The vitamin that is required for the synthesis of rhodopsin is: MCQ with Answer and Explanation

Explanation:
According to Lindeman's 10% law, only about 10% of the energy from one trophic level is transferred to the next; the rest is lost as heat through respiration. Producers (Trophic Level 1) have 10,000 kcal. Primary consumers (Level 2) get 10% of 10,000 = 1,000 kcal. Secondary consumers (Level 3) get 10% of 1,000 = 100 kcal. Tertiary consumers (Level 4) get 10% of 100 = 10 kcal.

Explanation:
The ozone layer in the stratosphere protects Earth from harmful ultraviolet (UV) radiation. Its depletion is primarily caused by Chlorofluorocarbons (CFCs), which were widely used in refrigerants, aerosols, and solvents. UV radiation breaks down CFCs, releasing chlorine atoms that catalytically destroy ozone molecules. The Montreal Protocol (1987) was an international treaty to phase out the production of CFCs.

Explanation:
Spermiogenesis is the final stage of spermatogenesis, where the spherical, non-motile spermatids undergo a complex morphological transformation to become highly specialized, motile spermatozoa (sperm). This involves the formation of the acrosome, condensation of the nucleus, development of the flagellum (tail), and the shedding of excess cytoplasm. Spermiation is the subsequent release of these mature sperm into the tubule lumen.