Why are the testes located outside the abdominal cavity in the scrotum in human males?

In which of the following organisms does reproduction occur through binary fission where the plane of division is not fixed?

Which hormone is primarily responsible for the development of secondary sexual characteristics in human males?

Some organisms like Planaria can be cut into several pieces, and each piece grows into a complete organism. This ability is known as:

After fertilization in a flower, which parts develop into the seed and the fruit respectively?

Which of the following contraceptive methods also provides protection from sexually transmitted diseases (STDs)?

The bread mould, Rhizopus, reproduces asexually by forming thick-walled structures that can survive unfavorable conditions. These structures are called:

What is the primary function of the pollen tube in flowering plants?

In the menstrual cycle, what happens to the lining of the uterus if fertilization of the egg does not occur?

A small outgrowth arises from the parent body and eventually detaches to become a new individual. This mode of asexual reproduction, common in Hydra, is known as:

Which of the following pairs of diseases are caused by bacteria and can be sexually transmitted?

The transfer of pollen grains from the anther to the stigma of the same flower or another flower on the same plant is called:

In the human female reproductive system, where does the fusion of a sperm and an egg (fertilization) typically occur?

In a flower, which part contains the ovules that develop into seeds after fertilization?

Spirogyra, an alga, reproduces asexually by breaking up into smaller pieces, each of which grows into a new individual. This process is called:

The transfer of pollen from the anther of one flower to the stigma of another flower on a different plant of the same species is called:

Which of the following is a secondary sexual characteristic that appears in human males during puberty?

The ability of a cut part of an organism like Planaria to develop into a whole new individual is known as:

In which of the following organisms does reproduction occur through binary fission in a definite orientation?

Which of the following is a surgical method of contraception in human females that prevents the egg from reaching the uterus?

The pistil or carpel is the female reproductive part of a flower. Which of the following correctly lists its components from top to bottom?