The part of the seed that emerges first during germination and develops into the root is the:
A. Hypocotyl
B. Plumule
C. Radicle
D. Cotyledon
Answer: Option C
Solution (By JKSSB Mock Tests)
The radicle is the embryonic root, and it is the first structure to emerge from the seed coat during germination, growing downward to anchor the plant and absorb water. The plumule becomes the shoot, hypocotyl connects radicle to cotyledons, cotyledons are seed leaves.
Consider statements about animal husbandry: 1. Dairy farming focuses on milk production. 2. Poultry farming focuses on meat and egg production. 3. Fisheries focus on silk production. Which are correct?
Explanation:
Dairy farming is the agricultural practice of breeding and raising livestock (like cows and buffaloes) specifically for the long-term production of milk. Poultry farming involves the rearing of domesticated birds (like chickens, ducks, and turkeys) for the production of meat (broilers) and eggs (layers). Fisheries (pisciculture) involves the breeding and rearing of fish and other aquatic organisms for food; silk production is the domain of sericulture (rearing silkworms). Thus, statements 1 and 2 are correct.
Explanation:
Blood group A has A antigens and anti-B antibodies. Group O has no antigens, AB is universal recipient, Rh incompatibility can cause erythroblastosis fetalis.
Explanation:
Zinc is required for the synthesis, storage (as hexamers), and secretion of insulin in pancreatic beta cells. It also acts as a cofactor for numerous enzymes like carbonic anhydrase and DNA polymerases. Calcium is for bones/signaling, magnesium for ATP and chlorophyll, sodium for nerve impulses.
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