Meristem culture is especially important to obtain: 

1. Drought resistant plants

2. Virus free plants

3. Biofortified plants

4. Androgenic haploids

Consider the following statements :

I. Asexual reproduction preserves the genetic information while sexual reproduction permits variations.

II. Traditional hybridisation often leads to inclusion and multiplication of undesirable genes along with the desired genes.

III. rDNA technology allows us to isolate and introduce only one or set of desirable genes without introducing undesirable genes in the target organism

Which of the above statements are true?

1. I and II only

2. I and III only

3. II and III only

4. I,II and III

Consider the following statements:
 

Which of the above statements are true?

1. I and II only

2. I and III only

3. II and III only

4. I, II and III

Match each item in Column I with one item in Column II and chose your answer from the codes given below:

Codes

            I           II         III         IV

1.         1           2           3           4

2.         2           1           4           3

3.         2           1           3           4

4.         1           2           4           3

Which one is the wrong pairing for the disease and its causal organism?

(1) late blight of potato-Alternaria solani

(2) Black rust of wheat-Puccinia graminis

(3) Loose smut of wheat-Ustilago nuda

(4) Root-knot of vegetables-Meloidogyne sp.

Consider the following four measures (A-D) that could be taken to successfully grow chick pea in an area where bacterial blight disease is common

(A) spray with Bordeaux mixture

(B) control of the insect vector of the disease pathogen

(C) use of only disease-free seeds

(D) use of varieties resistant to the disease

Which two of the above measures can control the disease?

(1) B and C

(2) A and B

(3) C and D

(4) B and D

The crops engineered for glyphosate are resistant/tolerant to

(1) fungi

(2) bacteria

(3) insects

(4) herbicides

Which one of the following is linked to the discovery of Bordeaux mixture as a popular fungicide?

(1) Bacterial leaf blight of rice

(2) Downy mildew of grapes

(3) Loose smut of wheat

(4) Black rust of wheat

Homozygous purelines in cattle can be obtained by

(1) mating of related individuals of same breed

(2) mating of unrelated individuals of same breed

(3) mating of individuals of different breed

(4) mating of individuals of different species

Interspecific hybridisation is the mating of

(1) animals within same breed without having common ancestors

(2) two different related species

(3) superior males and females of different breeds

(4) more closely related individuals within same breed for 4-6 generations