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BIOLOGY -PAGE 8

1. Animals obtain all their carbon through
A)plants
B)soil
C)air
D)water

Ans: A

2. An angiospermic male plant with 24 chromosomes in its pollen mother cells is crossed with female plant bearing 24 chromosomes in its root cells. What would be the ploidy of embryo and endosperm respectively formed after this cross ?
A)24 and 48
B)24 and 24
C)48 and 72
D)24 and 36
9

Ans: D

3.Which one of the following has bast fibres ?
A)parenchyma
B)sclerenchyma
C)phloem
D)xylem

Ans: C

4.In how many interlocking rings are the carbon atoms arranged in a steroid molecule ?
A)1
B)2
C)3
D)4

Ans: D

5.Which of the following cross will give recessive progeny in F1 generation ?
A)TT × tt
B)Tt × TT
C)tt × tt
D)TT × TT

Ans: C

6.The structure producing basidium in Basidiomycetes is formed by the fusion of 
A)two vegetative cells
B)two male gametes

C)two female gametes
D)male and female gametes

Ans: A

7.What are the spindle fibres that connect the centromere of chromosome to the respectivepoles called ?
A)Astral rays
B)Interpolar fibres

C)Chromosomal fibres
D)Inter chromosomal fibres

Ans: C

8.In plant breeding, the entire collection of plants/seeds having the diverse alleles of all genesin a particular organism is called
A)gene bank
B)cDNA library
C)genomic library
D)germ plasm

Ans: D

9.In  Albizzia, vegetative propagation takes place with the help of 
A)fasciculated tuberous roots
B)epiphyllous buds

C)subaerial branches
D)nonfleshy roots

Ans: D

10.Excess of Manganese inhibits the translocation of _________ to the shoot apex.
A)Calcium
B)Potassium
C)Iron
D)Magnesium

Ans: A

11.The correct sequence of the substages of Prophase I is
A)Diakinesis
→ Pachytene → Diplotene → Zygotene → Leptotene
B)Leptotene → Zygotene →Pachytene → Diplotene → Diakinesis
C)Pachytene → Zygotene → Leptotene → Diplotene → Diakinesis
D)Leptotene → Zygotene → Diplotene → Diakinesis → Pachytene
Ans: B

12.Acetylation of Pyruvate takes place in the _________
A)perimitochondrial space
B)mitochondrial matrix

C)cristae
D)F
1  particles
Ans: A

13.Which one of the following is NOT true about monocotyledonae ?
A)embryo has single cotyledon
B)leaves show parallel venation
C)flowers are generally trimerous
D)vascular bundles are conjoint, collateral and open
Ans: D

14.How many NAD molecules get reduced in complete oxidation of one glucose molecule ?
A)2
B)5
C)10
D)12

Ans: C

15.Which one of the following is used in the production of citric acid ?
A)
Aspergillus niger 
B)  Rhizopus arrhizus
C)  Acetobacter aceti
D)  Saccharomyces cerevisiae
Ans: A

16.Select the correct statements from the following :
I.Endosperm is generally triploid in angiosperms.
II.All angiosperms have monosporic and endosporic embryo sac.
III.Angiosperms are characterised by double-fertilization
IV.All angiosperms show-indirect pollination and siphonogamy.
A)I, II and III
B)II, III and IV
C)I, III and IV
D)I, II, III and IV

Ans: C

17.Cross pollination does not occur in
A)allogamous flowers
B)geitonogamous flowers

C)cleistogamous flowers
D)chasmogamous flowers

Ans: C

18.Which one of the following is a dicot weedicide ?
A)2, 4-D
B)NAA
C)IBA
D)IAA

Ans: A

19.What will be the number of histone molecules in a chromatin fibre having 50 nucleosomes ?
A)400
B)450
C)500
D)1000

Ans: B

20.Which one of the following is the first group of vascular plants ?
A)Thallophyta
B)Bryophyta

C)Pteridophyta
D)Spermatophyta

Ans: C

21.Senescense in plants leads into ___________ of cells.
A)increase in size
B)increase in number

C)death
D)differentiation

Ans: C

22.Capsule is a kind of _________ fruit.
A)simple, dry and dehiscent
B)simple, dry and indehiscent

C)an aggregate
D)simple and fleshy

Ans: A

23.The sequence of nucleotides AUGCUUCUC indicates that it is a segment of 
A)sense strand of DNA
B)anti sense strand of DNA

C)RNA
D)polypeptide chain

Ans: C

24.The largest collection of herbarium in India is
A)Central National Herbarium, Kolkata
B)Southern Circle Herbarium, Coimbatore
C)Central Circle Herbarium, Allahabad
D)Blatter Herbarium, Mumbai
Ans: A

25.Enzyme enolase catalyses the conversion of 2 PGA to phosphoenol Pyruvic acid in presence of __________ which is the cofactor.
A)Mn++
B)Fe++
C)Mg++
D)Zn++
Ans: C
26.In India, research in genetic modification of organisms and safety issues are controlled by
A)DBT
B)IARI
C)CSIR
D)GEAC

Ans: D

27.A couple, both carriers for the gene sickle cell anaemia planning to get married, wants toknow the chances of having anaemic progeny ?
A)100%
B)75%
C)50%
D)25%

Ans: D

28.A simple, living permanent tissue which is absent in roots is________
A)Collenchyma
B)Chlorenchyma
C)Aerenchyma
D)Parenchyma

Ans: A

29.The inactive protoxin is activated in the gut of the insect by
A)acidic pH
B)alkaline pH
C)low temperature
D)high temperature

Ans: B

30.In angiosperms, the formation of two male gametes from a pollen grain involves _________divisions.
A)one meiotic and one mitotic
B)two meiotic and two mitotic
C)only two mitotic
D)only two meiotic

Ans: C

31.Guttation occurs through__________
A)roots
B)hydathode
C)trichome
D)stomata

Ans: B

32.Multicostate divergent reticulate venation is seen in _________ leaf.
A) Zizyphus
B)Bamboo
C)Castor
D)Mango

Ans: C

33.Synthesis of one glucose molecule requires ________ reduced NADP molecules.
A)6
B)12
C)18
D)24

Ans: B

34.The arrangement of vascular tissue in hadrocentric vascular bundle is_________
A)concentric
B)radial
C)collateral
D)bicollateral

Ans: A

35.‘Cry’ gene is obtained from
A) Agrobacterium tumefaciens
B) Bacillus thuringiensis
C) Rhizobium leguminosarum
D) Rhizobium phaseoli

Ans: B

36.Gross primary productivity is the rate of production of ________ during photosynthesis.
A)organic matter
B)oxygen
C)carbon di-oxide
D)Chlorophyll

Ans: A

37.Flowers showing basipetal succession are observed in
A) Caesalpinia   and Clerodendron
B)Jasmine and Gold mohar
C)Gold mohar and Caesalpinia
D)  Clerodendron  and Jasmine

Ans: D

38.Identify the incorrect match between the protein and its role.
A)Keratin – structural component of hair
B)Immunoglobulins – protection of body against diseases
C)Haemoglobin – transport of O2  in muscles
D)Thrombin – blood clotting

Ans: C

39.Which of the following show dimorphic chloroplast ?
A)Mango
B)Castor
C)Banyan
D)Amaranthus

Ans: D

40.In a plant cell the Diffusion Pressure Deficit is zero when it is_________
A)plasmolyzed
B)turgid
C)flaccid
D)incipient

Ans: B

41.The total number of types of gametes produced in a cross between a negro and albino parent is
A)64
B)16
C)08
D)04

Ans: C

42.Enzymes required for phosphorylation are located in ________ of chloroplast.
A)Peristromium
B)Plastidome
C)Stroma
D)Quantosome

Ans: D

43.The life cycle of algae such as Spirogyra  is
A)haplontic
B)diplontic
C)haplo-diplontic
D)diplo-haplontic

Ans: A

44.During which stage of Prophase I, genetic recombination of parental characters, takes place ?
A)Zygotene
B)Pachytene
C)Diplotene
D)Diakinesis

Ans: B
45.The depolarization of nerve membrane takes place through influx of _________ ions.
A)Calcium
B)Potassium
C)Sodium
D)Magnesium

Ans: C

46.Which of the following is used to promote growth of new blood vessels, thus helping inwound healing ?
A)HUMULIN
B)TPA
C)TGF – B
D) α – 1 antitrypsin

Ans: C

47.Cellular organization of body is present in
A)Annelida
B)Platyhelminthes
C)Porifera
D)Urochordata

Ans: C
​
48.Oviparous mammal is_________
A) Equus
B)  Macropus
C) Ornithorhynchus
D)  Pteropus

Ans: C

49.The salivary amylase shows maximum digestive action at pH___________
A)3.6
B)6.8
C)7.5
D)8.5

Ans: B

50.The central hollow portion of the vertebra is called__________
A)Neural canal
B)Central canal
C)Auditory canal
D)Vertebro-arterial canal

Ans: A
51.Select the correct statement regarding the Schwann cells
A)Surround axon of myelinated nerve fibre
B)Support muscle fibres
C)Found in Haversian system of bones
D)Form basement membrane of epithelium

Ans: A

52.The colostrum provides_________
A)Naturally acquired active immunity
B)Naturally acquired passive immunity
C)Artificially acquired active immunity
D)Artificially acquired passive immunity

Ans: B

53.The structural unit of bone is__________
A)chondrin
B)cyton
C)osteon
D)ossein
Ans: C

54.The stato-acoustic receptor responds to changes in the_________
A)Light and pressure
B)Pressure and touch
C)Pain and pressure
D)Sound and equilibrium

Ans: D

55.The chromosome with centromere near the end is called__________
A)Acrocentric
B)Metacentric
C)Sub-metacentric
D)Telocentric

Ans: A

56.One of the following is NOT a possible reason for use of CNG in automobiles
A)It can be adulterated
B)It is cheaper than petrol
C)It burns more efficiently
D)It reduces pollution

Ans: A

57.The diurnal rhythms are regulated by__________
A)Adrenalin
B)Melatonin
C)Serotonin
D)Vasopressin

Ans: B

​
58.Afforestation is
A)restoring a forest
B)plantation in barren lands
C)cultivation under agriculture
D)jhum cultivation
Ans: B
59.In DNA fingerprinting technique, __________ probe is used for hybridization of DNA fragments.
A)Double stranded RNA
B)Double stranded non-radio active DNA
C)Single stranded radio active DNA
D)Single stranded radio active RNA
Ans: C

60.Find the Odd one out :
A) Adamsia
B) Astraea
C) Physalia
D) Pleurobrachia
Ans: D

61.The totipotent cell can form a _____________
A)Bud
B)Cell membrane
C)Cell organelle
D)Complete new organism
Ans: D

62.The nodal tissue located in the lower left corner of the right atrium is _____________
A)SA node
B)AV node
C)AV bundle
D)Purkinje fibres
Ans: B

63.Which of the following hormones initiate the parturition ?
A)ACTH, HCG, Oxytocin
B)ACTH, Corticosteroid, Oxytocin
C)Corticosteroid, ACTH, Prostaglandin
D)ACTH, Progesteron, HCG
Ans: B

64.The primary lymphoid organ is________
A)Tonsils
B)Payer’s patches
C)Lymph nodes
D)Thymus
Ans: D

65.Synapse is_______________
A)Crossing over between non-homologous chromosomes
B)Pairing of homologous chromosomes
C)Junction between axon and dendrites of two different neurons
D)Zig zag junctions in cardiac muscle fibres
Ans: C

66.Which of the following animal has enucleated erythrocytes ?
A)Earthworm
B)Sepia
C)Frog
D)Rat
Ans: D

67.Which of the following produces erythropoietin ?
A)Kidney
B)Pancreas
C)Pineal gland
D)Thyroid gland
Ans: A

68.Which is CORRECT regarding genetically engineered insulin using  E. coli ?
A)Difficult to purify
B)Obtained in large unlimited quantities
C)Possibility of transmission of animal diseases
D)Insulin obtained varies in chemical structure
Ans: B

69.Dobson unit is used in measurement of _________ level.
A)Chlorofluoro carbons
B)Nitrous oxide
C)Ozone
D)UV – B radiation
Ans: C

70.In cockroach, the common duct of salivary reservoir opens at the base of the ________
A)Pharynx
B)Maxilla
C)Mandible
D)Hypopharynx
Ans: D

71.The wall of urinary bladder in humans shows a thick layer of smooth muscle called_____
A)Dartos
B)Detrusor
C)Deltoid
D)Depressor
Ans: B

72.The technique used to block the passage of sperm in male________
A)Tubectomy
B)Vasectomy
C)Coitus interruptus
D)Rhythm method
Ans: B

73.The structure which prevents the entry of food particles into the respiratory passage is ____
A)Epiglottis
B)Glottis
C)Larynx
D)Pharynx
Ans: A

74.Identify vertebrochondral ribs from the following :
A)All 12 pairs of ribs
B)1st to 7th  pairs of ribs
C)8th, 9th  and 10th  pairs of ribs
D)11th  and 12th  pairs of ribs
Ans: C

75.“Testis are extraabdominal in position”. Which of the following is most appropriate reason ?
A)Narrow pelvis in male
B)Special protection for testis
C)Prostate gland and seminal vesicles occupy maximum space
D)2.0 – 2.5° C lower than the normal body temperature
Ans: D

76.The Malignant malaria is caused by __________
A) Plasmodium vivax
B) Plasmodium malariae
C) Plasmodium ovale
D) Plasmodium falciparum
Ans: D

77.The total number of podomeres in each leg of cockroach is_________
A)5
B)6
C)7
D)8
Ans: A

78.Which of the following store proteins ?
A)Chromoplasts
B)Aleuroplasts
C)Amyloplasts
D)Elaioplasts
Ans: B

79.Pneumotaxic centre is located in_______
A)Medulla oblongata
B)Pons
C)Cerebrum
D)Diencephalon
Ans: B

80.In case of a couple where a man is having very low sperm count, which of the following technique will be suitable for fertilization ?
A)Infra uterine transfer
B)Gamete intra cytoplasmic fallopian transfer
C)Artificial insemination
D)Intra cytoplasmic sperm injection
Ans: C

81.The rise of 1st  primates occurred in _________ epoch.
A)Palaeocene
B)Oligocene
C)Miocene
D)Eocene
Ans: A
82. Restriction endonuclease, in DNA finger printing, carries out following process.
(A) Fragmentation of DNA (B) Getting copies of DNA (C) Loading DNA on agaroseplate (D) Synthesis of DNA
Ans: A
 
83. Which one of the following is NOT the symptom of malaria ?
(A) Arthralgia (B) Fever (C) Dysentery (D) Shivering
Ans: C
 
84. In ECG, P – wave represents
(A) Ventricular repolarization (B) Ventricular depolarization (C) Atrial depolarization (D) Atrial repolarization
Ans: C

85. The isthmus which connects right and left lobes of thyroid gland is located from _____________ tracheal cartilages.
(A) 1st to 3rd  ( B) 2nd to 4th (C) 5th to 7th  (D) 6th to 8th
Ans: B
 
86. Asexual reproduction through formation of gemmule occurs in
(A) Ascidian (B) Hydra (C) Planaria (D) Spongilla
Ans: D
 
87. The marsupial mammal amongst the following animals is
(A) Gibbon (B) Kangaroo (C) Lemur (D) Spiny ant-eater
Ans: B
 
88. When white eyed and miniature winged Drosophila melanogaster is crossed with its wild type, it produces following percent of recombinants.
(A) 1.3% (B) 37.2% (C) 62.8% (D) 98.7%
Ans: B
 
89. Asiatic wild ass is an example of
(A) Endangered species (B) Extinct species (C) Rare species (D) Vulnerable species
Ans: A
 
90. The quantitative and statistical study of human population is
(A) Calligraphy (B) Demography (C) Topography (D) Seismography
Ans: B
 
91.  Cystic fibrosis can be treated by _______________ in gene therapy.
(A) TGF-B (B) TPA (C) DNase (D) BGH
Ans: C

92. ADH carries out following functions EXCEPT
(A) Increases blood pressure (B) Increases glomerular filtrate rate (C) Increases permeability for water in DCT (D) Increases Na+ excretion
Ans: D
 
93. Which of the following are NOT produced as transgenic animals ?
(A) Sheep and Pig (B) Rat and Rabbit (C) Dog and Banded Krait (D) Cow and Fish
Ans: C
  
94. Temporal lobe of cerebrum is concerned with the detection of following sensations EXCEPT
(A) Hearing (B) Pressure (C) Smell (D) Taste
 Ans: B
 
95. The sterilization procedure in human female is
(A) Coitus interruptus (B) Rhythm method (C) Tubectomy (D) Vasectomy
Ans: C
 
96. 
Acromegaly is caused by hypersecretion of __________ in the adult.
(A) ACTH (B) GH (C) MSH (D) TSH
Ans: B
 
97. A pair of hormones produced by kidneys is
(A) Erythropoietin and relaxin (B) Erythropoietin and calcitriol (C) Calcitonin and relaxin (D) Calcitonin and calcitriol
Ans: B

98. Alec Jeffreys used ________________ as genetic marker.
(A) HUMULIN (B) Radioactive probe (C) RFLP (D) VNTR
Ans: D
 
99. Which constituent of seminal fluid helps in coagulation of semen after ejaculation ?
(A) Fibrin (B) Fibrinogen (C) Fructose (D) Prostaglandins
Ans: B
 
100. Which one of the following statement is CORRECT ?
(A) Lysergic acid diethylamide is a depressant (B) Heroin is diacetylmorphine
(C) Hashish has hallucinogenic property (D) Cocaine is opioid drug
Ans: B

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      • UPSC INDIAN FOREST SERVICE- SYLLABUS- ANIMAL HUSBANDRY AND VETERINARY SCIENCE
      • UPSC INDIAN FOREST SERVICE- SYLLABUS- BOTANY
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      • GEN. STUDIES- INDIA PAGE 5
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      • UPSC INDIAN FOREST SERVICE- SYLLABUS- PHYSICS
      • UPSC INDIAN FOREST SERVICE- SYLLABUS- STATISTICS
      • UPSC INDIAN FOREST SERVICE- SYLLABUS- ZOOLOGY
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