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ans4)Self-pollination occurs when the pollen from the anther is deposited on the stigma of the same flower, or another flower on the same plant. Cross-pollination is the transfer of pollen from the anther of one flower to the stigma of another flower on a different individual of the same species.
ans5)Pitcher plant has a dual mode of nutrition. It performs photosynthesis, as it has chlorophyll using carbon dioxide, water and sunlight and prepares carbohydrates.
ans6)Give one situation where a virtual image is formed? Answer: A virtual image is formed when reflected rays appear to meet. Such images cannot be obtained on screen. Plane mirrors, convex mirror and concave lens always forms virtual image.
ans7)Clayey soil is rich in humus and very fertile, so it is suitable for growing cereals like wheat and gram. Such soil is good at retaining water.Snap beans, Broccoli, Cabbage are the crops that grown in both clayey and loamy soil.
ans8)The anaerobic respiration takes place in organisms like yeast, some bacteria, and parasitic worms. The animals and plants that can survive and obtain energy even in the absence of oxygen are called Anaerobic. As yeast begins to metabolize sugars in bread dough, the carbon dioxide gas is trapped within the gluten strands, creating bubbles and causing a leavening action.
ans9)Basis of difference Uniform Motion Non-Uniform Motion
Rectilinear motion Acceleration is zero Acceleration is non-zero
Distance-time graph Here distance-time graph shows straight line Here distance-time graph shows curved line
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