Question
Which of the following is/are true with respect to
Amoeba? I. It is a multi-cellular organism. II. It takes in food using temporary finger-like extensions called Pseudopodia. III. It forms a food vacuole around the food particle.Solution
I is incorrect as the Amoeba is a uni-cellular organism. Both II and III are correct. Amoeba takes in food using temporary finger-like extensions of the cell surface which fuse over the food particle forming a food-vacuole. Inside the food vacuole, complex substances are broken down into simpler ones which then diffuse into the cytoplasm. Hence, option B is correct.
A pond of water appears less deep due to –
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When white light passes through a glass prism, which color deviates the least?
The weight (W) of a body is derived from which formula?
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In an experimental arrangement of a Fresnel's biprism, monochromatic light of wavelength 2. is used to produce interference fringe pattern. On introduc...
Parsec is the unit of
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(i) Electric motor - (a) Heat energy into mechanical energy
(ii) Steam engin...
What happens to the electrostatic force between two charges when the distance between them decreases?
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