Standard environmental science matching: SO2 oxidation causes acid rain; HOCl photodissociation leads to ozone depletion; CaCO3 reacts with acid rain; NO2 dissociation is key in photochemical smog formation.
Q101mcq
When the centromere is situated in the middle of two equal arms of chromosomes, the chromosome is referred as:
a.
Sub-metacentric
b.
Acrocentric
c.
Metacentric
Correct Answer
d.
Telocentric
Step-by-Step AI Explanation
Verified Method
In metacentric chromosomes, the centromere is at the middle, resulting in two equal arms.
Q102mcq
In the equation GPP - R = NPP, R represents:
a.
Environment factor
b.
Respiration losses
Correct Answer
c.
Radiant energy
d.
Retardation factor
Step-by-Step AI Explanation
Verified Method
In ecosystem productivity formulas, GPP (Gross Primary Productivity) minus R (Respiration losses) equals NPP (Net Primary Productivity).
Q104mcq
Which of the following stages of meiosis involves division of centromere?
a.
Anaphase II
Correct Answer
b.
Telophase II
c.
Metaphase I
d.
Metaphase II
Step-by-Step AI Explanation
Verified Method
During Anaphase II of meiosis, the centromeres split and sister chromatids separate.
Q104mcq
Which of the following stages of meiosis involves division of centromere?
a.
Anaphase II
Correct Answer
b.
Telophase II
c.
Metaphase I
d.
Metaphase II
Step-by-Step AI Explanation
Verified Method
During Anaphase II, the centromeres split and sister chromatids separate.
Q105mcq
Match List - I with List - II: (a) Cristae, (b) Thylakoids, (c) Centromere, (d) Cisternae with (i) Primary constriction in chromosome, (ii) Disc-shaped sacs in Golgi apparatus, (iii) Infoldings in mitochondria, (iv) Flattened membranous sacs in stroma of plastids.
a.
(1) (iii)(iv)(i)(ii)
Correct Answer
b.
(2) (ii)(iii)(iv)(i)
c.
(3) (iv)(iii)(ii)(i)
d.
(4) (i)(iv)(iii)(ii)
Step-by-Step AI Explanation
Verified Method
Cristae are infoldings in mitochondria, Thylakoids are sacs in plastids, Centromere is the primary constriction, Cisternae are sacs in Golgi apparatus.
Q106mcq
Diadelphous stamens are found in:
a.
Pea
Correct Answer
b.
China rose and citrus
c.
China rose
d.
Citrus
Step-by-Step AI Explanation
Verified Method
Diadelphous stamens (two bundles, one fused and one free) are characteristic of the family Fabaceae, seen in Pea.
Q106mcq
Diadelphous stamens are found in :
a.
Pea
Correct Answer
b.
China rose and citrus
c.
China rose
d.
Citrus
Step-by-Step AI Explanation
Verified Method
Diadelphous condition (stamens in two bundles) is characteristic of the Fabaceae family, such as pea.
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The term used for transfer of pollen grains from anthers of one plant to stigma of a different plant which, during pollination, brings genetically different types of pollen grains to stigma, is:
a.
Chasmogamy
b.
Cleistogamy
c.
Xenogamy
d.
Geitonogamy
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The term used for transfer of pollen grains from anthers of one plant to stigma of a different plant which, during pollination, brings genetically different types of pollen grains to stigma, is :
a.
Chasmogamy
b.
Cleistogamy
c.
Xenogamy
d.
Geitonogamy
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Match List - I with List - II: (a) Protoplast fusion, (b) Plant tissue culture, (c) Meristem culture, (d) Micropropagation with (i) Totipotency, (ii) Pomato, (iii) Somaclones, (iv) Virus free plants.
a.
(1) (iii)(iv)(i)(ii)
b.
(2) (iv)(iii)(ii)(i)
c.
(3) (iii)(iv)(ii)(i)
d.
(4) (ii)(i)(iv)(iii)
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Match List - I with List - II.
(a) Lenticels (i) Phellogen
(b) Cork cambium (ii) Suberin deposition
(c) Secondary cortex (iii) Exchange of gases
(d) Cork (iv) Phelloderm
Choose the correct answer from the options given below.
a.
(a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)
b.
(a)-(iv), (b)-(ii), (c)-(i), (d)-(iii)
c.
(a)-(iv), (b)-(i), (c)-(iii), (d)-(ii)
d.
(a)-(iii), (b)-(i), (c)-(iv), (d)-(ii)
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Match List - I with List - II.
(a) Cohesion (i) More attraction in liquid phase
(b) Adhesion (ii) Mutual attraction among water molecules
(c) Surface tension (iii) Water loss in liquid phase
(d) Guttation (iv) Attraction towards polar surfaces
Choose the correct answer from the options given below.
a.
(a)-(iii), (b)-(i), (c)-(iv), (d)-(ii)
b.
(a)-(ii), (b)-(i), (c)-(iv), (d)-(iii)
c.
(a)-(ii), (b)-(iv), (c)-(i), (d)-(iii)
d.
(a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)
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Match Column - I with Column - II.
(a) Nitrococcus (i) Denitrification
(b) Rhizobium (ii) Conversion of ammonia to nitrite
(c) Thiobacillus (iii) Conversion of nitrite to nitrate
(d) Nitrobacter (iv) Conversion of atmospheric nitrogen to ammonia
Choose the correct answer from options given below.
a.
(a)-(iii), (b)-(i), (c)-(iv), (d)-(ii)
b.
(a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)
c.
(a)-(ii), (b)-(iv), (c)-(i), (d)-(iii)
d.
(a)-(i), (b)-(ii), (c)-(iii), (d)-(iv)
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Plasmid pBR322 has PstI restriction enzyme site within gene ampR that confers ampicillin resistance. If this enzyme is used for inserting a gene for β-galactoside production and the recombinant plasmid is inserted in an E.coli strain:
a.
it will lead to lysis of host cell.
b.
it will be able to produce a novel protein with dual ability.
c.
it will not be able to confer ampicillin resistance to the host cell.
d.
the transformed cells will have the ability to resist ampicillin as well as produce β-galactoside.
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Plasmid pBR322 has PstI restriction enzyme site within gene ampR that confers ampicillin resistance. If this enzyme is used for inserting a gene for β-galactoside production and the recombinant plasmid is inserted in an E.coli strain
a.
it will lead to lysis of host cell.
b.
it will be able to produce a novel protein with dual ability.
c.
it will not be able to confer ampicillin resistance to the host cell.
d.
the transformed cells will have the ability to resist ampicillin as well as produce β-galactoside.
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Match List - I with List - II. List I: (a) S phase, (b) G2 phase, (c) Quiescent stage, (d) G1 phase. List II: (i) Proteins are synthesized, (ii) Inactive phase, (iii) Interval between mitosis and initiation of DNA replication, (iv) DNA replication.
a.
(1)(iv)(i)(ii)(iii)
b.
(2)(ii)(iv)(iii)(i)
c.
(3)(iii)(ii)(i)(iv)
d.
(4)(iv)(ii)(iii)(i)
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Now a days it is possible to detect the mutated gene causing cancer by allowing radioactive probe to hybridise its complimentary DNA in a clone of cells, followed by its detection using autoradiography because :
a.
mutated gene does not appear on a photographic film as the probe has no complementarity with it.
b.
mutated gene does not appear on photographic film as the probe has complementarity with it.
c.
mutated gene partially appears on a photographic film.
d.
mutated gene completely and clearly appears on a photographic film.
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Match List - I with List - II. (a) Aspergillus niger, (b) Acetobacter aceti, (c) Clostridium butylicum, (d) Lactobacillus. List II: (i) Acetic Acid, (ii) Lactic Acid, (iii) Citric Acid, (iv) Butyric Acid.
a.
(1)(ii)(iii)(i)(iv)
b.
(2)(iv)(ii)(i)(iii)
c.
(3)(iii)(i)(iv)(ii)
d.
(4)(i)(ii)(iii)(iv)
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Match List - I with List - II.
(a) Aspergillus niger (i) Acetic Acid
(b) Acetobacter aceti (ii) Lactic Acid
(c) Clostridium butylicum (iii) Citric Acid
(d) Lactobacillus (iv) Butyric Acid
a.
(1)(ii)(iii)(i)(iv)
b.
(2)(iv)(ii)(i)(iii)
c.
(3)(iii)(i)(iv)(ii)
d.
(4)(i)(ii)(iii)(iv)
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Veneral diseases can spread through:
(a) Using sterile needles
(b) Transfusion of blood from infected person
(c) Infected mother to foetus
(d) Kissing
(e) Inheritance
Choose the correct answer from the options given below.
a.
(b) and (c) only
b.
(a) and (c) only
c.
(a), (b) and (c) only
d.
(b), (c) and (d) only
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With regard to insulin choose correct options.
(a) C-peptide is not present in mature insulin.
(b) The insulin produced by rDNA technology has C-peptide.
(c) The pro-insulin has C-peptide.
(d) A-peptide and B-peptide of insulin are interconnected by disulphide bridges.
Choose the correct answer from the options given below.
a.
(a), (c) and (d) only
b.
(a) and (d) only
c.
(b) and (d) only
d.
(b) and (c) only
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Match List - I with List - II.
(a) Metamerism (i) Coelenterata
(b) Canal system (ii) Ctenophora
(c) Comb plates (iii) Annelida
(d) Cnidoblasts (iv) Porifera
a.
(1)(iii)(iv)(ii)(i)
b.
(2)(iv)(i)(ii)(iii)
c.
(3)(iv)(iii)(i)(ii)
d.
(4)(iii)(iv)(i)(ii)
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Match the following: (a) Physalia (i) Pearl oyster (b) Limulus (ii) Portuguese Man of War (c) Ancylostoma (iii) Living fossil (d) Pinctada (iv) Hookworm
a.
(1)(ii)(iii)(iv)(i)
b.
(2)(i)(iv)(iii)(ii)
c.
(3)(ii)(iii)(i)(iv)
d.
(4)(iv)(i)(iii)(ii)
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Read the following statements: (a) Metagenesis is observed in Helminths. (b) Echinoderms are triploblastic and coelomate animals. (c) Round worms have organ-system level of body organization. (d) Comb plates present in ctenophores help in digestion. (e) Water vascular system is characteristic of Echinoderms. Choose the correct answer from the options given below.
a.
(a), (d) and (e) are correct
b.
(b), (c) and (e) are correct
c.
(c), (d) and (e) are correct
d.
(a), (b) and (c) are correct
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The fruit fly has 8 chromosomes (2n) in each cell. During interphase of Mitosis if the number of chromosomes at G1 phase is 8, what would be the number of chromosomes after S phase?
a.
4
b.
32
c.
8
d.
16
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Match List - I with List - II: (a) Vaults (i) Entry of sperm through Cervix is blocked (b) IUDs (ii) Removal of Vas deferens (c) Vasectomy (iii) Phagocytosis of sperms within the Uterus (d) Tubectomy (iv) Removal of fallopian tube
a.
(1)(ii)(iv)(iii)(i)
b.
(2)(iii)(i)(iv)(ii)
c.
(3)(iv)(ii)(i)(iii)
d.
(4)(i)(iii)(ii)(iv)
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For effective treatment of the disease, early diagnosis and understanding its pathophysiology is very important. Which of the following molecular diagnostic techniques is very useful for early detection?
a.
ELISA Technique
b.
Hybridization Technique
c.
Western Blotting Technique
d.
Southern Blotting Technique
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During the process of gene amplification using PCR, if very high temperature is not maintained in the beginning, then which of the following steps of PCR will be affected first?
a.
Denaturation
b.
Ligation
c.
Annealing
d.
Extension
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During the process of gene amplification using PCR, if very high temperature is not maintained in the beginning, then which of the following steps of PCR will be affected first ?
a.
Denaturation
b.
Ligation
c.
Annealing
d.
Extension
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Statement I : The codon ‘AUG’ codes for methionine and phenylalanine. Statement II : ‘AAA’ and ‘AAG’ both codons code for the amino acid lysine. In the light of the above statements, choose the correct answer from the options given below.
a.
Statement I is correct but Statement II is false
b.
Statement I is incorrect but Statement II is true
c.
Both Statement I and Statement II are true
d.
Both Statement I and Statement II are false
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Following are the statements with reference to ‘lipids’. (a) Lipids having only single bonds are called unsaturated fatty acids. (b) Lecithin is a phospholipid. (c) Trihydroxy propane is glycerol. (d) Palmitic acid has 20 carbon atoms including carboxyl carbon. (e) Arachidonic acid has 16 carbon atoms. Choose the correct answer from the options given below.
a.
(b) and (c) only
b.
(b) and (e) only
c.
(a) and (b) only
d.
(c) and (d) only
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Following are the statements about prostomium of earthworm. (a) It serves as a covering for mouth. (b) It helps to open cracks in the soil into which it can crawl. (c) It is one of the sensory structures. (d) It is the first body segment. Choose the correct answer from the options given below.
a.
(a), (b), (c) and (d) are correct
b.
(b) and (c) are correct
c.
(a), (b) and (c) are correct
d.
(a), (b) and (d) are correct
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Match List - I with List - II. (a) Allen's Rule (i) Kangaroo rat (b) Physiological adaptation (ii) Desert lizard (c) Behavioural adaptation (iii) Marine fish at depth (d) Biochemical adaptation (iv) Polar seal
a.
(iv)(i)(ii)(iii)
b.
(iv)(iii)(ii)(i)
c.
(iv)(ii)(iii)(i)
d.
(iv)(i)(iii)(ii)
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Match List - I with List - II. (a) Scapula (i) Cartilaginous joints (b) Cranium (ii) Flat bone (c) Sternum (iii) Fibrous joints (d) Vertebral column (iv) Triangular flat bone
a.
(iv)(ii)(iii)(i)
b.
(iv)(iii)(ii)(i)
c.
(i)(iii)(ii)(iv)
d.
(ii)(iii)(iv)(i)
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Match List - I with List - II.
(a) Scapula (i) Cartilaginous joints
(b) Cranium (ii) Flat bone
(c) Sternum (iii) Fibrous joints
(d) Vertebral column (iv) Triangular flat bone
a.
(1) (iv)(ii)(iii)(i)
b.
(2) (iv)(iii)(ii)(i)
c.
(3) (i)(iii)(ii)(iv)
d.
(4) (ii)(iii)(iv)(i)
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Assertion (A) : A person goes to high altitude and experiences ‘altitude sickness’ with symptoms like breathing difficulty and heart palpitations. Reason (R) : Due to low atmospheric pressure at high altitude, the body does not get sufficient oxygen. In the light of the above statements, choose the correct answer from the options given below.
a.
(A) is true but (R) is false
b.
(A) is false but (R) is true
c.
Both (A) and (R) are true and (R) is the correct explanation of (A)
d.
Both (A) and (R) are true but (R) is not the correct explanation of (A)
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Assertion (A) : A person goes to high altitude and experiences ‘altitude sickness’ with symptoms like breathing difficulty and heart palpitations.
Reason (R) : Due to low atmospheric pressure at high altitude, the body does not get sufficient oxygen.
In the light of the above statements, choose the correct answer from the options given below.
a.
(1) (A) is true but (R) is false
b.
(2) (A) is false but (R) is true
c.
(3) Both (A) and (R) are true and (R) is the correct explanation of (A)
d.
(4) Both (A) and (R) are true but (R) is not the correct explanation of (A)
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Match List - I with List - II.
(a) Filariasis (i) Haemophilus influenzae
(b) Amoebiasis (ii) Trichophyton
(c) Pneumonia (iii) Wuchereria bancrofti
(d) Ringworm (iv) Entamoeba histolytica
a.
(1) (i)(ii)(iv)(iii)
b.
(2) (ii)(iii)(i)(iv)
c.
(3) (iv)(i)(iii)(ii)
d.
(4) (iii)(iv)(i)(ii)
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Identify the types of cell junctions that help to stop the leakage of the substances across a tissue and facilitation of communication with neighbouring cells via rapid transfer of ions and molecules.
a.
(1) Adhering junctions and Tight junctions, respectively.
b.
(2) Adhering junctions and Gap junctions, respectively.
c.
(3) Gap junctions and Adhering junctions, respectively.
d.
(4) Tight junctions and Gap junctions, respectively.
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During muscular contraction which of the following events occur?
(a) ‘H’ zone disappears
(b) ‘A’ band widens
(c) ‘I’ band reduces in width
(d) Myosine hydrolyzes ATP, releasing the ADP and Pi
(e) Z-lines attached to actins are pulled inwards
Choose the correct answer from the options given below.
a.
(1) (b), (c), (d), (e) only
b.
(2) (b), (d), (e), (a) only
c.
(3) (a), (c), (d), (e) only
d.
(4) (a), (b), (c), (d) only
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Match List - I with List - II.
(a) Adaptive radiation (i) Selection of resistant varieties due to excessive use of herbicides and pesticides
(b) Convergent evolution (ii) Bones of forelimbs in Man and Whale
(c) Divergent evolution (iii) Wings of Butterfly and Bird
(d) Evolution by anthropogenic action (iv) Darwin Finches
a.
(1) (ii)(i)(iv)(iii)
b.
(2) (i)(iv)(iii)(ii)
c.
(3) (iv)(iii)(ii)(i)
d.
(4) (iii)(ii)(i)(iv)
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