Question

Refer the given figure of different types of fungal spores (A, B, C, D and E).

(a) Identify the type of spore represented by A, B, C, D, and E. 

(b) (i) Which of the above spores are motile spores? Give two examples of fungi in which they occur.  

(ii) Which spore is formed exogenously? Identify the Class of Fungi of which they are characteristic. 

 (iii) Give examples of fungi in which spore C is found. 

 (iv) Which spore is characteristic of Class Ascomycetes?

Answer 1

(a) 

A – Zoospores

 B – Sporangiospores 

 C – Chlamydospores 

 D – Ascospores E – Basidiospores

(b) 

(i) Zoospores (A) are motile spores that occur is some Phycomycetes, e.g. Phytophthora and Albugo. They bear 1-2 flagella anteriorly, posteriorly or laterally. 

(ii) Basidiospores (E) are nonmotile meiospores which are formed exogenously on short outgrowth of clubshaped structure called basidium.leaves show circinate ptyxis. younger parts of their stem, leaves and petiole possess hairs called fronds ramenta.

(iii) Spore C(Chlamydospore) is found in Rhizopus and Mucor. 

(iv) Spore D(Ascospore) is characteristic of Class Ascomycetes.