This is the correct option. 

This is the correct option as this is not a characteristic of the meristematic tissue. Cytoplasm is dense in it. Vacuoles are nearly absent.

This is the correct option as this is not a function of parenchyma.

This is the correct option. The walls of cork cells are heavily thickened with an organic substance called suberin. Suberin makes these cells impermeable to water and gases. 

Apical meristems - These are situated at the growing tip of stems and roots. Lateral meristems - These are found beneath the bark and in vascular bundles of dicot roots and stems. Intercalary meristems - These are located at the base of leaves and internodes.

This is the correct option. The cell walls of sclerenchyma are greatly thickened with lignin. Lignin is a complex polymer which acts as a cement and hardens the cell walls.

Sebaceous glands secrete sebum which causes acne and pimples in adolescents.

The protruding part of the throat seen in boys is also called larynx.

Adrenaline is a hormone produced by the adrenal glands during high stress or exciting situations. This powerful hormone is a part of the human body's acute stress response system, also called the "fight or flight" response.

Suresh's father was suffering from ‘diabetes’ because his pancreas was not producing the hormone insulin in sufficient quantities.

Changes seen in a boy during puberty are : a) Wider chest b) Broadening of shoulders

If fertilisation does not occur, the released egg and the thickened lining of the uterus along with its blood vessels are shed off. This causes bleeding in women which is called menstruation. Menstruation occurs once in about 28 to 30 days.

Hydra reproduces by budding.

Amoeba reproduces by binary fission, which is a mode of asexual reproduction.

In binary fission, first the nucleus divides into two nuclei followed by the division of the cell body into two.