The trophic level in a food chain that contains organisms that feed on primary consumers is the:
A. Secondary consumer
B. Primary consumer
C. Producer
D. Decomposer
Answer: Option A
Solution (By JKSSB Mock Tests)
Secondary consumers are carnivores or omnivores that eat primary consumers (herbivores). Example: frog eating grasshopper. Producers are autotrophs, primary consumers are herbivores, decomposers break down dead matter. Trophic levels represent energy transfer steps. Energy decreases at each higher level.
Explanation:
Basophils, and similarly mast cells in tissues, release histamine and other inflammatory mediators during allergic and hypersensitivity reactions. Neutrophils are first responders to infection, lymphocytes are adaptive immune cells, monocytes become macrophages. Histamine causes vasodilation and bronchoconstriction.
Explanation:
Chlorophyll a is the primary photosynthetic pigment, essential for converting light energy into chemical energy. It directly participates in the light reactions. Chlorophyll b, carotenes, and xanthophylls are accessory pigments that capture additional wavelengths and transfer energy to chlorophyll a. These accessory pigments also protect chlorophyll from photo-oxidation.
Consider the following statements about the immune system:
1. Macrophages are phagocytic cells.
2. B cells produce antibodies.
3. T cells are part of innate immunity.
Which of the above is/are correct?
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