Arthropod classes typified according to presence of antennae
How three main arthropod classes typified according to presence of antennae?
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Crustaceans encompass two pairs of antennae; insects encompass one pair; arachnids don’t have antennae.
Explain the phenomenon that some plants adapted to the dry environment open their stomata only during the night?
Name the living beings which carry out photosynthesis? Name the cell organelle responsible for the absorption of light for photosynthesis method in algae and plants?
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Write down the main functions of the National family welfare program?
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What is the type of digestive system of echinoderms?
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