Chapter 8 – How do Organisms Reproduce?

Assertion: In human beings, the female. play a major role in determining the sex of the offspring.
Reason: Women have two X chromosomes.

Assertion: In male reproductive system, transport of sperm takes place in a fluid which also provide nutrition.
Reason: Protective glands and seminal vesicles secret in the vas deferens.

A pair of duct arising from testis, which carry sperms are

Many unicellular organisms reproduce by the process of

When a sperm is deposited into the vagina which route does it travel?

At the time of entering into ovule, pollen tube has

Which of this is seminal fluid?

When the foetus is growing inside the uterus it needs nutrients. Which part provides these nutrients?

The ability to reproduce is lost in a female after

Which part of the flower forms the fruit?

Anemophily is the pollination by:

Which is the most common method of reproduction in majority of fungi and bacteria?

A common feature of reproduction in Amoeba, spirogyra and yeast is that:

There is a greater possibility for the evolution of a new species in organisms which reproduce by

The period during adolescence when the reproductive tissues begin to mature is called

Anemophily is the pollination by –

In man, fertilization of ovum takes place in

The flower of the Hibiscus plant is

The seed that contains the future plant is called the

Spirogyra reproduce by

In vegetative reproduction, the new individuals are genetically –

During favourable conditions, Amoeba reproduces by

The ability of a cell to divide into several cells during reproduction in Plasmodium is called

Assertion: Amoeba reproduced by fission
Reason: All unicellular organisms reproduced by asexual method.

Assertion: Ovary releases one egg every month.
Reason: The lining of uterus is always thick and spongy.

The anther contains

In human males, the testes lie in the scrotum, because it helps in the

The fertilisation of human egg by the sperm takes place in

Which of the following is a primary sex organ in a mammal?

What marks the beginning of the reproductive life of a woman?