Human Reproduction

Q.

The number of chromosomes in parents and offsprings of a particular species remains constant due to:

1. Doubling of chromosomes after zygote formation

2. Halving of chromosomes during gamete formation

3. Doubling of chromosomes after gamete formation

4. Halving of chromosomes after gamete formation

Q.

What is implantation?

Q.

The number of chromosomes in parents and offspring of a particular species remains constant due to-

1. Doubling of chromosomes after zygote formation.

2. Halving of chromosomes during gamete formation.

3. Doubling of chromosomes after gamete formation

4. Halving of chromosomes after gamete formation.

Q.

In human beings, males attain puberty a little later than females.

1. True

2. False

Q.

How does the developing embryo get nourishment inside the mothers body?

Q.
(unisexual, fertilisation, fruit, stamen, anther, bisexual, pollination, seed, ovary)
A flower that bears both the male and the female parts is known as ......... flower.

Q. What is gestation period? What is the duration of gastation in humans?