166 .Which of the following is a Biological method of soil conservation?
A.  Contour farming
B.  Contour terracing
C.  Gully control
D.  Basin listing
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167 .According to your text, 'What can be thought of as the genetic library that keeps life going on Earth'?
A.  A bio- engineering lag
B.  Human genes
C.  The human genome project
D.  Biodiversity
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168 .The genetically engineered 'Golden Rice is rich' in which of the following-
A.  Vitamin A and nicotinc acid
B.  B – Carotene, Vitamin A and folic acid
C.  B – Caroten and iron
D.  Vitamin A and niacin
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169 .Recombinant DNA technology
(Genetic Engineering) allows genesto be transferred.
1. across animal's species of plants
2. from animals to plants
3. from microorganisms to higherorganisms
Select the correct answer using thecodes given below.

A.  1 only
B.  2 and 3 only
C.  1 and 3 only
D.  1, 2 and 3
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170 .A clone is a group of individual obtained through:
A.  Self pollination
B.  Micropropagation
C.  Hybridization
D.  Cross pollination
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171 .First hormone prepared by genetic engineering is-
A.  Oxytocin
B.  Somato tropin
C.  Adrenalin
D.  Insulin
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172 .A genetically engineered form of bringjal known as the Bt-bringal has been developed. The objective of this is-
A.  To make it pest – resistant
B.  To improve its taste and nutritive qualities
C.  To make it drought resistant
D.  To make its self-life longer
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173 .With reference to 'stem cells',frequently in the news, which of thefollowing statements is/are correct?
1. Stem cells can be derived frommammal only.
2. Stem cells can be used forscreening new drugs.
3. Stem cells can be used formedical therapies.Select the correct answer using thecodes given below:
A.  1 and 2 only
B.  2 and 3 only
C.  3 only
D.  1, 2 and 3
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