Plants are more easily manipulated by genetic engineering than are animals because:

1. Plant genes do not contain introns

2. More vectors are available to transfer rDNA into plant cells

3. Totipotency is a feature generally associated with plant cells and not with animal cells

4. Genes can be inserted into animal cells by microinjection.

A genetically engineered micro-organism used successfully in bioremediation of oil spills is a species of:

(1) Pseudomonas

(2) Trichoderma

(3) Xanthomonas

(4) Bacillus

A transgenic food crop, which may help in solving the problem of night blindness in developing countries is:

1. Flavr savr tomatoes

2. Starlink maize

3. Bt soybean

4. Golden rice

The foreign gene in a transgenic plant may be derived from

(1) an insect 

(2) an animal

(3) a bacteria 

(4) all of these.

Genetically modified (GM) crops can be produced by

(1) recombinant DNA technology

(2) somatic hybridization

(3) cross breeding

(4) micropropagation