TEST OF BIOLOGY
1.
Bateson used the terms coupling and repulsion for linkage and crossing over. Name the correct
parental or coupling type along with its cross over or repulsion.
(a) coupling aaBB, aabb; repulsion AABB, aabb
(b) coupling AABB, aabb; repulsion AABB, AAbb
(c) coupling AAbb, aaBB; repulsion AaBb, aabb
(d) coupling AABB, aabb; repulsion AAbb, aaBB
2.
The linkage map of X-chromosome of fruit fly has 66 units, with yellow body gene (y) at one
end and bobbed hair (b) gene at the other end. The recombination frequency between these
two genes (y and b) should be
(a) < 50%
(b) 100%
(c) 66%
(d) > 50%
3.
Which of the following discoveries resulted in a Nobel Prize?
(a) Genetic engineering
(b) Cytoplasmic inheritance
(c) Recombination of linked genes
(d) X-ray induce sex-linked recessive lethal mutations
4.
Which of the following was used in experiments by Beadle and Tatum to propose one gene
one enzyme hypothesis?
(a) Nostoc
(b) Drosophila
(c) E.coli
(d) Neurospora
5.
Which of the following is not characteristic of heterochromatin?
(a) associated with active genes
(b) usually found in centromeric regions
(c) identifiable in at least some interphase chromosomes
(d) located in the dark bands of polytene chromosomes
6.
The reason why some mutations which are harmful do not get eliminated from gene pool is
that
(a) they have future survival value
(b) they are dominant and show up more frequently
(c) they are recessive and carried by heterozygous
(d) genetic drift occurs because of small populations
7.
In a DNA double helix
(a) the single strands are not helical
(b) phosphodiester bonds are oriented towards the interior of the helix
(c) adenine on one strand is hydrogen bonded to thymine on the opposite strand
(d) hydrogen bonds from between a purine and pyrimidine base on the same strand
8.
Anticodon is a base triplet on
(a) m-RNA complementary to base
(b) m-RNA complementary to base sequence on t-RNA
(c) t-RNA complementary to base sequence on r-RNA
(d) t-RNA complementary to base sequence on m-RNA
9.
10.
The “central dogma” of molecular biology
(a) states that translation precedes transcription
(b) state that DNA is template for all RNA production
(c) pertains only to prokaryotes because humans are unique
(d) states that DNA is a template only for DNA replication
FSH and LH is
(a) vasopressin
(c) gonadotropin
(b) vitamin
(d) enzyme
11.
Darwin failed to give explanation about?
(a) survivial of fittest
(b) competition
(c) variation
(d) high reproduction rate
12.
Southern blotting is done for
(a) DNA
(b) RNA
(c) nRNA
(d) protein
13.
Earthworms have how many segments?
(a) 85 – 400
(b) 100 – 200
(c) 20 – 95
(d) 115 – 120
14.
Gizzard of cockroach is a part of
(a) respiratory system
(b) digestive system
(c) immune system
(d) circulatory system
15.
Hypothyroidism causes in adult
(a) cretinism
(b) myxoedema
(c) obesity
(d) diabetes
16.
Carrot is micropropagate through
(a) embryo
(b) embryoids
(c) shoot culture
(d) callus
17.
C4 plant shows efficiency even in
(a) low CO2 concentration
(b) low temperature
(c) high O2 concentration
(d) at low water
18.
Ferrodoxin contain
(a) Mg
(c) iron
19.
(b) Co
(d) nitrite
Root develop from any part of plant is
(a) tap root
(b) adventitious
(c) primary root
(d) secondary root
20.
Centrosome are present
(a) in plant cell only
(b) in animal cell
(c) in both plant and animal cell (d) None of these
21.
Adenine is 30% then what would be the 5% of guanine?
(a)10%
(b) 20%
(c) 30%
(d) 40%
22.
Which was not present in its original form in the primitive atmosphere of earth?
(a) H2
(b) CH4
(c) O2
(d) NH3
23.
Source of light in an electron miscroscope is
(a) infrared rays
(b) UV rays
(c) visible light
(d) electron beam
24.
RQ (Respiratory Quotient) for carbohydrates is
(a) 0
(b) > 1
(c) < 1
(d) = 1
25.
Multinucleate aseptate hyphae present in Rhizopus are called
(a) homothallic
(b) heterothallic
(c) trichogone
(d) coenocyte
26.
Which of these is incorrect for translation?
(a) it occurs inside the nucleus
(b) it occurs inside the cytoplasm
(c) it is under operon regulation (d) protein are synthesized from it
27.
Which is a result of ADH deficiency?
(a) increase urine output
(b) increased water in urine
(c) less urine
(d) no urination
28.
Which of the following is not an intermediate of Kreb cycle?
(a) acetyl CoA
(b) citric acid
(c) lactic acid
(d) succinic acid
29.
Plants growing near seashores are expected to behave is
(a) hydrophytes
(b) xerophytes
(c) lithophytes
(d) halophytes
Directions (30-38) : In each of the following questions, a statement of assertion is given and a
corresponding statement of reason is given just below it. Of the statements, mark the correct answer
as30.
Assertion: Diatoms are golden brown or yellow in colour.
Reason: Cell wall in diatoms in silicified.
31.
Assertion: Slime moulds resembles both protozoa and true fungi.
Reason: They show saprotrophic nutrition.
32.
Assertion: Gout is a communicable disease.
Reason: In gout body forms excess ammonia.
33.
Assertion: Pinus has mycorrhizal roots.
Reason: Pinus roots are associated with fungi.
34.
Assertion: Pinus displays the alternation of generations.
Reason: The gametophyte is dependent upon the sporophyte phase.
35.
Assertion: Intraspecific completition is always more acute than interspecific oneo.
Reason: Intraspecific completition controls the size of population
36.
Assertion: Seeds sown deeply in the soil shows negligible sign of germination.
Reason: Seeds have less oxygen content in such condition.
37.
Assertion: Number of division occurred in Oedogonium can be estimated by counting number
of apical cap.
Reason: A new cap appear on each successive division.
38.
Assertion: The telogenic gonad is found in Ascaris.
Reason: Telogenic is a condition of ovary.
39.
Gymnosperms generally have
(a) tap roots
(b) adventitious roots
(c) small roots
(d) none of these
40.
Seeds in gymnosperms represent
(a) single generation (b) 2 generations
(c) 3 generations
(d) none of these
41.
Phenomenon of ‘Sulphur shower’ is related with
(a) Cycas
(b) Pinus
(c) Ginkgo
(d) none of these
42.
Birbal Sahni discovered a fossil plant from Rahmahal hills. It belongs to
(a) Angiosperms
(b) Gymnosperms
(c) Bryophyta
(d) Pteridophyta
43.
Term ‘Alternation of generations’ was first used in plants by
(a) Amici
(b) Hofmeister
(c) Kolreuter
(d) none of these
44.
Ubisch bodies are provided by
(a) tapetum
(b) pollen kitt
(c) exine
(d) intine
45.
If the innermost layer of integument becomes specialized as a nutritive layer, it is
(a) tapetum
(b) endothecium
(c) endosperm
(d) endothelium
46.
Tapetum and endothecium in anther are derived from
(a) primary sporogenous cell
(b) primary parietal cell
(c) both (a) and (b)
(d) none of these
47.
Male gametes or sperms are developed from generative cells by
(a) meiotic division
(b) mitotic division
(c) amitotic division
(d) pollen grains
48.
Large irregular ovoid cells found in areolar tissue are
(a) fibroblasts
(b) macrophages
(c) mast cells
(d) chromatophores
49.
Which of the following is responsible for initiating cell mediated immune responses and have
long life span also?
(a) T-lymphocytes
(b) B-lymphocytes
(c) eosinophils
(d) adipose cells
50.
Formation of cartilage bones involves deposition of bony matter by
(a) osteoblasts and resorption by chondroclasts
(b) osteoclasts and resorption by chondroblasts
(c) osteoclasts only
(d) osteolbasts only
ANSWER KEYS
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
(d)
(c)
(d)
(d)
(a)
(c)
(c)
(d)
(b)
(c)
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
(c)
(a)
(d)
(b)
(b)
(d)
(a)
(c)
(b)
(b)
21.
22.
23.
24.
25.
26.
27.
28.
29.
30.
(b)
(b)
(d)
(b)
(d)
(b)
(b)
(c)
(d)
(b)
31.
32.
33.
34.
35.
36.
37.
38.
39.
40.
(b)
(d)
(a)
(b)
(b)
(a)
(a)
(c)
(a)
(c)
41.
42.
43.
44.
45.
46.
47.
48.
49.
50.
(b)
(b)
(b)
(a)
(d)
(b)
(b)
(c)
(a)
(a)