The deficiency of vitamin D in children causes: MCQ with Answer and Explanation

Explanation:
Fertilization occurs within the ovule, where the pollen tube delivers two sperm cells. One fuses with the egg to form the zygote, the other with polar nuclei to form endosperm. The stigma receives pollen, style is the path, ovary contains ovules.

Explanation:
Chaperone proteins like BiP assist in proper protein folding in the rough ER. Misfolded proteins are degraded. Golgi modifies, lysosome digests.

Explanation:
Photosynthesis, the process of converting light energy into chemical energy (glucose), occurs in the chloroplasts of plant cells, specifically involving the thylakoid membranes and stroma. Cellular respiration, the process of breaking down glucose to release ATP for cellular work, occurs primarily in the mitochondria of both plant and animal cells. Transpiration is the loss of water vapor from the aerial parts of the plant, primarily through the stomata on the leaves, not through the roots (which absorb water). Thus, statements 1 and 2 are correct.