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Answer 1

ANSWERS & EXPLANATION:

Q.1- What are viviparous and oviparous animals?

Ans.

• Animals such as human beings, cows and dogs which give birth to young ones are called viviparous animals.
• Animals such as hen, frog, lizard and butterfly which lay eggs are called oviparous animals.

Q.2- Whai is metamorphosis?

Ans. Metamorphosis is a biological process by which an animal physically develops after birth or hatching, involving a conspicuous and relatively abrupt change in the animal's body structure through cell growth and differentiation.

Q.3- Differentiate between internal fertilisation and external fertilisation.

Ans. -: Internal Fertilisation :-

Internal fertilization is the process when the syngamy (union of male and female gamete) occurs inside the female body after insemination using copulation.

-: External Fertilisation :-

External fertilization is the syngamy outside the female body, that is in the outer environment especially in water bodies.

Q.4- Explain the importance of reproduction organism.

Ans.

• Reproduction maintains a balance between the birth rate and death rate.
• Reproduction maintains a balance between the birth rate and death rate. The new individuals replace the old and the dying population.
• Reproduction maintains a balance between the birth rate and death rate. The new individuals replace the old and the dying population. It also helps in increasing the number of species in the ecosystem.

Q.5- What is an Adam's apple?

Ans. When the larynx grows larger during puberty, it sticks out at the front of the throat. This is what's called an Adam's apple.

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