Assertion (A): The pituitary gland is connected to the hypothalamus by a stalk. Reason (R): This connection allows the hypothalamus to control pituitary hormone secretion. MCQ with Answer and Explanation
Assertion (A): The pituitary gland is connected to the hypothalamus by a stalk.
Reason (R): This connection allows the hypothalamus to control pituitary hormone secretion.
A. A false, R true.
B. Both A and R are true, and R is the correct explanation.
C. A true, R false.
D. Both A and R are true, but R is not the correct explanation.
Answer: Option B
Solution (By JKSSB Mock Tests)
The infundibulum connects them, and hypothalamic releasing/inhibiting hormones travel to the anterior pituitary; posterior pituitary stores hypothalamic hormones. R correctly explains A.
Explanation:
The pineal gland is a small endocrine gland in the brain that secretes melatonin, a hormone that regulates circadian rhythms and sleep-wake cycles. Melatonin production is influenced by light exposure: it increases in darkness and decreases in light. The pituitary is the master gland, thyroid regulates metabolism, adrenal secretes adrenaline.
Explanation:
Transcriptomics studies the complete set of RNA transcripts (transcriptome) produced by the genome under specific conditions. It often uses microarrays or RNA-seq. Genomics is DNA, proteomics proteins, metabolomics metabolites.
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