The hormone that triggers the release of cortisol from the adrenal cortex is:
A. GH
B. TSH
C. FSH
D. ACTH
Answer: Option D
Solution (By JKSSB Mock Tests)
Adrenocorticotropic hormone (ACTH), secreted by the anterior pituitary, stimulates the adrenal cortex to produce and release cortisol. TSH stimulates thyroid, FSH gonads, GH growth.
Explanation:
Vaccination involves the introduction of a weakened, killed, or partial pathogen (antigen) into the body. This stimulates the immune system to produce its own antibodies and memory cells without causing the disease. Since the body actively produces the immune response due to an artificial stimulus, it is called artificial active immunity.
Explanation:
Phycoerythrin is a red phycobiliprotein that masks chlorophyll in red algae (Rhodophyta). Phycocyanin is blue in cyanobacteria, fucoxanthin brown in brown algae. These accessory pigments allow light absorption at depths.
Explanation:
Root hairs, unicellular extensions of epidermal cells in the root maturation zone, greatly increase surface area for water and mineral absorption from the soil. Water enters by osmosis. Leaves absorb some water through stomata but primarily lose water. The stem transports, and flowers are reproductive.
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