Double fertilization in angiosperms involves the fusion of one male gamete with the egg and the other male gamete with: MCQ with Answer and Explanation

Explanation:
The infundibulum (pituitary stalk) physically connects the hypothalamus to the pituitary gland, transporting hormones and nerve signals.

Explanation:
Vitamin C, chemically ascorbic acid, is a water-soluble vitamin essential for collagen synthesis, wound healing, iron absorption, and antioxidant function. Its deficiency causes scurvy (bleeding gums, weakness). Vitamin A is retinol, B₁ is thiamine, D is calciferol. Vitamin C is abundant in citrus fruits, guava, amla. It is heat-labile and easily destroyed by cooking.

Explanation:
Nettie Stevens (1905) discovered that sex is determined by the XY chromosomes in beetles. Morgan later confirmed chromosomal theory. Mendel discovered laws of inheritance.