Question

Select the correct set.

Column I	Column II
I. Bamboos	A. Bronchial allergy
II. Microspore	B. Die after flowering
III. Cleistogamous	C. Orchids
IV. Micropropagation	D. Flowers which never open

• A. I - A, II - B, III - C, IV - D
• B. I - B, II - A, III - D, IV - C
• C. I - D, II - B, III - C, IV - A
• D. I - A, II - D, III - B, IV - C

Answer 1

The correct option is B I - B, II - A, III - D, IV - C

• The bamboo is a type of grass belonging to family Poaceae. The mode of propagation is vegetative. Bamboo flower only once during a lifetime.
• Microspores are pollen grains and give rise to allergy. Some Gymnosperms produce pollen in huge numbers called as sulphur showers.
• Cleistogamous means concealed gamy ie flowers that never open. The flowers that open are called chasmogamous flowers. Self-pollination occurs in cleistogamous flowers.
• Orchids are very delicate plants, usually propagated through micropropagation- a small plant part is artificially cultured to produce new plants.
  

So, the correct answer is option B.