Consider statements about animal husbandry: 1. Poultry provides eggs and meat. 2. Apiculture increases crop yield. 3. Dairy farming focuses on fish production. Which are correct? MCQ with Answer and Explanation
Consider statements about animal husbandry: 1. Poultry provides eggs and meat. 2. Apiculture increases crop yield. 3. Dairy farming focuses on fish production. Which are correct?
A. 1 and 2 only
B. 1, 2 and 3
C. 1 and 3 only
D. 2 and 3 only
Answer: Option A
Solution (By JKExamLibrary)
Poultry farming involves rearing birds like chickens for the production of eggs (layers) and meat (broilers). Apiculture (beekeeping) not only produces honey but also significantly increases crop yields through enhanced pollination by bees. Dairy farming focuses on the breeding and rearing of cattle, buffaloes, etc., for milk production, not fish (which is pisciculture). Thus, statements 1 and 2 are correct.
Explanation:
Phagocytosis ('cell eating') is a type of endocytosis where the cell membrane extends pseudopodia around a solid particle (e.g., bacterium) and engulfs it into a phagosome, which later fuses with a lysosome for digestion. Pinocytosis is 'cell drinking' of fluids. Exocytosis is secretion. Osmosis is water movement across a membrane.
Explanation:
Joseph Priestley discovered oxygen, Lavoisier named it and explained combustion and respiration, Ingenhousz showed plants produce oxygen in light. Together, their work elucidated the oxygen cycle. So all contributed.
Explanation:
Alveoli are tiny air sacs surrounded by capillaries where gas exchange (O₂ and CO₂) occurs. Nephrons are kidney units, neurons nerve cells, villi intestinal projections. The lungs contain millions of alveoli to maximize surface area.
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