Which of the following statements about animal tissues is correct? MCQ with Answer and Explanation

Explanation:
Folate (vitamin B₉) is crucial for DNA synthesis and cell division. Inadequate folate early in pregnancy can cause neural tube defects like spina bifida in the fetus. Supplementation is recommended.

Explanation:
Homologous organs are structures that have a similar fundamental anatomical plan and evolutionary origin but may perform different functions. The forelimbs of humans (for grasping), whales (for swimming), bats (for flying), and cats (for running) all have the same basic bone structure (humerus, radius, ulna, carpals, metacarpals, phalanges), indicating divergent evolution from a common ancestor.

Explanation:
The hypothalamus is a small region in the forebrain that maintains homeostasis by regulating body temperature, hunger, thirst, sleep, and emotions. It also controls pituitary gland secretions. The cerebellum coordinates movement, medulla controls respiration and heart rate, pons relays signals. Hypothalamus acts as the body's thermostat and the link between nervous and endocrine systems.