Consider the following statements about the skeletal system: 1. Bones store calcium and phosphorus. 2. Red bone marrow produces blood cells. 3. Ligaments connect muscle to bone. Which of the above is/are correct? MCQ with Answer and Explanation
Consider the following statements about the skeletal system:
1. Bones store calcium and phosphorus.
2. Red bone marrow produces blood cells.
3. Ligaments connect muscle to bone.
Which of the above is/are correct?
A. 1 and 3 only
B. 2 and 3 only
C. 1 and 2 only
D. 1, 2, and 3
Answer: Option C
Solution (By JKSSB Mock Tests)
Bones store minerals (1) and contain marrow for hematopoiesis (2). Ligaments connect bone to bone; tendons connect muscle to bone. So 3 is incorrect.
Consider statements about animal husbandry: 1. Apiculture is the rearing of honeybees. 2. Sericulture is the rearing of silkworms. 3. Pisciculture is the rearing of poultry. Which are correct?
Explanation:
Apiculture is the maintenance of honeybee hives for honey and wax production. Sericulture involves rearing silkworms (Bombyx mori) for silk production. Pisciculture is the breeding and rearing of fish (fish farming), whereas poultry farming is the rearing of birds like chickens for meat and eggs. Therefore, statements 1 and 2 are correct, while 3 is false.
Consider statements about ecology: 1. A food web consists of interconnected food chains. 2. Decomposers recycle nutrients. 3. Biomass decreases at higher trophic levels. Which are correct?
Explanation:
A food web is a complex network of interconnected food chains showing multiple feeding relationships in an ecosystem. Decomposers (bacteria and fungi) break down dead organic matter, returning essential nutrients to the soil for producers. Due to energy loss at each transfer (10% law), the total biomass generally decreases at higher trophic levels, forming an upright pyramid. All statements are correct.
Explanation:
Chaperone proteins like BiP assist in proper protein folding in the rough ER. Misfolded proteins are degraded. Golgi modifies, lysosome digests.
No comments yet. Be the first to start the discussion!