question_answer

Observe the figure and answer the following questions:

(i) Name the micro-organism and the group to which it belongs.

(ii) Name the food items on which the organism grows.

(iii) Does it grow well in dry or in moist conditions?

(iv) Is it safe to eat infected bread?

Answer:

The small colored bodies in the cytoplasm are called plastids. These are found only in plant cells but not in animal cells. Plastids are of different colours. Some of them contain green pigment called chlorophyll. The plastids having other than green colour are called chromoplast. Some plastids are colour less called leucoplast. These coloured plastids provide various colours to flowers and fruits. The chloroplasts having chlorophyll help in the formation of food by leaves through the process called photosynthesis.

(i) Micro-organism is bread mould (Rhizopus) and the group is Fungi.

(ii) Organism grows on moist and stale bread.

(iii) It grows well in moist conditions.

(iv) No, the fungus spoils the bread by producing poisonous substances (toxins).