Which hormone is produced by the anterior pituitary to stimulate growth of bones and muscles? MCQ with Answer and Explanation

Which hormone is produced by the anterior pituitary to stimulate growth of bones and muscles?
A. Thyroxine
B. Cortisol
C. Growth hormone
D. Adrenaline
Answer: Option C
Solution (By JKSSB Mock Tests)
Growth hormone (somatotropin) stimulates protein synthesis, cell division, and growth of bones and muscles, especially during childhood. Thyroxine regulates metabolism, cortisol is a stress hormone from the adrenal cortex, adrenaline is from the adrenal medulla. GH deficiency leads to dwarfism; excess causes gigantism or acromegaly.

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Question #1
Consider statements about human immunity: 1. Active immunity involves the body producing its own antibodies. 2. Passive immunity involves receiving pre-formed antibodies. 3. Vaccination provides passive immunity. Which are correct?
A. 1 and 3 only
B. 1, 2 and 3
C. 2 and 3 only
D. 1 and 2 only

Correct Answer: Option D


Explanation:
Active immunity occurs when the body's own immune system is stimulated by an antigen (either through infection or vaccination) to produce its own antibodies and memory cells, providing long-lasting protection. Passive immunity occurs when an individual is directly given pre-formed antibodies (like through mother's milk or antiserum), providing immediate but temporary protection. Vaccination stimulates the body to produce its own immune response, thus providing artificial active immunity, not passive. Thus, statements 1 and 2 are correct.

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Question #2
Consider statements about microorganisms: 1. Bacteria are prokaryotic organisms. 2. Fungi are eukaryotic organisms. 3. Viruses have a cellular structure. Which are correct?
A. 1 and 3 only
B. 2 and 3 only
C. 1, 2 and 3
D. 1 and 2 only

Correct Answer: Option D


Explanation:
Bacteria are unicellular prokaryotic organisms, characterized by the absence of a true nucleus and membrane-bound organelles. Fungi are eukaryotic organisms, possessing a true nucleus and membrane-bound organelles, and can be unicellular (yeasts) or multicellular (molds, mushrooms). Viruses are acellular, non-cellular entities; they consist of genetic material (DNA or RNA) enclosed in a protein coat (capsid) and lack any cellular structure or metabolic machinery. Thus, statements 1 and 2 are correct.

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Question #3
The 'Green Revolution' in India, which led to a massive increase in wheat and rice production, was primarily led by the efforts of:
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B. Both B and C
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Correct Answer: Option B


Explanation:
The Green Revolution in India was a period of significant agricultural transformation. Norman Borlaug, the 'father of the Green Revolution' globally, developed high-yielding, disease-resistant dwarf wheat varieties in Mexico. M.S. Swaminathan, known as the 'father of the Green Revolution in India', adapted these varieties to Indian conditions and led the scientific and administrative efforts to introduce these high-yielding varieties (along with improved irrigation and fertilizers) to Indian farmers, drastically increasing wheat and rice production.

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