A network of interconnected food chains is called a: MCQ with Answer and Explanation

Explanation:
Biotin (vitamin B₇) is a coenzyme for carboxylases, e.g., pyruvate carboxylase, acetyl-CoA carboxylase. It is involved in gluconeogenesis and fatty acid synthesis. Deficiency is rare but can occur with raw egg white consumption.

Explanation:
Anemia is a deficiency in RBCs or hemoglobin, reducing oxygen-carrying capacity. Causes: iron deficiency, vitamin B₁₂/folate deficiency, blood loss, hemolysis. Polycythemia is excess RBCs, leukemia is cancer of WBCs, thalassemia is a genetic hemoglobin disorder leading to anemia. Anemia causes fatigue and pallor.

Explanation:
Azadirachta indica is the scientific name of neem, known for its medicinal and insecticidal properties. Ocimum sanctum is holy basil (tulsi), Ficus religiosa is the peepal tree, and Mangifera indica is mango. Neem belongs to the family Meliaceae. Its leaves, seeds, and oil are used in various traditional remedies and biopesticides.