General Science - Single MCQs (Page 53)

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Q521. Myrmecology is study of?...Q522. Which angiosperm is vessel less?...Q523. How many neck canal cells are found in the archegonium of a fern?...Q524. The lifespan of Red Blood Cells is ?...Q525. Sandstone and limestone are examples of?...Q526. In a very low temperature which from the following will freeze at last?...Q527. It is very serious disease of brain which is caused by fungi?...Q528. Malarial parasite is injected into man as?...Q529. Deficiency of Vitamin-D results in ?...Q530. The principal constituent of the atmosphere of the Earth is?...