1. The anther in transverse section appears to be(a) Diagonal (b) Tetragonal (c) Unilobed(d) Mosaic
2. What are A, B, C and D in this figure? a) A: Thalamus, B: Style, C: Ovary, D: Stigma b) A: Style, B: Ovary, C: Stigma, D: Thalamus c) A: Stigma, B: Style, C: Ovary, D: Thalamus d) A: Ovary, B: Stigma, C: Thalamus, D: Style
3. Tetragonal anther consists ofa) One microsporangia b) Two microsporangia c) Three microsporangia d) Four microsporangia
4. How many microsporangia are there in each lobe of anther?a) One microsporangia b) Two microsporangia c) Three microsporangia d) Four microsporangia
5. Which one amongst the given perform the function of protection in typical microsporangium?(A) Epidermis (B) Endothecium (C) Tapetum (D) Middle layer(a) A and B (b) A and C (c) A and D (d) A, B and D
6. Function performed by the outer three layers of microsporangium?a) Protection to developing pollen b) Provides nourishment to developing pollen c) Helps in the dehiscence of anther to release pollen d) Both (a) and (c)
7. Formation of pollen from pollen mother cell is referred to asa) Pollenogenesis b) Megasporogenesis c) Microsporogenesis d) Ovulation
8. Male gametophyte in angiosperm is represented bya) Anther b) Androeciumc) Microsporangium d) Pollen grain
9. Pollen grains area) Spherical b) Oval c) Generally spherical d) Irregular
10. Exine of pollen is (A) Hard outer layer of pollen grain (B) Most resistant organic matter known. (C) Layer made up of sporopollenin. (D) Layer which can withstand high temperature, strong acids and alkali. (E) Layer which cannot be degraded by any known enzyme. Which one of the following is correct?a) A and B b) A, B, C and D c) A, B, C, D and E d) A, C and E
Choose the correct answer from the following options.(a) (a)-(iv), (b)-(iii), (c)-(i), (d)-(i) (b) (a)-(i), (b)-(ii), (c)-(iii), (d)-(iv) (c) (a)-(ii), (b)-(iii), (c)-(i), (d)-(iv)(d) (a)-(iii), (b)-(iv), (c)-(i), (d)-(ii)
15 .In which of the following stage, the terminalisation occurs?(a) Zygotene(b) Pachytene (c) Diakinesis(d) Diplotene
1. Flippers of Penguins and Dolphins are an example ofa) Natural selection b) Adaptive radiation c) Analogous organs d) Homologous organs
2. Theory of panspermia:a) Creation of life from dead and decaying matter b) Creation of life from chemicals c) Creation of life from pre-existing life d) Creation of life from spores
3. Chemical evolution theory is also known asa) Cosmozoic theory b) Oparin- Haldane’s theory c) Miller and Urey theory d) Creation theory
4. What type of selection will be observed if the distribution of neck length shifted to favour individuals with long neck?a) Stabilising selection b) Directional selection c) Disruptive selection d) Both A and C
5. Archaeopteryx fossil shows link betweena) Birds and fishes b) Reptiles and mammals c) Fishes and amphibians d) Reptiles and birds
6. Which of the following is used to measure pollutants in the water body?(a) Helium level in the water (b) Calcium level (c) BOD (d) All of these
7. Bacillus thuringiencis kills the pest by releasing toxins in the(a) Brain of pests (b) Gut of pests (c) Heart of pests (d) Lungs of pests
8. Which of the following can be controlled by using biopesticides?(a) Aphids(b) Grasshoppers (c) Beetles (d) All of these
9. The primary treatment of sewage fails to remove(a) Sand particles(b) Small pebbles (c) Pathogens(d) Plastics
10. Aspergillus niger produces(a) Acetic acid (b) Fumaric acid (c) Lactic acid (d) Citric acid
11. Integrated Pest Management discourages the use of(a) Biological methods (b) Chemical pesticides (c) Mechanical methods (d) All of these
12. Cyclosporin A drug is produced bya) Trichoderma polysporum b) Penicillium notatum c) Manascus purpureus d) Aspergillus niger
13. The first antibiotic was discovered by(a) R Koch (b) Louis Pasteur (c) A Fleming (d) W Fleming
14. In gobar gas, the maximum amount is(a) Propane (b) Methane (c) Butane (d) Carbon dioxide
15. The free-living fungus Trichoderma can be used fora) Biological control of plant disease b) Killing insects c) Controlling caterpillars d) Producing antibiotics
16. Statement I: Biocontrol refers to the use of biological methods for controlling plant diseases and pests. Statement II: Use of biocontrol measures will greatly reduce our dependence on toxic chemical and pesticide. In the light of the above statements, choose the correct answer from the options given below:a) Both Statement I and Statement II are incorrect b) Statement I is correct but Statement II is incorrect c) Statement I is incorrect but Statement II is correct d) Both Statement I and Statement II are correct
17. Which bacteria is involved in biogas production?(a) Staphylococcus(b) Aerobic bacteria (c) Methanogens (d) None of these
18. Biologists consider flowers to be objects ofa) Morphological marvels b) Embryological marvels c) Sites of sexual reproduction d) All of these
19. When does plant decides to flower?a) In embryonic development b) During the appearance of flower buds c) Before the actual flower appear on plant d) All the above
20. Whorl of carpel in flower representsa) Gynoecium b) Androecium c) Calyx d) Corolla
1. The roots that originate from the base of the stem are(a) Fibrous root(b) Primary roots (c) Prop roots(d) Lateral roots
2. Tap root system is found in(a) wheat (b) mustard (c) grass (d) Monstera
3. Select the group of plants that possess stilt roots(a) Rhizophora, Hedera (b) Pandanus, Ficus (c) Ficus, Pisum (d) Zea mays, Rhizophora
4. _______develops from the plumule of the embryo of germinating seed(a) Axillary bud (b) Petiole (c) Stem(d) Root
5. _______are the green stems of limited growth which have taken over the function of photosynthesis from leaves.(a) phylloclades (b) Cladodes (c) phyllodes (d) Stem thorn
6. In Opuntia, the function of photosynthesis is carried out by.(a) cladode (b) phyllode (c) phylloclade(d) stipules
7. Sweet potato is a modified(a) stem(b) Adventitious root (c) Tap root (d) rhizome.
8. The region of the stem where leaves are borne are called ______and ______are the portions between two_____(a) Nodes, nodes and internodes (b) nodes, internodes and nodes (c) internodes, nodes and nodes (d) internodes, internodes and nodes
9. The given figure shows the regions of root tip with labelling as A, B and (c) Choose the option which shows the correct labelling of A, B anda) A-Zone of elongation, B-Zone of meiosis, C Zone of mitosis. b) A Zone of maturation, B Zone of meristematic activity, C-Zone of elongation. c) A-Zone of mitosis, B-Zone of elongation, C Zone of root cap. d) A-Region of maturation, B- Region of elongation, C -Zone of meristematic activity.
10. What type of growth are seen in roots(a) phototropic (b) ascending growth (c) geotropic (d) against gravity
11. What part of the stem are modified for support and climbing called tendrils(a) nodes (b) axillary bud (c) terminal bud(d) shoot apex
12. Pneumatophore are found in(a) Rhizobium(b) leguminous plants (c) Rhizophora (d) maize
13. Who proposed Theory of Biogenesis?(a) Mendel (b) Pasteur (c) Morgan (d) Aristotle
14. Amino acids found in Miller and Urey experimenta) Alanine, glycine, aspartic acid b) Alanine, valine, aspartic acid c) Valine, glycine, proline d) Valine, glycine, leucine
15. Tendrils of cucurbits and thorns of bougainvillea are example ofa) Homologous organ b) Analogous organ c) Natural selection d) Adaptive radiation
16. Remains or impression of hard parts of ancient organisms are preserved in which type of rocks(a) Any type of rocks (b) Igneous (c) Metamorphic(d) Sedimentary
17. When selective pressures select against two extremes of a trait, the population experiencesa) Disruptive selection b) Directional selection c) Stabilising selection d) Adaptive radiation
18. In Miller and Urey experiment, the ratio of Ammonia: Methane: Hydrogen is(a) 2:1:2 (b) 2:2:1 (c) 1:2:2 (d) 1:2:1
19. Wooly Mammoth found deep frozen in Siberia ice is(a) Unaltered fossil (b) Petrified fossil (c) Coprolites (d) Mould fossil
20. Embryological support for evolution was proposed by(a) Darwin (b) Von baer (c) Pasteur (d) Haeckel
(a) CH3O-CH3(b) CH3O-CH2CH(c) C2H5-S-C2H5 (d) CH3CH2CH3
(a) CO2(b) H2O(c) NH3 (d) PF5
List 1 List 2
(a) [Ne] 3s1(b) [Ne] 3s2 3p1(c) [Xe] 6s1(d) [Xe] 6s2
(a) X2 O(b) P2O(c) PX3(d) P2X3
(a) I > I+> I– (b) I > I– > I+(c) I+ > I– > I (d) I– > I > I+
18. On which of the following factors, the rate constant does not depend?(a) Temperature (b) Concentration (c) Presence of catalyst (d) Nature of rea tants
(a) sec-1, M sec-1 (b) sec-1, M(c) M sec-1, sec-1(d) M, sec-1
1. In bell shaped age pyramid, population is(a) Expanding (b) Stable (c) Declining(d) None of above
2. Estimate of actual number of individuals in a population(a) Relative density (b) Absolute density (c) Partial density(d) Economic density
3. Formula for logistic growth:a) dN/dt=rN(K-N/K) b) dN/dt=rN(N-N/K) c) dN/dt=rN(N-K/K) d) dN/dt=rN(1-N/K)
4. Select the negative factor for population density? 1. Emigration 2. Natality 3. Mortality 4. ImmigrationOptions: (a) 1 and 2 (b) 2 and 3 (c) 3 and 4(d) 1 and 3
5. Group of organism of the same species occupying a particular space(a) Population (b) Community (c) Ecosystem(d) Biosphere
6. Which of the following structures in a flower is responsible for the production of male gametes?(a) Ovary (b) Anther (c) Stigma (d) Style
7. In flowering plants, double fertilization involves:a) Fusion of one sperm with the egg and another with the polar nuclei b) Fusion of two sperms with the egg cell c) Fusion of one sperm with the antipodal cells d) Fusion of two polar nuclei with the egg
8. The process of transfer of pollen grains from the anther to the stigma of the same flower is called:(a) Xenogamy (b) Geitonogamy (c) Autogamy (d) Cleistogamy
9. Which of the following is NOT a part of the female reproductive unit in angiosperms?(a) Ovule (b) Filament (c) Nucellu(d) Embryo sac
10. Cleistogamous flowers are adapted for:a) Cross-pollination b) Self-pollination c) Wind pollination d) Water pollination
11. In an embryo sac, the cells that assist in guiding the pollen tube towards the egg are:a) Antipodal cells b) Polar nuclei c) Synergids d) Nucellar cells
12. The structure that connects the stigma to the ovary in a flower is:(a) Filament(b) Style (c) Petiole (d) Pedicel
13. Which of the following pollinating agents is responsible for hydrophily?(a) Wind(b) Water (c) Insects (d) Birds
14. After fertilization, the ovule develops into:(a) Seed (b) Fruit (c) Pericarp (d) Endosperm
15. In which type of endosperm development does cell wall formation occur immediately after each nuclear division?a) Nuclear endosperm b) Cellular endosperm c) Helobial endosperm d) Mosaic endosperm
16. The embryo sac of a typical angiosperm at maturity is:a) 8-nucleate, 7-celled b) 7-nucleate, 8-celled c) 6-nucleate, 7-celled d) 8-nucleate, 8-celled
17. Which of the following is a monocarpic plant?(a) Mango(b) Bamboo (c) Apple (d) Papaya
18. The process of appearance of recombination nodules occurs at which sub-stage of prophase-I of meiosis?a) Diplotene b) Zygotenec) Diakinesis d) Pachytene
19. Which one is correct about crossing over/ genetic recombination? (A) It occurs in tetrad stage. It occurs in pachytene stage of prophase-I of meiosis-I (B) It occurs between non-sister chromatids of homologous chromosomes. (C) It is a recombinase enzyme mediated process. (D) It is also the reciprocal transfer of genes between the non-homologous chromosomes.(a) All are correct (b) All except (d) (c) (b), (c) and (d) (d) (c) and (d)
20. Assertion (A): Meiosis maintains a fixed number of chromosomes in sexually reproducing organisms. Reason (R): First division of meiosis is heterotypic or reductional division.a) Both assertion and reason are true and reason is the correct explanation of assertion. b) Both assertion and reason are true but reason is not the correct explanation of assertion. c) Assertion is true but Reason is false. d) Assertion is true but Reason is true.
1. Oxygenic photosynthesis is found in
2. Heterocysts occur in(a) Bacteria (b) Archaebacteria (c) Mycoplasma (d) Cyanobacteria
3. Protistans are connecting link betweena) Plants and animals b) Fungi and plants c) Monera and multicellular organisms d) Fungi and animals
4. Members of Kingdom Protista are primarily(a) Aquatic(b) Terrestrial (c) Saprotrophs(d) Parasites
5. Five kingdom classification was proposed bya) Herbert Copeland b) Robert H Whittaker c) Ernst Haeckel d) Carolus Linnaeus
6. Which of the following have cellulosic cell wall?(a) Fungi (b) Animalia (c) Plantae (d) Monera
7. Viroids havea) RNA not enclosed by protein coat b) DNA enclosed by protein coat c) DNA not enclosed by protein coat d) RNA enclosed by protein coat
8. Which of the following groups are commonly known as imperfect fungi(a) Phycomycetes (b) Ascomycetes (c) Basidiomycetes (d) Deuteromycetes
9. Thread-like fungal structures are known as(a) Sclerotia(b) Phycomycetes (c) Hyphae(d) None of these
10. Viruses are no more alive than isolated chromosomes because theya) Require both RNA and DNA b) Both require food molecules c) Both require oxygen for respiration d) Both require the environment of a cell to replicate
11. The smallest known agents of the infectious diseases are(a) Viruses (b) Mycoplasmas (c) Viroids (d) Actinomyces
12. Main component of cell wall of fungi is(a) Chitin (b) Cellulose (c) Glucose(d) Pectin
13. Which of the following structures are produced exogenously in fungus?(a) Ascus(b) Conidia (c) Basidium (d) Microspores
14. Which is not character of a population?(a) Sex ratiob) Age (c) Birth rate and death rate(d) Habitat
15. J-shaped growth curve is observed in(a) Logistic growth (b) Exponential growth (c) Mutualism (d)None of above
16. Which enzyme is produced by ADA gene?a) Adenylate b) Adenine deaminase c) Adenosine deaminase d) Adenine
17. Gene therapy involvesa) Introduction of normal gene to a cell b) Replacement of defective gene with normal gene c) Transfer of gene d) None of above
18. Which chain is absent in mature insulin?(a) Chain A (b) Chain B (c) Chain C(d) Chain A and B
19. Human insulin is commercially produced froma) Rhizobium b) Mycobacterium c) Saccharomyces d) Escherichia
20. What connects peptide chain in mature insulin?a) Disulphide bridges b) Ligase c) Covalent bond d) Hydrogen bond
1. The IUPAC symbol for the element Dubnium is
(a) ∆H = ∆U(b) ∆H = ∆U + RT (c) ∆H = ∆U + 3RT(d) ∆H = ∆U – 3RT
18. For irreversible expansion of an ideal gas under isothermal condition, the correct option is:a) ΔU = 0, ΔStotal ≠ 0 b) ΔU ≠ 0, ΔStotal = 0 c) ΔU = 0, ΔStotal = 0 d) ΔU ≠ 0, ΔStotal ≠ 0
9. Human skin colour is an example of(a) Polygene (b) Pleiotropic gene (c) Multiple alleles (d) CodominanceDeselect Answer
10. Pleiotropic effect is found in(a) Human height (b) Phenylketonuria (c) Night blindness (d) HaemophiliaDeselect Answer
11. Mendel’s second law is also known asa) Law of dominance b) Law of segregation c) Law of independent assortment d) None of aboveDeselect Answer
12. Chromosomal theory of inheritance is proposed bya) Sutton and Flemming b) Walter Flemming c) Sutton and Boveri d) T.H MorganDeselect Answer
13. Brood parasitism is observed in(a) Cuckoo (b) Cuscuta (c) Butterfly (d) StarfishDeselect Answer
14. The relation between algae and fungi in lichen is(a) Commensalism (b) Parasitism (c) Competition(d) MutualismDeselect Answer
15. Type of interaction that occur in predation is(a)+,+ (b) +,- (c) -,- (d) +,0Deselect Answer
16. The principle of competitive exclusion was given by(a) Darwin (b) MacArthur (c) Connell (d) GauseDeselect Answer
17. In some shallow South American lake, flamingoes and fishes show which type of interaction(a) Competition(b) Mutualism (c) Predation (d) MutualismDeselect Answer
18. Select the correct statement.a) Predators are conduit for energy flow b) Type of interaction in predation is positive c) Predators do not play a role in prey population d) All of aboveDeselect Answer
19. Male contains half the number of chromosomes present in female in (a) Human beings(b) Honey bee (c) Pigeon (d) MothDeselect Answer
20. The number of chromosomes in a person suffering from Down’s Syndrome is(a) 46 (b) 47 (c) 45 (d) 23Deselect Answer
1. HGP is the sequencing of complete human
2. The full form of RFLP isa) Restriction Fragment Long Polymerase b) Restriction Fragment Length Polymorphism c) Required Fragments Length Polymorphism d) Regular Fragment Length Polymerase.Deselect Answer
3. In C3-plants, the first stable product of photosynthesis during the dark reaction isa) malic acid b) oxaloacetic acid c) 3-phosphoglyceric acid d) PhosphoglyceraldehydeDeselect Answer
4. In C4-plants, Calvin cycle operates ina) stroma of bundle sheath chloroplast b) grana of bundle sheath chloroplasts c) grana of mesophyll chloroplasts d) stroma of mesophyll chloroplastsDeselect Answer
5. During translation, the role of tRNA is to:a) Carry amino acids to the ribosome b) Synthesize mRNA from DNA c) Unwind the DNA double helix d) Join Okazaki fragmentsDeselect Answer
6. In the lac operon, the repressor protein binds to:a) Operator b) Promoter c) Structural genes d) Regulator geneDeselect Answer
7. Which of the following is NOT a feature of the genetic code?a) It is degenerate b) It is unambiguous c) It is universal d) It is double-strandedDeselect Answer
8. In a DNA molecule, the percentage of adenine is 30%. What will be the percentage of guanine? (a) 20% (b) 30% (c) 40%(d) 50%Deselect Answer
9. What is the role of the promoter region in transcription?a) It terminates the transcription process b) It serves as the binding site for RNA polymerase c) It codes for the synthesis of tRNA d) It joins Okazaki fragmentsDeselect Answer
1. Benzene reacts with CH3Cl in the presence of anhydrous AlCl3 to form :
d > f