In the given diagram, positions of four endocrine glands in the human body are marked by the letters A, B, C, and O:

The correct labelling of A, B, C, and D is:

A rectangular container given below is filled with a liquid heavier than water:

Select the correct statement from the following about the liquid pressure.

Light is falling on the surface $S_1$, $S_2$, and $S_3$ as shown below:

The surfaces on which the angle of incidence is equal to the angle of reflection are:

In the diagram of human eye given below, the parts marked by A, B, C, and D should be labelled as:

Study the following statements:

I. Germination of seeds does not take place under dry conditions.
II. Nutrients get transported to each part of the plant in dissolved form.
Ill. The supply of water to crops at different intervals improves the texture of the soil.
IV. The supply of water to crop makes the soil porous due to which exchange of gases becomes easy.
V. Water protects the crops from both frost and hot air currents.

The statements which justify the need to irrigate crops are:

Study the following statements:

I. Chromosomes are located in the nucleolus.
II. Genes are located in the chromosomes.
Ill. Unicellular organisms respire and reproduce.
IV. The most important function of cell membrane is to control the entry and exit of materials from cells.

The correct statements are: