Assertion (A) is correct: Fish bodies contain numerous inorganic elements, broadly categorized into macro (major) and micro (trace) elements, essential for various physiological functions. Reason (R) accurately lists the critical roles these inorganic elements play in fish physiology, including metabolism, structural integrity (bone formation), cellular processes, and overall growth and reproduction. These essential functions directly explain why these inorganic elements are recognized as important components of the fish body.
This statement is correct. Earthworms play a crucial role in soil aeration, drainage, and nutrient cycling through their burrowing and waste-excreting activities, thus improving soil fertility. They are often referred to as "farmers' friends" due to their beneficial impact on agriculture. 2. This statement is incorrect. An earthworm has not two pairs, but rather four pairs of seminal vesicles, and it possesses five pairs of aortic arches, which are often colloquially referred to as "hearts". So, it has five "hearts" (aortic arches) rather than two pairs. 12. For the below Assertion and Reason, choose the correct alternative : Assertion (A) : Commonly, there are 20 recognized macro and micro inorganic elements in fish body. Reason (R) : Essential functions of inorganic elements are metabolism, bone formation, blood clotting, muscle function, impulse transmission, energy transformation, permeability of cellular membrane, genetic coding & control of reproduction and growth. - Question not attempted
Asked in Asst. Fisheries Development Officer 2024 · Topic: Plant Nutrition (Essential Mineral Elements: Criteria for essentiality and classification)
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Answer: A. Both (A) and (R) are individually true and (R) is correct explanation of (A).
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