NEET BIOLOGY MCQ-Strategies for Enhancement of Food production

1. In crop improvement haploids are important because they
a)  require one half of nutrients b) are helpful in study of meiosis
c)  grow better under adverse conditions   d) form perfect homozygous

2.   Embryo culture is used for
a)   establishing suspension culture b) recovery of interspecific hybrids
c)   somatic hybridization d) haploid production

3.  The term aquaculture means
a)   inland fisheries b) marine fisheries c) peal culture    d) all of these

4.   Triticale is obtained by crossing wheat with
a)  oat b) barley c) maize d) rye.

5.  Which of the following is generally used for induced mutagenesis in crop plants?
a)  X-rays b) UV-rays c) gamma-rays d) alpha particles

6.   Somaclonal variation appears in
a)   organisms produced through somatic hybridization
b)   plants growing in highly polluted conditions   c) apomictic plants
d)   plants regenerated from a single culture

7.   High milk yielding varieties of cows are obtained by
a)   use of surrogate mothers  b)  super ovulation c)  artificial insemination   d) all of these

8.  Which of the following is an example of hybrid vigour?
a)   mule b) donkey c) horse d) shell fishery

9.  Protein present in silk fibre is
a)  collagen b) fibroin c) elastin d) casein

10.  Cross between donkey and horse for the production of hinny and mule is a
a)    dihybrid cross b) reciprocal cross c)  monohybrid cross      d)  polyhybrid cross

11.  Most abundant sugar of honey is
a)    dextrose b) dextrin c)  levulose d)  maltose

12.  Ranikhet disease in poultry is a
a)    viral disease b) bacterial disease c) fungal disease d) none of these

13. Plant cells can be converted to protoplasts by treating them with
a)   cellulase b)  cellulose+ pectinase
c)    cellulose + pectinase + lipase         d) cellulose + pectinase + lipase + protease

14.  Shaki, Rattan and protina are lysine rich varieties of
a)  maize b)  rice c) wheat d) rye

15.  Cellular totipotency was demonstrated by
a)   Theodore Schwann b)  A.V.  Leeuwenhoek     c) F.C. Steward d) Robert Hooke

16. Modification and adjustment of an organism to local environment is called
a) introduction b) selection c) acclimatisation c) quarantine

17. Ramet is
a)   clone b) individual of clone c) cell aggregate d)  callus

18.  Pomato is
a)   Somatic hybrid b) natural mutant c) androgenic haploid d) somatic embryoid

19.  Explant is
a)    exploited part of a plant b) a small plant part grown for tissue culture
c)    uprooted  plant part for transpiration d) a plant collected after harvest.