question_answer 37)

  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 hyphae (iv) formation of round shaped sporangia (a) (i) and (iii)                     (b) (ii) and (iv)                   (c) (i) and (ii)                                      (d) (ill) and (iv)

Answer:

                  (c) Under favourable conditions (like damp and warm conditions, nutrients), the air-borne spores land on food, germinate and produce new plants, these spores spread in to air when spore case of plant containing hundreds of spores bursts.