[PYQ 2021-22] Identify the type of reactions occurring in step 1 and step 2. Step 1: Limestone --(Heat)--> X + CO₂. Step 2: X + H₂O --> Slaked lime.

Which of the following is a secondary sexual characteristic observed in boys but NOT in girls during puberty?

The process of DNA copying is essential for reproduction. What is the primary significance of the variations that arise during this process?

Plasmodium, the malarial parasite, divides into many daughter cells simultaneously within a cyst. This mode of asexual reproduction is called:

A student observes that a potato tuber kept in a basket has started to grow small green shoots from its 'eyes'. This is an example of:

Which of the following is a major advantage of sexual reproduction over asexual reproduction?

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?