Mention the significance of location of testis.

Mention the significance of photosynthesis.

What is the significance of melanin ?

Mention the significances of C_4 cycle.

What is the significance of yeast?

Mention the significance of age distribution.

Mention the most significant function of bundle sheath.

List out the significance of RQ.

List out the significance of ploidy.

Each bee hive consists of hexaginal cells.Name the material in which the cell is formed and mention the significance of the hexagonal cells.

What is the significance of bark ?