The tissue that forms the outer protective covering of the plant body is: MCQ with Answer and Explanation

Explanation:
A mature embryo sac (female gametophyte) in angiosperms is 7-celled but 8-nucleate: 3 antipodal cells (3 nuclei), 2 synergids (2 nuclei), 1 egg cell (1 nucleus), and 1 central cell with 2 polar nuclei. Thus total 8 haploid nuclei. The central cell is homodiploid (2 polar nuclei). Double fertilization involves these nuclei. This is typical of Polygonum type of development.

Explanation:
Vitamin A (retinal) combines with opsin to form rhodopsin in rod cells, necessary for vision in dim light. Deficiency causes night blindness. B₁ is for carbohydrate metabolism, C for collagen, D for calcium.

Explanation:
Vitamins A, D, E, and K are fat-soluble vitamins, meaning they are absorbed along with fats in the diet and can be stored in the body's fatty tissue and liver. Vitamin C and the B-complex vitamins are water-soluble, meaning they dissolve in water and are not stored in significant amounts. Vitamin D deficiency causes rickets in children and osteomalacia in adults; scurvy is caused by Vitamin C deficiency. Thus, statements 1 and 2 are correct.