Question

Select from the following the conditions responsible for the rapid spread of bread mould on a slice of bread : (i) Formation of large number of spores (ii) Presence of moisture and nutrients in bread (iii) Low temperature (iv) Presence of hyphae

What are spores ? On which structures are they formed ? How do they overcome unfavourable conditions ? Name the organism which multiplies with the help of these structures.

Give two reasons why some plants are grown by the method of vegetative propagation. List two methods used to grow plants vegetatively.

Study the diagram given below and name the parts marked as A, B and C. What happens when B reaches C in the ovary ? Mention its significance.