The disease caused by iodine deficiency is: MCQ with Answer and Explanation

Explanation:
Dairy farming is the business of breeding, raising, and managing dairy animals (like cows and buffaloes) for the production of milk and milk products. Poultry farming involves the commercial raising of domesticated birds (like chickens, ducks, and turkeys) for the production of meat and eggs. Apiculture is the scientific rearing of honeybees (Apis species) for the production of honey, beeswax, and other hive products; silkworm rearing is sericulture. Thus, statements 1 and 2 are correct.

Explanation:
Transduction is the transfer of bacterial DNA from one bacterium to another by a bacteriophage. Generalized transduction occurs when phage accidentally packages host DNA; specialized transduction involves specific genes near the prophage integration site. Conjugation needs direct contact, transformation free DNA.

Explanation:
Calvin cycle occurs in the stroma. Chloroplasts are only in plants/algae; thylakoids stack into grana; cristae are in mitochondria; 70S ribosomes are in stroma, not membrane.