Why do the desert plants take up the carbon dioxide for photosynthesis at night?
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___________ being a higher category, is the assemblage of families which exhibit a few similar characters.
When a Cuttlefish is described as a Molluscs, it is at which level of classification?
The deficiency of Niacina vitamin of B complex group causes the disease _____
Leptospirosis is a disease caused by
The body of all complex animals consist of only _______ basic types of tissue(s).
Polyploidy arises due to change in the
What is the main purpose of white blood corpuscles?