Which of the following is an accessory digestive gland?
A. Pancreas
B. Esophagus
C. Stomach
D. Small intestine
Answer: Option A
Solution (By JKExamLibrary)
The pancreas, liver, and salivary glands are accessory digestive glands that secrete enzymes or substances aiding digestion into the alimentary canal. The pancreas produces pancreatic juice (enzymes and bicarbonate) released into the duodenum. The stomach and small intestine are part of the main digestive tract, and the esophagus is a conduit for food.
Explanation:
Abscisic acid (ABA) is a stress hormone that induces stomatal closure by causing efflux of K⁺ ions from guard cells, leading to loss of turgor, thereby reducing water loss during drought. Auxin and cytokinin promote growth, gibberellin stimulates stem elongation and seed germination. ABA also promotes seed dormancy and leaf senescence.
Explanation:
Electroporation creates transient pores in the cell membrane using an electric field, allowing DNA to enter. Microinjection uses a fine needle, biolistics a gene gun, lipofection lipid vesicles.
Explanation:
Vitamin C is a cofactor for enzymes that hydroxylate proline and lysine in procollagen, essential for proper collagen triple helix formation. Deficiency results in weak collagen and scurvy. Vitamin A is for vision, D for calcium, K for clotting.
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