The offsprings formed as a result of sexual reproduction exhibit more variations because
The factors responsible for the rapid spreading of bread mould on slices of bread are:
(i) Presence of large number of spores in air
(ii) Presence of large number of thread-like branches hyphae
(iii) Presence of moisture and nutrients
(iv) Formation of round shaped sporangia
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In spirogyra asexual reproduction takes place by
The number of chromosomes in parents and offsprings of a particular species remains constant due to
In the figure given alongside, the parts marked A, B and C are sequentially
In human males, the testes lie in the scrotum outside the body because it helps in the
In a flower, the parts that produce male and female gametes are respectively:
In which one of the following birth control methods, a small portion of oviducts of a woman is removed by surgical operation and the cut ends are ligated?
Vegetative propagation refers to the formation of new plants from the following existing organs of the old plants
The protozoan having a flagellum at its one end is