Which one of the following is a pair of endangered species?
(a) Garden lizard and Mexican poppy
(b) Rhesus monkey and sal tree
(c) Clouded leopard and carrot grass
(d) Hornbill and Indian aconite
Which one of the following is a correct statement?
(a) “Bt” in “Bt-cotton” indicates that it is a genetically
modified variety produced through biotechnology.
(b) Somatic hybridisation involves fusion of two complete
plant cells carrying desired genes.
(c) The anticoagulant hirudin is being produced from
transgenic Brassica napus seeds.
(d) “Flavr savr” variety of tomato has enhanced the
production of ethylene which improves its taste.
Select the correct statement given below which mentions
the characteristics of monocot stem anatomy.
(a) Hypodermis is sclerenchymatous, vascular bundles are
closed, phloem parenchyma is present.
(b) Hypodermis is sclerenchymatous, vascular bundles are
closed, phloem parenchyma is absent.
(c) Hypodermis is sclerenchymatous, vascular bundles are
open, phloem parenchyma is absent.
(d) Hypodermis is collenchymatous, vascular bundles are
closed, phloem parenchyma is present.
The cell organelle involved in the glycosylation of proteins is
(a) ribosome (b) peroxisome
(c) mitochondrion (d) Golgi apparatus.
Conditioned reflexes are different than unconditioned reflexes
in which of the following ways?
(a) Conditioned reflexes are limited to brain
(b) Conditioned reflexes are inheritable
(c) Unconditioned reflexes depend on previous experience
(d) Unconditioned reflexes are limited to brain
How many NADPH and ATP are required for the production
of one molecule of glucose in Calvin cycle?
(a) 12 NADPH, 18 ATP (b) 18 NADPH, 12 ATP
(c) 8 NADPH, 12 ATP (d) 2 NADPH, 3 ATP
Which one of the following is the most likely root cause of
absence of menstruation in a human female having normal
menstrual cycles?
(a) Maintenance of the hypertrophical endometrial lining
(b) Maintenance of high concentration of sex-hormones
in the blood stream
(c) Degeneration of corpus luteum
(d) Low production of luteinising hormone
In mature human oocyte, which of the following parts
contains acid mucopolysaccharides?
(a) Cortical granules (b) Zona pellucida
(c) Corona radiata (d) Perivitelline space
19. Read the following statements and choose the correct
option with respect to DNA.
A. Nitrogenous base is linked to the pentose sugar
through a N-glycosidic linkage.
B. Phosphate group is linked to 5’-OH of a nucleoside
through phosphoester linkage.
C. Two nucleosides are linked through 3’ – 5’
N-glycosidic linkage.
D. Negatively charged DNA is wrapped around positively
charged histone octamer to form nucleosome.
(a) A, B and C are wrong (b) D alone is wrong
(c) C alone is wrong (d) A alone is wrong
20. Tissue culture technique can produce infinite number of
new plants from a small parental tissue. The economic
importance of the technique is in raising
(a) genetically uniform population identical to the original
parent
(b) homozygous diploid plants
(c) new species
(d) hybrids of sexually reproducing plants.
21. Drinking of mineral water with very low level of pesticides
(about 0.02 ppm) over a long period may
(a) produce immunity against amoebic dysentery
(b) cause rheumatoid arthritis in most people
(c) cause Wernicke’s syndrome
(d) lead to accumulation of pesticide residues in body.
22. Quarantine regulation are concerned with
(a) spraying of diseased plants with insecticide
(b) prevention of entry of diseased plants in country
(c) growing or entry of diseased plants in country
(d) hybrids of sexually reproducing plants.
23. Which one out of A – D given below correctly represents
the structural formula of Lysine?
