Q. Tobacco requires length of dark period that is

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Q. During child birth, baby is delivered as a result of

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Q. External fertilization occurs in the

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Q. Method in which young one develops within female body and it receives nourishment from mother's blood is called

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Q. In honey bee, males are haploid and produce sperms by

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Q. Fruit ripening is often accompanied by a burst of respiratory activity called

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Q. Corpus luteum starts degenerating if

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Q. For cloning of an animal, nucleus is taken from a

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Q. Organisms produced from a single cell by subculturing are called

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Q. Ovum, after release, is then transferred to

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Q. Average loss of blood during child birth is

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Q. In ovoviparous animals, embryo receives its nourishment from

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Q. Evolution of pollen tube is an important step in land adaptation by

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Q. Parthenogenesis has advantage of

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Q. Parthenocarpic fruits with no seeds are

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Q. Tissue culturing can only be done for

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Q. Shell of eggs produced by birds and turtles have high concentration of

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Q. Artificial mode of reproduction in plants is

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Q. Labour pain is caused by contractions in walls of

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Q. Release of ovum from follicle or ovulation is induced by

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