The branch of biology dealing with the study of algae is called: MCQ with Answer and Explanation

Explanation:
The cerebrum is the largest part of the brain, responsible for higher functions like voluntary motor actions, sensory processing, and intelligence. The cerebellum coordinates muscle movements and maintains posture and balance. The medulla oblongata contains vital centers controlling involuntary functions like heartbeat, breathing, and blood pressure. All three statements are correct.

Explanation:
Dengue is a viral disease caused by the Dengue virus, not a protozoan (malaria is caused by a protozoan). Filariasis (elephantiasis) is caused by parasitic nematode worms like Wuchereria bancrofti, which block lymphatic vessels. Pneumonia is an infection that inflames the air sacs in one or both lungs, affecting the respiratory system. Thus, statements 2 and 3 are correct.

Explanation:
Robert Brown, a Scottish botanist, first described the nucleus in 1831 while studying epidermal cells of orchids. Hooke discovered cells, Leeuwenhoek observed living cells, Virchow proposed that cells arise from pre-existing cells. Brown's discovery was pivotal for understanding cellular organization.