The natural place of an organism where it lives and reproduces is called its:
A. Ecosystem
B. Niche
C. Biome
D. Habitat
Answer: Option D
Solution (By JKSSB Mock Tests)
Habitat refers to the physical environment where an organism lives (address), whereas niche refers to its functional role in the ecosystem (profession), including interactions and resource use. Ecosystem is the community plus abiotic factors, biome is a large ecological area with similar climate and vegetation. A pond habitat can have various niches.
Explanation:
Pulmonary ventilation is the mechanical process of moving air in (inspiration) and out (expiration), which is breathing. R correctly defines it.
Explanation:
Emasculation is the removal of stamens (anthers) from a bisexual flower before anthesis to prevent self-fertilization in artificial hybridization experiments. Bagging covers the flower to prevent contamination, tagging labels the cross. Emasculation ensures that only desired pollen is used.
Explanation:
The Calvin cycle fixes CO₂ into glucose, which is the primary organic product of photosynthesis. Oxygen is a byproduct of water splitting.
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