Download 1 - Sikkim NIC

Botany and Zoology
1. Era of mammals is known as
A.
B.
C.
D.
Cenozoic
Mesozoic
Paleozoic
Pre-cambrian
2. Last stage in complete aerobic respiration of a molecule of glucose involving in
the production of ATP results in
A.
B.
C.
D.
breakdown of fumaric acid
break down of malic acid
succinic acid
none of the above
3. Which of the following relationships between cell-structure and their respective
function is not correct?
A.
B.
C.
D.
Cell wall-support
Cilia –chief site of diffusion
Chromosome- contain control information
Ribosomes-site of enzyme synthesis
4. Who was the first one to isolate T.M.V?
A.
B.
C.
D.
W.M.Stanely
K.M.Smith
D.Iwanowsky
S.L.Miller
5. Duplication of chromosomes occurs during
A.
B.
C.
D.
mitosis only
mitosis and meiosis only
meiosis only
none of the above
6. A compound which is produced by an organism and inhibit the growth of other
organism is called as
A.
B.
C.
D.
Antiseptic
Anti coagulant
Anti allergy
Anti biotic
7. Chromosomes are made up of small structures called
A.
B.
C.
D.
Nuclei
Genes
Nucleoli
Buds
8. A DNA strand is directly involved in the synthesis of all the following except
A.
B.
C.
D.
Another DNA strand
Protein molecule
t- RNA molecule
m-RNA molecule
9. Genetic mutation occurs in
A.
B.
C.
D.
DNA
RNA
Chromosome
Nucleus
10. Transcription is a process by which
A.
B.
C.
D.
two daughter strands of DNA are synthesized
amino acids are joined to form polypeptides
an RNA molecule is synthesized within a ribosome
an RNA molecule is synthesized on a DNA strand
11. Which of the following is a climatic factor in ecology?
A.
B.
C.
D.
Altitude
Soil structure
Temperature
Oxygen
12. Water absorbed by roots from the soil is
A.
B.
C.
D.
rainwater
free running water
dew
hygroscopic water
13. Plants are killed in winter by frost because
A.
B.
C.
D.
water in the plants freezes
water expand breaks the cell
desiccation
no photosynthesis takes place at low temperature
14. With regard to ecological food chain man is a
A.
B.
C.
D.
consumer
producer
both consumer and producer
producer and decomposer
15. Xylem conducts water from
A.
B.
C.
D.
roots to leaves
leaves to roots
tracheid to vessels
fiber to tracheids
16. Cork cells are impervious because of
A.
B.
C.
D.
cellulose
cutin
lignin
suberin
17. Wood is the common name of
A.
B.
C.
D.
cambium
phloem
secondary xylem
vascular xylem
18. Where would you find climbing roots?
A.
B.
C.
D.
Pandamus
Banyan
Broyophyllum
Piper plant
19. Where would you find tuberous root?
A.
B.
C.
D.
Radish
Dahlia
Mirabilis
Orchid
20. What is the usual method of propagation in rose?
A.
B.
C.
D.
By bulbs
By cut stems
By cut roots
By Rhizome
21. Ginger is a stem and not root because
A.
B.
C.
D.
it stores food
it is better in taste
it has distinct nodes and internodes
it is a defensive organ
22. Bulb is the modification of
A.
B.
C.
D.
stem
root
plumule
radicle
23. Which of these following have compound leaves?
A.
B.
C.
D.
Mango
Drosera
Sunflower
Fern
24. Phyllotaxy in Calotropis is
A.
B.
C.
D.
alternate
opposite decussate
opposite superposed
whorled
25. Male part of the flower is
A.
B.
C.
D.
thalamus
androecium
calyx
gynoecium
26. In Leguminosae family the number of carpel is
A.
B.
C.
D.
One
Two
Three
Four
27. Rosaceous corolla is found in
A.
B.
C.
D.
Tea
Radish
Mustard
Dianthus
28. When the filaments are united into two bundles stamens are said to be
A.
B.
C.
D.
monadelphous
diadelphous
polyadelphous
syngenesious
29. A spike of unisexual flowers is found in
A.
B.
C.
D.
Bottle brush
Wheat
Mulberry
Amaranthus
30. Verticillaster is a type of
A.
B.
C.
D.
Inflorescence
Flower
Fruit
Stem modification
31. The main function of the sepals is to
A.
B.
C.
D.
Attract insects to the flower
Produce scent or nectar
Protect the flower when it is in bud
Provide a platform for insects to alight on
32. A condition in which the gynoecium matures before androecium of the same
flower is called
A.
B.
C.
D.
protogyny
protandry
herkogamy
heterostyly
33. The transfer of pollen from anther of one plant to the stigma of another plant of the
same species is known as
A.
B.
C.
D.
autogamy
allogamy
homogamy
cleistogamy
34. Cleistogamy is found in
A. Commelina
B. Ficus
C. Vallisneria
D. Anthocephalus
35. Fusion of two dissimilar gametes is known as
A.
B.
C.
D.
fertilization
dichogamy
autogamy
allogamy
36. Who was the first to describe the double fertilization?
A.
B.
C.
D.
Mendel
Huxley
Nawaschin
Darwin
37. The edible part of the coconut is
A.
B.
C.
D.
endosperm
mesosperm
aril
thalamus
38. The outer layer of the seed coat is called
A.
B.
C.
D.
tegmen
testa
funicle
hilum
39. A true fruit is developed from
A.
B.
C.
D.
Ovary
Thalamus
Calyx
Receptacle
40. The edible part of mango is
A.
B.
C.
D.
endosperm
mesocarp
epicarp
thalamus
41. Parthenocarpy is
A.
B.
C.
D.
formation of fruit without fertilization
formation of seed without fertilization
formation of seedless fruit
none of the above
42. Mango, peach and coconut fruits are
A.
B.
C.
D.
berry
drupe
pepo
pome
43. What is the study of algae called as?
A.
B.
C.
D.
Bryology
Phycology
Mycology
Urology
44. Gram’s stain is
A. a stain prepared out of gram seed
B. a trade mark
C. a staining technique developed by the Danish scientist Gram for the
differentiation of bacteria
D. none of the above
45. Common human intestinal bacterium is
A.
B.
C.
D.
Streptococcus
Escherichia coli
Mycobacterium
Diplococcus
46. Dark reaction in photosynthesis is known as
A.
B.
C.
D.
Blackman reaction
Calvin cycle
Smutt’s cycle
Bose reaction
47. In Aspidium and Pteris the stele is
A.
B.
C.
D.
protostelic
ectopholic
amphipholic
dictyosteliic
48. In which of the following manner gymnosperms differ from angiosperms?
A.
B.
C.
D.
In formation of endosperm before fertilization
In production of naked ovules in gymnosperms
In formation of pollen tubes
None of the above
49. Water from soil is absorbed by
A.
B.
C.
D.
root tip
root hair
primary root
endodermis
50. In the first stage of photosynthesis light energy is used to
A.
B.
C.
D.
move water molecules
denature chlorophyll
split water molecules
produce osmotic pressure
51. Which one of these is the most recent ancestor of Homo sapiens?
A.
B.
C.
D.
Pithecanthropus
Cro-Magnon man
Heidelberg man
Ramapithecus
52. Fossils contents of alimentary are known as
A.
B.
C.
D.
casts
trails
caprolite
impression
53. Darwin’s concepts of evolution
A.
B.
C.
D.
are accepted today in toto
have been completely refuted
rejected the inheritance of aquired characters
are the basis of mordern theories of evolution
54. Leydigs cells are meant to
A.
B.
C.
D.
secrete testosterone
support testes
support epididymis
support vas deference
55. Allantois of the developing mammalian embryo helps the embryo in
A.
B.
C.
D.
respiration
nutrition
protection
excretion
56. Dropsy means
A.
B.
C.
D.
accumulation of toxins in the body parts
accumulation of watery fluid in any part of the body
enlargement of kidney
defective muscles of eye
57. Cretenism is caused due to deficiency of
A.
B.
C.
D.
Pituitary
Thyroid
Pancreas
Adrenal
58. Which of the following process does not require metabolic energy?
A.
B.
C.
D.
Blood circulation
Muscle contraction
Passage of a nerve impulse across a synapse
Passage of nerve impulse along an axon
59. Diuresis is a condition which
A.
B.
C.
D.
increases the volume of urine excreted
decreases the volume of urine excreted
increases electrolyte balance
decreases electrolyte balance
60. Arteriosclerosis is the condition in which
A.
B.
C.
D.
Hardening of arteries takes place
Deposition of lipids occurs in the arterial wall
Destruction of arteries takes place
Hardening of veins takes place
61. Purkinje’s fibres are associated with
A.
B.
C.
D.
SA Node
Veins
arteries
Tricuspid valve
62. Which of the following does not produce any digestive enzyme?
A.
B.
C.
D.
Intestinal mucosa
Gastric mucosa
Pancreas
Liver
63. Which word best describes the action of bile?
A.
B.
C.
D.
Neutralizes
Digests
Emulsifies
Absorbs
64. The function of Iris is
A.
B.
C.
D.
to stir aqueous humor
to protect lens
to regulate the size of pupil
to direct the rays of light to the retina
65. The structure that helps a person maintain his balance is
A.
B.
C.
D.
semi-circular canal
cochlea
eustachian tube
malleus
66. When pungent chemical substances get into the nasal cavity
A.
B.
C.
D.
they are picked up by olfactory lobes of the brain
they go into solution with mucus
they are dissolved in the water of the nasal bones
they diffuse into the brain
67. The number of cranial nerves in frog are
A.
B.
C.
D.
10 pairs
11 pairs
12 pairs
13 pairs
68. In mammals corpus callosum joins
A.
B.
C.
D.
Two cerebral hemispheres
Two optic lobs
Two olfactory lobes
Optic chiasma
69. Goblet or mucous neck cells are produced inside
A.
B.
C.
D.
Colon
Gall bladder
Liver
Kidney
70. In frogs Bidders canal is meant for the passage of
A. urine
B. sperm
C. water
D. ova
71. In man, the kidneys are
A.
B.
C.
D.
in the thoracic cavity
in the groin
attached to the dorsal wall of the abdominal cavity
just under the diaphragm
72. CCK is responsible for the contraction of
A.
B.
C.
D.
Liver
Heart
Gall bladder
Kidney
73. pulmonary breathing is accelerated when frog is
A.
B.
C.
D.
hibernating
excited
under water
waiting for prey
74. Blood returns from lungs to heart through
A.
B.
C.
D.
Right auricle
Right ventricle
Left ventricle
Left auricle
75. Muscular movements of the alimentary canal which move the food is called
A.
B.
C.
D.
Contraction
Expansion
Peristalsis
Reflex action.
76. The largest organ in human body is
A.
B.
C.
D.
Brain
Liver
Kidney
Heart
77. How much KJ of energy is produced by 1 ATP?
A.
B.
C.
D.
22 KJ
42 KJ
34 KJ
32 KJ
78. Vitamin D is synthesized by
A.
B.
C.
D.
Liver
Skin
Gall bladder
Pancreas
79. Which contractile fibers are found in the muscles?
A.
B.
C.
D.
Elastic fibres
White
Microfibrils
Myofibrils
80. The ratio between body weight and blood volume in man is
A.
B.
C.
D.
1/6
1/13
1/16
7/20
81. Neutrophils serve as
A.
B.
C.
D.
Shock troops
Mopping up
Histiocytes
Macrophages
82. From where the spider prepares the web
A.
B.
C.
D.
Mouth
Legs
Spinners
Salivary glands
83. What is the name of the full-grown larva of Musca domestica?
A.
B.
C.
D.
Puparium
Maggot
Caterpillar
Cocoon
84. Mouth parts of mosquito are of
A. biting type
B. sucking type
C. piercing and sucking type
D. chewing type
85. Which one of these is a poisonous lizard?
A.
B.
C.
D.
Varanus
Chameleon
Heloderma
Hemidactylus
86. The main function of the blood of Cockroach is to
A.
B.
C.
D.
Take up Carbon di-oxide from the haemolymph
Circulate the hormones
Transport the foods
Carry metabolic wastes to the excretory organ.
87. What would you call the study of fishes?
A.
B.
C.
D.
Ichthyology
Herpetology
Saurology
Ornithology
88. Where would you find Ascaris lumbricoides?
A.
B.
C.
D.
Human blood
Intestine of man
Spleen of man
Urinary bladder of man
89. Which of these is a secondary host of Taenia solium?
A.
B.
C.
D.
Human being
Pig
Dog
Snail
90. Nematocysts of Hydra are derived from
A.
B.
C.
D.
Digestive cells
Interstitial cells
Musculo-epithelial cells
Mesogloea
91. What is the most common composition of skeleton of sponges?
A. Cartilage
B. Spicules and sporgin fibres
C. Mesenchyme
D. Myonemes
92. What is the main function of contractile vacuoles in Paramecium?
A.
B.
C.
D.
Elimination of CO2
Elimination of nitrogenous wates
Control of body fluids
Elimination of undigested food
93. Hydra belongs to phylum
A.
B.
C.
D.
Protozoa
Porifera
Cnidaria
Mollusca
94. Which of the following species of plasmodium causes beningn or tertian malarial
fever?
A.
B.
C.
D.
Plasmodium falcifarum
Plasmodium malariae
Plasmodium ovale
Plasmodium vivex
95. Water percolating through the soil removing soluble substances and nutrients is
known as
A.
B.
C.
D.
Humification
Leaching
Reverse osmosis
Passive absorption
96. In which of these cyst is not formed?
A.
B.
C.
D.
Amoeba proteus
Entamoeba gingivalis
Entamoeba histolytica
Entamoeba coli
97. Which of the following is given as a gift in Japan?
A.
B.
C.
D.
Hyalonema
Euplectella
Tethya
Pheronema
98. Which of these is Aristotle’s classification of animals?
A.
B.
C.
D.
Vertebrata and Invertebrata
Chordata and Non-chordata
Protozoa and Metazoa
Enaima and Anaima
99. What is the name of science dealing with the study of improvement of human
race?
A.
B.
C.
D.
Genetics
Eugenics
Euthenics
Biomterics
100. Who introduced the term ‘Biology’?
A.
B.
C.
D.
Linnaeus
Lamarck
Aristotle
Lamarck and Treviranus