, and adult. ..

4. 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.

5 . There are four stages in a frog's life.

1) First the female frog lays eggs.

2)The eggs hatch in one to three weeks. Tadpole hatches from eggs, they live in water and breathe through gills. ... 3)Tadpole grows into froglet.

Explanation:

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Answer 2

Answer:

1. Reproduction is the biological process by which new individual organisms – "offspring" – are produced from their "parents". Reproduction is a fundamental feature of all known life; each individual organism exists as the result of reproduction. There are two forms of reproduction: asexual and sexual
2. Asexual and sexual reproduction, two methods of reproduction among animals, produce offspring that are clones or genetically unique.
3. The butterfly and moth develop through a process called metamorphosis. There are four stages in the metamorphosis of butterflies and moths: egg, larva, pupa, and adult
4. 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.
5. There are four stages in a frog's life.1) First the female frog lays eggs. 2)The eggs hatch in one to three weeks. Tadpole hatches from eggs, they live in water and breathe through gills. ... 3)Tadpole grows into froglet
6. Parental care may refer to any behaviour that contributes to offspring survival. Forms of care may include the preparing of a physical rearing environment, the provisioning of offspring or the defending of offspring from predators. Species such as ectothermic vertebrates may produce self-sufficient young, and thus no parental care is required. Conversely in other animal groups, offspring may be underdeveloped and lacking independence at birth, thereby relying on parents for nutrition and the teaching of basic survival skills. Parental care may be beneficial if offspring survival, quality or reproductive success is improved, as this ultimately increases the parent's inclusive fitness.

Explanation:

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