The site of fertilization in the human female reproductive tract is usually the: MCQ with Answer and Explanation

Explanation:
Apical dominance is the phenomenon where the main central stem (apical bud) grows more strongly than the side stems (lateral buds). This is primarily controlled by auxin (specifically IAA), which is produced at the shoot apex and moves downwards, inhibiting the growth of lateral buds. Removal of the apical bud promotes lateral branching.

Explanation:
Vasoactive Intestinal Peptide (VIP) is a 28-amino acid neuropeptide that acts as a neurotransmitter and a hormone. In the gastrointestinal tract, its primary functions are stimulatory and relaxant: it stimulates the secretion of water and electrolytes into the intestinal lumen (acting as a secretagogue), relaxes the smooth muscle of the gut (including the lower esophageal sphincter, stomach, and gall bladder), and stimulates the pancreas to secrete a bicarbonate-rich juice. It also causes vasodilation in the gut. Excessive VIP secretion can lead to severe watery diarrhea (as in VIPoma).

Explanation:
Spirogyra is a filamentous green alga containing chloroplasts, performing photosynthesis, hence autotrophic. Mushroom, Mucor, and Rhizopus are fungi, which are heterotrophic saprophytes or parasites. Autotrophs synthesize their own food using light or chemical energy. Spirogyra belongs to algae, classified under Plantae in five-kingdom classification. Its ribbon-shaped chloroplast aids in photosynthesis. This question tests the concept of nutrition modes.