Factors responsible for the rapid spread of bread mould on slices of bread are:

(i) large number of spores

(ii) availability of moisture and nutrients in bread

(iii) presence of tubular branched hypae

(iv) formation of round shaped sporangia

In Rhizopus, tubular thread-like structures bearing sporangia at their tips are called:

Vegetative propagation refers to formation of new plants from:

Length of pollen tube depends on the distance between:

Which of the following statements are true for flowers?

(i) Flowers are always bisexual

(ii) They are the sexual reproductive organs

(iii) They are produced in all groups of plants

(iv) After fertilization they give rise to fruits