Question

Match the names given under Column I with their relations given under Column II ,choose the answer which gives the correct combination of the alphabets of the two columns.

Name (Column 1)	Relation (Column 2)
A. Bombyx mori	p. Disease of mulberry
B. Morus alba	q. Centre where silkworm eggs are produced and supplied
C. Grainage	r. Silk moth
D. Powdery mildew	s. Mulberry plant
	t. Freshly hatched silkworm

A. A-q,B-r,C-s,D-t
B. A-r, B-s, C-q, D-p
C. A-r,B-q, C-t, D-s
D. A-s, B-r, C-q, D-t
  zx

Answer 1

Hint: Animal husbandry is that branch of science which is concerned with activities such as farming, caring about the animals staying in farm, and breeding. The example of such animals may include dogs, horses, sheep and cattle.

Complete answer:
The common name of Bombyx mori is silkworm. It is a silk moth. It has been used in the process of sericulture for many thousands of years. Sericulture is defined as the process of rearing and cultivating silkworms. Although there are many commercially available sil worms present, Bombyx mori is the most commonly and preferably used. The common name of Morus alba is white mulberry. It is a small to medium sized tree that is fast growing.It has a similar lifespan to that of humans and they are used for the feeding of silkworms. Grainage is the site where disease-free commercial silkworm seeds or eggs are produced and supplied. Powdery mildew is a disease caused by a fungus that affects a wide range of plants. It is caused by many different types of fungi. It primarily is a disease of the mulberry tree.

Hence, the correct answer is option (B).

Note: Powdery mildew in plants can be easily identified. This is so because they appear as white powdery spots on the affected parts of leaves. With the progression of the disease, the spots become more dense and large. After this, the formation of asexual spores takes place. As this happens, the powdery mildew starts to affect other parts of the plant.