In the human body, the 'Thymus gland' is most active during childhood and plays a crucial role in the maturation of: MCQ with Answer and Explanation

Explanation:
Lymphatic filariasis, commonly known as elephantiasis, is a parasitic disease caused by nematode worms, primarily Wuchereria bancrofti. The infective larvae (microfilariae) are transmitted to humans through the bite of an infected female Culex mosquito (primarily Culex pipiens fatigans). The adult worms lodge in the lymphatic vessels, causing severe inflammation, blockage, and the characteristic massive swelling (elephantiasis) of the limbs and genitals. Anopheles transmits malaria, Aedes transmits dengue.

Explanation:
During photosynthesis, water is split (photolysis), releasing oxygen as a byproduct. Respiration consumes oxygen, nitrogen fixation uses nitrogenase, transpiration releases water vapor.

Explanation:
Malaria is a life-threatening mosquito-borne infectious disease caused by protozoan parasites of the genus Plasmodium. Four species infect humans: P. falciparum (most severe), P. vivax, P. ovale, and P. malariae. The parasite undergoes a complex life cycle in both humans (asexual phase) and the female Anopheles mosquito (sexual phase).