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WBJEE Biology Previous Year (2009)


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80 Questions MCQ Test WBJEE Sample Papers, Section Wise & Full Mock Tests | WBJEE Biology Previous Year (2009)

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WBJEE Biology Previous Year (2009) - Question 1

The length of DNA hgaving 23 base pair is

Detailed Solution for WBJEE Biology Previous Year (2009) - Question 1

Distance between adjacent base pairs = 3.4Å

WBJEE Biology Previous Year (2009) - Question 2

Which Ig is produced in primary immune response?

Detailed Solution for WBJEE Biology Previous Year (2009) - Question 2

IgM is produced in primary response to the given antigen

WBJEE Biology Previous Year (2009) - Question 3

The average diameter of Red Blood Corpuscles of man is

Detailed Solution for WBJEE Biology Previous Year (2009) - Question 3

The average diameter of RBC of man is 7.2 µ m

WBJEE Biology Previous Year (2009) - Question 4

FAD is electron acceptor during oxidation of which of the following?

Detailed Solution for WBJEE Biology Previous Year (2009) - Question 4

FAD is electron acceptor during oxidation of succinic acid to fumaric acid

WBJEE Biology Previous Year (2009) - Question 5

The chemical nature of hormones secreted by α & δ cells of pancreas is –

Detailed Solution for WBJEE Biology Previous Year (2009) - Question 5

Hormones produced by α cells (glucagon) and β cells (somatostatin) are polypeptide

WBJEE Biology Previous Year (2009) - Question 6

The genetic material of Rabies virus is

Detailed Solution for WBJEE Biology Previous Year (2009) - Question 6

The genetic material of Rabies virus is ss RNA

WBJEE Biology Previous Year (2009) - Question 7

T-lymphocyte is produced in

Detailed Solution for WBJEE Biology Previous Year (2009) - Question 7

T-lymphocyte are produced in bone marrow but mature in thymus

WBJEE Biology Previous Year (2009) - Question 8

How many ATP molecules are obtained from fermentation of 1 molecule of glucose?

Detailed Solution for WBJEE Biology Previous Year (2009) - Question 8

Two molecules of ATP are produced by fermentation of one molecule of glucose

WBJEE Biology Previous Year (2009) - Question 9

Number of nitrogenous bases in a Codon is

Detailed Solution for WBJEE Biology Previous Year (2009) - Question 9

Three nitrogenous bases are found in a codon.

WBJEE Biology Previous Year (2009) - Question 10

A character which is expressed in a hybrid is called

Detailed Solution for WBJEE Biology Previous Year (2009) - Question 10

Dominant gene is expressed in a hybrid

WBJEE Biology Previous Year (2009) - Question 11

In which stage of cell division chromosomes are most condensed?

Detailed Solution for WBJEE Biology Previous Year (2009) - Question 11

Chromosome is most condensed in metaphase

WBJEE Biology Previous Year (2009) - Question 12

Which of the following is correct

Detailed Solution for WBJEE Biology Previous Year (2009) - Question 12

Down’s syndrome is trisomy of 21st chromosome

WBJEE Biology Previous Year (2009) - Question 13

Genetically engineered bacteria are being employed for production of

Detailed Solution for WBJEE Biology Previous Year (2009) - Question 13

Human insulin is now being produced by genetically engineered bacteria (E.coli). This insulin is called Humulin

WBJEE Biology Previous Year (2009) - Question 14

Scientific name of sunflower is

Detailed Solution for WBJEE Biology Previous Year (2009) - Question 14

Helianthus annuus is sunflower

WBJEE Biology Previous Year (2009) - Question 15

By which of the following methods, new and better varieties of plants can be formed?

Detailed Solution for WBJEE Biology Previous Year (2009) - Question 15

Better variety of plant can be formed by hybridisation followed by selection.

WBJEE Biology Previous Year (2009) - Question 16

Which one is product of aerobic respiration?

Detailed Solution for WBJEE Biology Previous Year (2009) - Question 16

Malic acid is product of aerobic respiration

WBJEE Biology Previous Year (2009) - Question 17

CO2 acceptor in C3 cycle is

Detailed Solution for WBJEE Biology Previous Year (2009) - Question 17

RUBP (Ribulose 1.5. biphosphate) is CO2 acceptor in C3 plant

WBJEE Biology Previous Year (2009) - Question 18

Virus was discovered by whom?

Detailed Solution for WBJEE Biology Previous Year (2009) - Question 18

Ivanowsky discovered virus

WBJEE Biology Previous Year (2009) - Question 19

Electron microscope is based on principle of

Detailed Solution for WBJEE Biology Previous Year (2009) - Question 19

Electrton microscope is based on principle of electromagnetic theory

WBJEE Biology Previous Year (2009) - Question 20

Citric acid cycle is the alternate name of which of the following?

Detailed Solution for WBJEE Biology Previous Year (2009) - Question 20

Citric acid cycle or Krebs’cycle or Tricarboxylic acid cycle is alternative names

WBJEE Biology Previous Year (2009) - Question 21

Vascular tissue in higher plants develop from which of the following :

Detailed Solution for WBJEE Biology Previous Year (2009) - Question 21

Procambium forms vascular tissue in higher plants

WBJEE Biology Previous Year (2009) - Question 22

Which element is cause of etai etai disease

Detailed Solution for WBJEE Biology Previous Year (2009) - Question 22

Etai etia is caused by Cd

WBJEE Biology Previous Year (2009) - Question 23

Chromosomes can be stained with one of the following chemicals

Detailed Solution for WBJEE Biology Previous Year (2009) - Question 23

Acetocarmine is used to stain chromosome

WBJEE Biology Previous Year (2009) - Question 24

Which one of the following is the American Poultry breed

Detailed Solution for WBJEE Biology Previous Year (2009) - Question 24

Rhod island Red is the American Poultry Breed

WBJEE Biology Previous Year (2009) - Question 25

Which part of the human brain is largest :

Detailed Solution for WBJEE Biology Previous Year (2009) - Question 25

Cerebrum is the largest part of brain

WBJEE Biology Previous Year (2009) - Question 26

When the other floral parts are arranged at the base of the gynoecium, the flower is called :

Detailed Solution for WBJEE Biology Previous Year (2009) - Question 26

Hypogynous flower/Superior ovary

WBJEE Biology Previous Year (2009) - Question 27

In a CAM plant the concentration of organic acid :

Detailed Solution for WBJEE Biology Previous Year (2009) - Question 27

In a CAM plant the concentration of organic acid increases during night

WBJEE Biology Previous Year (2009) - Question 28

Protein coat of virus is known as :

Detailed Solution for WBJEE Biology Previous Year (2009) - Question 28

Protein coat of virus is called capsid

WBJEE Biology Previous Year (2009) - Question 29

Net yield of aerobic respiration during Krebs’ cycle per glucose molecule is :

Detailed Solution for WBJEE Biology Previous Year (2009) - Question 29

Net yield of 2ATP for two Krebs’ cycle (1 glucose molecule) is produced at SLP

WBJEE Biology Previous Year (2009) - Question 30

Feedback inhibition of enzymes is affected by which of the following

Detailed Solution for WBJEE Biology Previous Year (2009) - Question 30

Feedback inhibition is affected by end products

WBJEE Biology Previous Year (2009) - Question 31

The discovery of gibberellins is related with one of the following :

Detailed Solution for WBJEE Biology Previous Year (2009) - Question 31

Bakanae disease of rice/foolish seedling disease, discovered in Japan

WBJEE Biology Previous Year (2009) - Question 32

Ornithophily refers to the pollination by which of the following :

Detailed Solution for WBJEE Biology Previous Year (2009) - Question 32

Pollination by bird is called ornithophily

WBJEE Biology Previous Year (2009) - Question 33

Which f the following is an example of man-made ecosystem?

Detailed Solution for WBJEE Biology Previous Year (2009) - Question 33

Aquarium is man-made ecosystem

WBJEE Biology Previous Year (2009) - Question 34

. Respiratory enzymes are present in the following organelle :

Detailed Solution for WBJEE Biology Previous Year (2009) - Question 34

Mitochondrion has respiratory enzymes for food oxidation

WBJEE Biology Previous Year (2009) - Question 35

Pellagra is caused due to deficiency of the vitamin :

Detailed Solution for WBJEE Biology Previous Year (2009) - Question 35

Pellagra is caused by Niacin (nicotinic acid)

WBJEE Biology Previous Year (2009) - Question 36

Which one of the following Leucocytes transforms into macrophages?

Detailed Solution for WBJEE Biology Previous Year (2009) - Question 36

Monocytes transforms to form macrophages

WBJEE Biology Previous Year (2009) - Question 37

Mention the “Incubation Period” of P.vivax :

Detailed Solution for WBJEE Biology Previous Year (2009) - Question 37

Incubation period of P.vivax is 10-14 days

WBJEE Biology Previous Year (2009) - Question 38

The specific region of Hypothalamus, responsible for physiological sweat secretion, is

Detailed Solution for WBJEE Biology Previous Year (2009) - Question 38

Paraventricular nucleus of hypothalamus is related to sweat secretion

WBJEE Biology Previous Year (2009) - Question 39

The duration of cardiac cycle is :

Detailed Solution for WBJEE Biology Previous Year (2009) - Question 39

The duration of cardiac cycle is 0.8 sec

WBJEE Biology Previous Year (2009) - Question 40

. The intensity levels of whispering noise is :

WBJEE Biology Previous Year (2009) - Question 41

The wildlife Protection Act was introduced in :

WBJEE Biology Previous Year (2009) - Question 42

In honey the percentage of Maltose and other sugar is

WBJEE Biology Previous Year (2009) - Question 43

Identify the correct type of food chain :
dead animal → blow fly maggots → common frog → snake

Detailed Solution for WBJEE Biology Previous Year (2009) - Question 43

It is Detritus food chain. Always starts from dead organic material.

WBJEE Biology Previous Year (2009) - Question 44

Which is not applicable to the Biological species concept ?

Detailed Solution for WBJEE Biology Previous Year (2009) - Question 44

Hybridization is not applicable to the bilogical species concept

WBJEE Biology Previous Year (2009) - Question 45

DNA sequence that code for protein are known as —

Detailed Solution for WBJEE Biology Previous Year (2009) - Question 45

Exon is a part of DNA which codes for a protein

WBJEE Biology Previous Year (2009) - Question 46

Which one of the following is a systemic insecticide ?

Detailed Solution for WBJEE Biology Previous Year (2009) - Question 46

The systemic insecticide is parathion

WBJEE Biology Previous Year (2009) - Question 47

The resolving power of a compound microscope will increase with —

Detailed Solution for WBJEE Biology Previous Year (2009) - Question 47

Decrease in wavelength of light and increase in numerical aperature is responsible.

WBJEE Biology Previous Year (2009) - Question 48

Osteomalacia is a disease caused by the deficiency of —

Detailed Solution for WBJEE Biology Previous Year (2009) - Question 48

Osteomalacia is caused by calciferol deficiency in body

WBJEE Biology Previous Year (2009) - Question 49

Which is the correct sequence of arrangement of types of W.B.C. in decreasing order in terms of number per mm3 of human blood ?

WBJEE Biology Previous Year (2009) - Question 50

Cells in G0 phase of cell cycle

Detailed Solution for WBJEE Biology Previous Year (2009) - Question 50

Go is the arrest / suspended phase of cell cycle.

WBJEE Biology Previous Year (2009) - Question 51

Choose the correct non-protein amino acid

WBJEE Biology Previous Year (2009) - Question 52

Seedless Banana is

Detailed Solution for WBJEE Biology Previous Year (2009) - Question 52

It is formed by parthenocarpy (i.e. without fertilization)

WBJEE Biology Previous Year (2009) - Question 53

The major site of protein breakdown to form free amino acids is in the

WBJEE Biology Previous Year (2009) - Question 54

Collagen is a

Detailed Solution for WBJEE Biology Previous Year (2009) - Question 54

Collagen is scleroprotein that requires vit-C for synthesis

WBJEE Biology Previous Year (2009) - Question 55

The “Repeating Unit” of glycogen is

Detailed Solution for WBJEE Biology Previous Year (2009) - Question 55

Glycogen is a homopolymer of glucose

WBJEE Biology Previous Year (2009) - Question 56

Graham’s Law is correlated with

Detailed Solution for WBJEE Biology Previous Year (2009) - Question 56

Graham’s law of diffusion, rate of diffusion 

WBJEE Biology Previous Year (2009) - Question 57

Which of the following does not act as a neurotransmitter ?

Detailed Solution for WBJEE Biology Previous Year (2009) - Question 57

Tyrosine is not a neurotransmitter, it is an amono acid.

WBJEE Biology Previous Year (2009) - Question 58

The generation of excitation-contraction coupling involves all the following events except :

Detailed Solution for WBJEE Biology Previous Year (2009) - Question 58

During generation of excitation contraction coupling calcium is attached to troponin

WBJEE Biology Previous Year (2009) - Question 59

In AIDS, HIV kills :

Detailed Solution for WBJEE Biology Previous Year (2009) - Question 59

HIV kills helper T cells.

WBJEE Biology Previous Year (2009) - Question 60

Generally artificial Pacemaker consists of one battery made up of

Detailed Solution for WBJEE Biology Previous Year (2009) - Question 60

Lithium halide battery is used in artificial pacemaker

WBJEE Biology Previous Year (2009) - Question 61

Goitre can occur as a consequence of all the following except :

Detailed Solution for WBJEE Biology Previous Year (2009) - Question 61

Excessive intake of exogenous thyroxine will not produce the symptoms of Goitre.

WBJEE Biology Previous Year (2009) - Question 62

Pernicious anaemia results due to deficiency of

Detailed Solution for WBJEE Biology Previous Year (2009) - Question 62

Pernicious anaemia is caused by deficiency of vit B12 or Cyanocobalamine

WBJEE Biology Previous Year (2009) - Question 63

Which of the following substances yield less than 4 Kcal/mol when its phosphate bond is hydrolysed

WBJEE Biology Previous Year (2009) - Question 64

The Genetic deficiency of ADH-receptor leads to

Detailed Solution for WBJEE Biology Previous Year (2009) - Question 64

Nephrogenic diabetes is due to genetic deficiency of ADH-receptor linked to x-chromosome.

WBJEE Biology Previous Year (2009) - Question 65

Out of A-T, G-C pairing, bases of DNA may exist in alternate valency state owing to arrangement called

Detailed Solution for WBJEE Biology Previous Year (2009) - Question 65

Tautomers are isomers of organic compund that readily interconvert by a chemical reaction. Commonly this reaction result in the formed migration of a H-atom or proton.

WBJEE Biology Previous Year (2009) - Question 66

Cellular Totipotency was first demonstrated by

WBJEE Biology Previous Year (2009) - Question 67

Molecular scissors which cut DNA at specific site is

Detailed Solution for WBJEE Biology Previous Year (2009) - Question 67

Restriction endonuclease is used to cut DNA at specific site (molecular scissor).

WBJEE Biology Previous Year (2009) - Question 68

SO2 pollution is indicated by

Detailed Solution for WBJEE Biology Previous Year (2009) - Question 68

Lichon is the indicator of SO2 pollution

WBJEE Biology Previous Year (2009) - Question 69

Sporopollenin is chemically

Detailed Solution for WBJEE Biology Previous Year (2009) - Question 69

Sporopollenin is chemically a fatty substance that persits in fossil state.

WBJEE Biology Previous Year (2009) - Question 70

During replication of DNA, Okazaki fragments are formed in the direction of :

Detailed Solution for WBJEE Biology Previous Year (2009) - Question 70

Okazaki fragments are formed in the direction of 5′ → 3′ , they join after wards.

WBJEE Biology Previous Year (2009) - Question 71

The chemical nature of chromatin is as follows :

Detailed Solution for WBJEE Biology Previous Year (2009) - Question 71

Chromatin = nucleic acid + histone proteins + non - histone proteins

WBJEE Biology Previous Year (2009) - Question 72

Choose the minor carp from the following :

Detailed Solution for WBJEE Biology Previous Year (2009) - Question 72

Laveo bata is a minor carp., it size is smaller and growth rate slower

WBJEE Biology Previous Year (2009) - Question 73

The scientific name of Asian tiger mosquito :

Detailed Solution for WBJEE Biology Previous Year (2009) - Question 73

Aedes albopictus is an Asian tiger mosquito.

WBJEE Biology Previous Year (2009) - Question 74

The size of filtration slits of Glomerulus :

Detailed Solution for WBJEE Biology Previous Year (2009) - Question 74

Average size of filteration slit of glomerulus is 25 nm.

WBJEE Biology Previous Year (2009) - Question 75

Ornithorhynchus is an example of :

Detailed Solution for WBJEE Biology Previous Year (2009) - Question 75

Ornithorhynchus (Duckbilled platypus) is monotreme.

WBJEE Biology Previous Year (2009) - Question 76

Scirpophage incertulus is an example of :

Detailed Solution for WBJEE Biology Previous Year (2009) - Question 76

Scrirpophaga incertelus is a monophagus pest that feeds on a single plant.

WBJEE Biology Previous Year (2009) - Question 77

Which one of the following ancestors of man first time showed bipedal movement ?

WBJEE Biology Previous Year (2009) - Question 78

Trophic levels in ecosystem is formed by :

Detailed Solution for WBJEE Biology Previous Year (2009) - Question 78

Trophic levels in ecosystem is formed by organisms linked in the food chain

WBJEE Biology Previous Year (2009) - Question 79

The life span of Honey bee drone is :

WBJEE Biology Previous Year (2009) - Question 80

Name of a gaseous plant hormone is

Detailed Solution for WBJEE Biology Previous Year (2009) - Question 80

Ethylene is a gaseous plant hormone that acts for ripening.

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