Question

In a growing population of a country,
(1) reproductive and pre-reproductive individuals are equal in number.
(2) reproductive individuals are less than the post-reproductive individuals.
(3) pre-reproductive individuals are more than the reproductive individuals.
(4) pre-reproductive individuals are less than the reproductive individuals.

Answer 1

option number 4 is the right answer

Answer 2

In the reproductive process, a male sperm and a female egg provide the information required to produce another human being. Conception occurs when these cells join as the egg is fertilized. Pregnancy begins once the fertilized egg implants in the uterus.

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. ... Some cells reproduce by unequal division of the cells, this is called budding.

The stages of fertilization can be divided into four processes:

1. sperm preparation,
2. sperm-egg recognition and binding,
3. sperm-egg fusion and
4. fusion of sperm and egg pronuclei and activation of the zygote.

It helps maintain positive genetic variation in a population. When out-competing rivals and attracting partners in the struggle to reproduce, an individual has to be good at most things, so sexual selection provides an important and effective filter to maintain and improve population genetic health.

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