Question

Match the organisms given in column I with their mode of reproduction in column II and select the correct answer from the codes given below.

Column I	Column II
A. Potato	(i) Zoospores
B. Spirogyra	(ii) Stem cuttings
C. Rose	(iii) Conidiospores
D. Penicillium	(iv) Stem tubers

• A. $A-\left(i\right),B-\left(iii\right),C-\left(ii\right),D-\left(iv\right)$
• B. $A-\left(iv\right),B-\left(i\right),C-\left(ii\right),D-\left(iii\right)$
• C. $A-\left(iv\right),B-\left(i\right),C-\left(iii\right),D-\left(ii\right)$
• D. $A-\left(ii\right),B-\left(i\right),C-\left(iv\right),D-\left(iii\right)$

Answer 1

The correct option is B $A-\left(iv\right),B-\left(i\right),C-\left(ii\right),D-\left(iii\right)$

A. Tubers are modified underground stem branches having several buds. Each eye of the potato tuber is a bud which grows into a new potato plant when planted with a portion of the swollen tuber. The potato crop is raised by tubers, not by seeds.

B. Zoospores are special kind of motile and flagellated spores produced inside the zoosporangia. The reproduction by zoospores occurs in some lower fungi- Phycomycetes. ( e.g., Achlya, Spirogyra, Albugo).

C. Stem cutting is most commonly used for artificial vegetative propagation. About 20-30 cm long pieces of stem are planted in the natural position in the soil for proper sprouting. E.g., grapes, Sugarcane, Rose.

D. Conidiospores are non- motile spores produced singly or in chains by constriction at the tip or lateral side of special hyphal branches, called conidiophores. E.g., Penicillium.

So, the correct answer is 'A- iv, B-i, C- ii, D-iii'.