45.Select the taxon mentioned that represents both
marine and freshwater species
(a) Ctenophora (b) Echinodermata
(c) Cephalochordata (d) Cnidaria
46.Consider the following statements.
I.High amount of Escherichia coli in water is an
indicator of sewage or faecal pollution.
II. Bhopal gas tragedy of 1984 took place because
methyl isocyanate reacted with air.
III. Chipko movement was initially meant for
protecting trees, but now it is meant for
preservation of environment including habitat and
wildlife.
Which of the statement given above are correct?
(a) I and II (b) I and III (c) II and III (d) I, II and III
47.Antrum is cavity of
(a) ovary (b) Graafian follicle (c) blastula(d) gastrula
48.An aggregate fruit is one which develops from
(a) multicarpellary syncarpous gynoecium
(b) multicarpellary apocarpous gynoecium
(c) complete inflorescence
(d) multicarpellary superior ovary
49.Choose the correct statement from the following and
select the correct code.
I.Naked DNA is acidic.
II. DNA is double stranded left handed helical
structure.
III. Guanosine is a nucleotide.
IV. Two nucleotides are linked in 3 ′ → 5 ′ to form
dinucleotide.
Codes
(a) I and II (b) I and IV (c) I, II, III and IV (d) I, III and IV
50.How parasympathetic neural signal is associated with
heart?
(a) Both heart rate and cardiac output increases
(b) Heart rate decreases but cardiac output increases
(c) Reduces both heart rate and cardiac output
(d) Heart rate is increased without affecting the cardiac output
51.A health disorder myxoedema that results from the
deficiency of thyroxine in adults leads to
I.A low metabolic rate.
II. Increase in body weight.
III. Tendency to retain water in tissues.
IV. Rise in body temperature.
Choose the correct code.
(a) I and IV (b) IV only
(c) II and IV (d) I, II, III and IV
52.Which of the following is an example of sex-linked
disease?
(a) Colour blindness (b) AIDS
(c) Syphilis (d) Gonorrhoea
53.Which of the following is an analogous structure?
(a) Wings of bat and wings of pigeon
(b) Gills of prawn and lungs of man
(c) Thorns of Bougainvillea and tendril of Cucurbita
(d) Flippers of dolphin and legs of horse
54.Consider the following features about climax
community.
I.Rapidly keeps on changing to reach equilibrium
II. Final community
III. End of succession
IV. Stable
Choose the correct set of features from the options given
below.
(a) I and II (b) II, III and IV
(c) I and III (d) I, II, III and IV
55.World Conservation Union is the another name of
(a) UNEP (b) IUCN
(c) UNESCO (d) ICFRE
56.Commonly used vectors for human genome
sequencing project are
(a) Expression vectors (b) T-DNA
(c) BAC and YAC (d) T/A cloning vectors
57.Which of the following technique is not involved in
southern hybridisation for the analysis of chromosomal
DNA?
(a) Autoradiography (b) Electrophoresis
(c) Blotting (d) PCR
58.Function of filiform apparatus is to
(a) recognise the suitable pollen at stigma
(b) stimulate division of generative cell
(c) produce nectar
(d) guide the entry of pollen tube
59.A human female with Turner’s syndrome
(a) has 45 chromosomes with XO
(b) has one additional X-chromosome
(c) exhibits male characters
(d) is able to produce children with normal husband
60.Photosynthetic bacteria have
(a) pigment system-I
(b) pigment system-II
(c) Both (a) and (b)
(d) Some other kind of pigments P 890
61.Taxonomic hierarchy was introduced by
(a) Ernst Mayer (b) Linnaeus
(c) Aristotle (d) RH Whittaker
62.Yellow corpus luteum occurs in a mammal in
(a) heart to initiate heartbeat
(b) skin to function as pain receptor
(c) brain and connects cerebral hemisphere
(d) ovary for secretion of progesterone
63.Cry II Ab and Cry I Ab produce toxins that control
(a) cotton bollworms and corn borer respectively
(b) corn borer and cotton bollworms respectively
(c) tobacco budworm and nematode respectively
(d) nematodes and tobacco budworms respectively
64.The first recombinant DNA was constructed by
(a) Paul Berg
(b) Stanley Cohen and Herbert Boyer
(c) Har Gobind Khorana
(d) James D Wateson