Botany - Section A
UV rays are highly injurious to living organisms as:
1. they are a part of invisibleelectromagnetic spectrum
2.they cannot be stopped by atmospheric gases
3.they are preferentially absorbed by DNA and proteins
4.they cause dissociation of atmospheric oxygen
When a threatened plant needs urgent measures to save it from extinction, the desirable approach is
1. in-situ conservation
2. ex-situ conservation
The greatest biodiversity on the earth is found in
1. African grasslands
2. Amazonian rain forest in SouthAmerica
3.Western Ghats in India
4.Nile delta in Egypt
The accumulation of herbivore biomass in an ecosystem is an example of
1. biogeochemical cycles
3. net primary productivity
4. secondary productivity
What is the percentage of photosynthetic active radiation [PAR] in the incident solar radiation?
1. 100 %
Given below is a simplified model of phosphorus cycling in a terrestrial ecosystem with
four blanks (A-D). Identify the blanks.
The highest number of species in the world is represented by
Which one of the following have the highest number of species in nature?
Which one of the following shows maximum genetic diversity in India?
Chipko movement was launched for the protection of
4. wet lands
A large quantity of urban sewage is drained to nearby village river. Which among the given conditions would happen after mixing of sewage into the river?
(i) Biochemical oxygen demand (BOD) of receiving water body increases.
(ii) Dissolved oxygen of receiving water body decreases.
(iii) It will not cause mortality among fishes and other aquatic creatures
(iv) It will lead to nutrient enrichment of receiving water body.
(1) (i), (ii) and (iii)
(2) (i), (ii) and (iv)
(3) (ii) and (iii)
(4) (iii) and (iv)
The total number of biodiversity hotspots in the world are
The phosphorus cycle differs from the carbon cycle in that:
a. Phosphorus does not enter living organisms, whereas carbon does.
b. The phosphorus cycle does not include a gaseous phase, whereas the carbon cycle does.
c. The phosphorus cycle includes a solid phase, whereas the carbon cycle does not
d. The primary reservoir of the phosphorus cycle is the atmosphere, whereas the primary reservoir for the carbon cycle is in rock.
Human can get homeostasis through:
(1) Only physiological means
(2) Only physical means
(3) Both physiological and physical means
(4) Neither physiological nor physical means
In the process of decomposition ‘catabolism’ is performed by-
3. Bacteria and fungi
Which of the following statement is incorrect?
1. All the steps in decomposition operate simultaneously on the humus.
2. Humus is an accumulated dark coloured amorphous substance.
3. Humus is highly resistant to microbial action and undergoes decomposition at an extremely slow rate.
4. Being colloidal in nature humus serves as a reservoir of nutrients.
Which of the following does not affect rate of decomposition?
1. Substrate composition
2. Soil moisture
3. Temperature of soil
Xerarch and Hydrarch succession leads to respective climax communities as follows-
1. Xeric and hydric
2. Hydric and xeric
3. Mesic and mesic
4. Xeric and mesic
Under special circumstances which of the following affects population density most?
Parasites often have one or two intermediate hosts or vectors
1. To make a life cycle more complicated
2. To facilitate parasitization of its primary host
3. To cause advanced life cycle
4. To infect a broad range of organisms
1. Complex life cycle
2. Complex anatomical and morphological features
3. Less emphasis on Reproductive potential
4. All of these
Endoparasites have a complex life cycle
1. Because of extreme morphological adaptations
2. Because of extreme specialization.
3. Because of extreme anatomical adaptation
4. Because of less reproductive potential
1. An intimate mutualistic relationship
2. Between fungus and algae
3. Both 1 and 2
4. Confers benefit to one
Plants don't need the help of animals
1. For pollination
2. For dispersal of seeds
3. For both 1 and 2
4. For nutrient absorption
Sexual deceit is
1. All orchid employ it
2. Leaf resembles female bees in color size and markings
3. Male bee pseudocopulation the leaf
4. This male takes away pollen with itself and then goes to another flower for pseudocopulation will shed pollens there
Biodiversity, this term
(1) Was given by Edward Wilson
(2) Was popularized by Edward Wilson
(3) Was given by Paul Ehrlich
(4) Was popularized by Paul Ehrlich
According to Rivet Popper Hypothesis, which of the following is not correct?
1. Airplane: ecosystem
2. Rivets: species
3. Popping a rivet: causing a species to become extinct
4. Flight safety: number of species
Which of the following is an intangible benefits obtained from biodiversity?
(1) Aesthetic Pleasure walking through thick woods
(2) Watching spring flowers in full bloom
(3) Waking up to a Bulbul's song in the morning
(4) All of these
The act to control environmental pollution is passed by Government of India is
(1) Environment Pollution Act-1981
(2) Environment Pollution Act-1986
(3) Environment Protection Act-1986
(4) Environment Protection Act-1981
Which of the following is wrong?
(1) Delhi leads the country in its level of air pollution
(2) Delhi has more cars than the states of Gujrat and West Bengal put together
(3) In 1990s, Delhi ranked fourth among the 41 most polluted cities of the world
(4) PIL was filed in High court against the Air pollution in Delhi
The prime contaminants of sewage water which act as plant nutrient are
(1) Nitrates and Phosphates
(3) Nitrates, DDT
(4) Cadmium and DDT
The accidental leakage of nuclear energy occurred in
(1) Three mile Island
(2) Chernobyl Incident
(4) Both A and B
Which of the following is not an outcome of deforestation?
(1) Enhanced CO2 concentration
(2) Disturbed hydrologic cycles
(3) Loss of Biodiversity, soil erosion
(4) Soil salinity
(1) Garhwal Himalayas
(2) In 1978
(3) In 1731, by Amrita Devi
(4) Both A and C
Ecology is basically concerned with four levels of biological organization, which one of the following is
1. Population Ecosystem Biome Landscape.
2. Communities Population Ecosystem Biome.
3. Organisms Population Communities Biome.
4. Species Ecosystem Communities Biome.
Botany - Section B
Find incorrect match
1. Electron staticprecipitator – Removes 99% particulate matter.
2. Scrubber – Remove SO2
3. Catalytic converter – Non metalic catalyst.
4. CNG – Burns efficiently.
Introduction of alien species into new area possess a threat to extinction of indigenous species due to
1. Their high nutrient requirement
2. Their symbiotic relationship
3. Absence of its natural predator
4. More intraspecific competition
1. Includes cryopreservation as well as sacred groves outside natural habitat
2. Protects whole ecosystem
3. Includes hot spots as well as wildlife safari parks
4. More than one option is correct
Mark the correct option (with respect to biodiversity hot spots)
1. Ex-situ conservation
2. Cover more than 2% of the earth's land area
3. Regions with accelerated habitat loss
4. High frequency of ubiquitous species
Sacred groves and zoological parks help in
1. In-situ and ex-situ conservation respectively
2. Ex-situ and in-situconservation respectively
3. In-situconservation only
4. Ex-situconservation only
Warm blooded animals living in colder areas have shorter extremities than the animals of warmer areas is explained by
1. Allen's rule
2. Bergman's rule
3. Gloger's rule
4. Rensch's rule
Find the odd one out with respect to population interaction where at least one individual is benefitted.
Many species of small plants (herbs and shrubs) growing in forests are adapted to photosynthesise optimally under very low light conditions because
1. They take more water from soil
2. Light is a limiting factor
3. They are constantly overshadowed by tall canopied trees
4. Availability of light on land is not linked that of temperature
Choose the odd one out with respect to succession
1. Succession and evolution are parallel processes
2. In abandon farmlands, primary succession occurs
3. Involves changes at every trophic level
4. Generally shows a trend from xeric to mesic coditions
Amount of living material present in different trophic levels at a given time is called
2. Standing stage
3. Standing crop
4. Standing quality
Select the correct statement for Detritus Food Chain (DFC)
1. Sun is the only source of energy
2. These systems are more productive than systems dominated by GFC
3. It is composed of a long chain of decomposer organisms
4. Tropical Rain forests are not dependent on DFC
The trophic level of an herbivore is
Choose the odd one out with respect to ozone depletion in the stratosphere
1. UV rays have the ability to both degrade as well as the form ozone layer
2. UV rays are depleting the good ozone in the troposphere
3. CFC's are disturbing the balance of ozone equilibrium
4. UV-B rays cause inflammation of cornea called colour blindness
Find the correct set of the relative contributions of greenhouse gases to global warming.
(A) (B) (C) (D)
1. 20% 14% 60% 6%
2. 14% 60% 6% 20%
3. 60% 20% 14% 6%
4. 20% 6% 60% 14%
Select the correct option with respect to following graph :-
Chemistry - Section A
Which of the following is the sweetest sugar?
Which of the following is correct statement ?
1. Starch is a polymer ofa-glucose
2. Amylose is a component of celulose
3. Proteins are composed of only one type of amino acid
4. In cyclic structure of fructose, there are 6 carbons and one oxygen atom
Terylene is a condensation polymer of ethylene glycol and
1. Benzoic acid
2. Phthalic acid
3. Salicylic acid
4. Terephthalic acid
Melamine plastic crockery is a copolymer of:
1. HCHO and melamine
2. HCHO and ethylene
3. Melamine and ethylene
4. none of the above
The polymer that can be classified as polyster polymer is :
Glyptal or alkyd is polymer of:
1. Ethylene glycol and phthalic acid.
2. Ethylene and phthalic acid.
3. Phthalic acid and acetylene.
4. None of the above.
The example of a thermosetting polymer among the following options is :
Buna rubber is a polymer of:
2. Vinyl acetate.
4. None of the above.
The human body does not produce
Which one of the following is employed as a tranquilizer drug?
Which type of amino acid is lysine ?
1.b -amino acid
Proteins mainly contain:
(1) C, H, O and N
(2) only C and H
(3) C, H and O
(4) N and H
The main structural feature of protein is:
(1) the ester linkage
(2) the ether linkage
(3) the peptide linkage
(4) all of these
The complementary base of adenine in one strand to that in the otherstrand of DNA is:
One of the essential α-amino acids is:
Adenosine is an example of:
(3) purine base
(4) pyrimidine base
Terylene is a:
(4) Long chain hydrocarbon
Chemical name of melamine is:
Which one of the following pairs is not correctly matched?
1. Terylene—condensation polymer of terephthalic acid and ethylene glycol
2. Teflon—thermally stable cross-linked polymer of phenol and formaldehyde
3. Perspex—a homopolymer of methyl methacrylate
4. Synthetic rubber —a copolymer of butadiene and styrene
Which of the following is a step-growth polymer?
Which of the following drugs is a tranquilizer and sedative?
Various phenol derivatives, tincture of iodine (2-3% I2 in water/alcohol) and some dyes like methylene blue are :
The mixture of chloroxylenol and terpineol acts as-
In a protein molecule, various amino acids are linked together by
(1) b-glycosidic bond
(2) peptide bond
(3) dative bond
(4) a-glycosidic bond
Bithional is generally added to the soaps as an additive to function as a/an
3. buffering agent
Which of the following statements is false?
1. Artificial silk is derived from cellulose
2. Nylon-66 is an example of elastomer
3. The repeat unit in natural rubber is isoprene
4. Both starch and cellulose are polymers of glucose
Which one of the following vitamins is water-soluble?
Polymer that can be prepared by condensation polymerization is:
Polymer that contains ester linkage is:
Insulin regulates the metabolism of :
2. Amino acids
An acids among the followingthat acts as vitamin is:
1. Benzoic acid
2. Ascorbic acid
3. Oxalic acid
4. Formic acid
A linkage present in proteins and peptides is:
Which of the following is an elastomer ?
1. Vulcanized rubber
Sulpha drugs are used for :
1. Removing bacteria.
2. Precipitating bacteria.
3. Stopping the growth of bacteria.
4. Decreasing the size of bacteria.
The polymer containing strong intermolecular forces, e.g., hydrogen bonding is:
1. Natural rubber
Chemistry - Section B
Match the polymers given in Column-I with their repeating units given in Column-II. Choose the correct option from the codes given below :
An acid that actsas a vitamin is
1. Aspartic acid
2. Glumatic acid
3. Ascorbic acid
4. Saccharic acid
Penicillin was first discovered by:
(1) A. Fleming
(2) Tence and Salke
(3) S.A Waksna
(4) Lewis Pasteur
A substance that can act both as an antiseptic disinfectant is:
The formualtion of dettol contains:
(4) all of these
Treatment of rubber with sulfur -
(4) None of the above.
Terylene is not a :
1. Synthetic fiber
2. Thermosetting plastic
3. Step-growth polymer
4. Condensation polymer
The reaction of concentrated sulphuric acid with carbohydrates is an example of
Which of the following statement is not true about glucose?
(1) It is an aldohexose.
(2) It contains five hydroxyl groups.
(3) It is a reducing sugar.
(4) It is an aldopentose.
The compound that causes general antidepressant action on the central nervous system belongs to the class of
(3) narcotic analgesics
Which of the following molecule is not a drug target in the body?
Veronal and luminal derivatives of barbituric acid acts as
(b) Non-narcotic analgesic
(c) Anti-allergic drugs
(d) Neurologically active drugs
Match the class of compounds given in Column I with their functions given in Column II.
Column I Column II
A. Antagonists 1. Communicate messages between two neurons and that between neurons to muscles.
B. Agonists 2. Bind to the receptor site and inhibit its natural function.
C. Chemical messenger 3. Crucial to the body's communication process.
D. Inhibitors 4. Mimic the natural messenger.
E. Receptors 5. Inhibit the activities of enzymes
Match the correct one:
1) A-2, B-1, C-4, D-5, E-3
2) A-2, B-4, C-1, D-5, E-3
3) A-4, B-2, C-1, D-5, E-3
4) A-2, B-4, C-1, D-3, E-5
Match the classes of drugs are given in Column I with their action given in Column II.
Column I Column II
A. Analgesics 1. Inhibit the growth of microorganisms can be given orally
B. Antiseptics 2. Treatment of stress
C. Antihistamines 3. Applied to inanimate objects
D. Antacids 4.Prevents the interaction of histamine with its receptor
E. Tranquilizers 5. Painkilling effect
F. Antibiotics 6. Applied to diseased skin surfaces
G. Disinfectants 7. Treatment of acidity
Correct order is:
1) A-5 ,B-6, C-4, D-7, E-2 ,F-1 ,G-3
2) A-5, B-6, C-4, D-7, E-1, F-2, G-3
4) A-6, B-5, C-7, D-4, E-2, F-1, G-3
4) A-3, B-5, C-7, D-4, E-2, F-1, G-6
Assertion (A) Receptor proteins show selectivity for one chemicalmessenger over the other.
Reason (R) Chemical messenger binds to the receptor site and inhibitsits natural function.
1. Assertion and reason both are correct statements but reason does not explain assertion.
2. Assertion and reason both are correct and reason explains the assertion.
3. Both assertion and reason are wrong statements.
4. Assertion is the correct statement reason is the wrong statement.
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