- Given below are four methods (A-D) and their modes of
action (i-iv) in achieving contraception. Select their correct
matching from the four options that follow:
Method Mode of Action
A. The pill (i) Prevents sperms reaching cervix
B. Condom (ii) Prevents implantation
C. Vasectomy (iii) Prevents ovulation
D. Copper T (iv) Semen contains no sperms
(a) A-(ii), B-(iii), C-(i), D-(iv)
(b) A-(iii), B-(i), C-(iv), D-(ii)
(c) A-(iii), B-(iv), C-(i), D-(ii)
(d) A-(iv), B-(i), C-(ii), D-(iii)
- There are various types of reproduction, the type of
reproduction adopted by an organism depends on
(a) the habitat and morphology of organism
(b) morphology of organism
(c) morphology and physiology of organism
(d) the organism’s habitat, physiology and genetic make
up.
- The tissue that nourishes the developing pollen grains is
(a) tapetum (b) endothecium
(c) endothelium (d) middle layer.
- A few plants exhibit unusual flowering phenomenon, which
of them flower only once in their life time, generally after
50-100 years and produce large number of fruits?
(a) Strobilanthus kunthiana (b) Bamboo
(c) Calistemon linearis (d) Cymbopogon reptocus
- The girth or diameter of the stem increases due to the
activity of the following.
(a) Apical meristems (b) Intercalary meristems
(c) lateral meristems (d) Parenchyma cells
- leafy green stems of limited growth modified to perform
photosynthesis are called as
(a) phyllode (b) phylloclade
(c) cladode (d) foliar stipules.
- Intercalated discs occur
(a) between neurons
(b) between cardiac muscle fibres
(c) at the junction of muscle and nerve cells
(d) in stripe muscles.
- What is the advantage in clinical use of humulin (human
insulin produced through rDNA technique) over use of
conventional ox or pig insulin?
(a) It does not cause immunological problems.
(b) It is cheaper for the patient.
(c) It is produced by E.coli in our own intestine.
(d) There is no advantage.
24. One of the advantages of developing transgenic mice is that
it is very useful
(a) to study vaccine safety
(b) in producing new varieties of mice
(c) in developing a show piece example
(d) in gene targeting.
25. Identify A, B, C and D in the given diagram.
(a) A-ori, B-ampR, C-tetR, D-Hind III
(b) A-Hind III, B-tetR, C-ampR, D-ori
(c) A-ampR, B-tetR, C-Hind III, D-ori
(d) A-tetR, B-Hind III, C-ori, D-ampR
- The biological product created by the introduction of
portions of DNA which codes for a-1 antitrypsin, is used to
treat
(a) emphysema (b) asthma
(c) bronchitis (d) cystic fibrosis.
- What is true of Bt toxin?
(a) The concerned bacillus has anti toxin.
(b) Bt protein exists as active toxin in the bacillus.
(c) The inactive protein gets converted into active form in
the insect gut.
(d) Activate toxin enters ovaries of pest and sterilize them.
- Which one of these is not a tool of recombinant DNA
technology?
(a) Restriction enzyme (b) Vector
(c) Polymerase enzyme (d) Introns
- The breeding of the unrelated animals which may be
between individuals of the same breed, (but having no
common ancestors), or between different breeds or different
species is known as
(a) interspecific hybridisation
(b) out-breeding
(c) out-crossing
(d) cross-breeding.
- Resistance to yellow mosaic virus in Abelmoschus
esculentus was transferred from a wild species and resulted
in a new variety called
(a) Sehore (b) Raphanus sativus
(c) Parbhani kranti (d) Musa pudica.
