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1.

During seed germination its stored food is mobilized byA. ABAB. GibberellinC. EthyleneD. Cytokinin

Answer» Correct Answer - 2
2.

Monoecious plant of Chara shows occur- rence ofA. Upper antheridium and lower oogoni- um on the same plantB. Upper oogonium and lower antheridi- um on the same plantC. Antheridiophore and archegoniophore on the same plantD. Stamen and carpel on the same plant

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3.

Which of the metabolites is common to respiration-mediated breakdown of fats, carbohydrates and proteins?A. Pyruvic acidB. Acetyl CoAC. Glucose - 6 -phosphateD. Fructose 1, 6 -bisphosphate

Answer» Correct Answer - 2
4.

Which of the following criteria does not pertain to facilitated transport?A. Transport saturationB. Uphill transportC. Requirement of special membrane proteinsD. High selectivity

Answer» Correct Answer - 2
5.

The essential chemical components of many coenzymes areA. CarbohydratesB. VitaminsC. ProteinsD. Nucleic acids

Answer» Correct Answer - 2
6.

Which one of the following is not the func- tion of placenta? ItA. Facilitates removal of carbon dioxide and waste material from embryo.B. Secrets oxytocin during parturition.C. Facilitates supply of oxygen and nu- trients to embryo.D. Secretes estrogen

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7.

Product of sexual reproduction generally generatesA. New genetic combination leading to variationB. Large biomassC. Longer viability of seedsD. Prolonged dormancy

Answer» Correct Answer - 1
8.

The H-zone in the skeletal muscle fibre is duetoA. The central gap between actin fila- ments extending through myosin fil- aments in the A-bandB. Extension of myosin filaments in the central portion of the A-band.C. The absence of myofibrils in the central portion of A-bandD. The central gap between myosin fila- ments in the A-band.

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9.

The most abundant intracellular cation isA. `H^+`B. `K^+`C. `Na^+`D. `Ca^+`

Answer» Correct Answer - 2
10.

Which of the following statements is cor- rect in relation to the endocrine systemA. Non-nutrient chemicals produced by the body in trace amount that act as intercellular messenger are known as hormones.B. Releasing and inhibitory hormones are produced by the pituitary gland.C. Adenohypophysis is under direct neu- ral regulation of the hypothalamus.D. Organs in the body like gastrointes- tinal tract, heart, kidney and liver do not produce any hormone

Answer» Correct Answer - 1
11.

Which of the following are correctly matched with respect to their taxonomic classificationA. House fly, butterfly, tsetsefly, silver- fish-I nsectaB. Spiny anteater, sea urchin, sea cucumber-EchinodermataC. Flying fish, cuttlefish, silverfish - PiscesD. Centipede, millipede, spider, scorpi- on-lnsecta

Answer» Correct Answer - 1
12.

Natural reservoir of phosphorus isA. RockB. FossilsC. Sea waterD. Animal bones

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13.

Global warming can be controlled byA. Increasing deforestation, slowing down the growth of human populationB. Increasing deforestation, reducing efficiency of energy usage.C. Reducing deforestation, cutting down use of fossiI fuel.D. Reducing reforestation, increasing the use of fossil fuel

Answer» Correct Answer - 3

The correct option is (C) Reducing deforestation cutting down use of fossil fuel.

Global warming can be controlled by reducing deforestation, cutting down use of fossil fuel, which results into reduction into one of the greenhouse gas, i.e., CO2. The other ways of reducing global warming are slowing down. The growth of human population, improving efficiency of energy usage.

14.

A biologist studied the population of rats in a barn. He found that the average natality was 250, average mortality 240, immigra- tion 20 and emigration 30. The net in- crease in population isA. 5B. zeroC. 10D. 15

Answer» Correct Answer - 2
15.

DNA fragments generated by the restric- tion endonucleases in a chemical reaction can be separated byA. ElectrophoresisB. Restriction mappingC. CentrifugationD. Polymerase chain reaction

Answer» Correct Answer - 1
16.

Which of the following Bt crops is being grown in India by the farmers?A. BrinjalB. SoybeanC. MaizeD. Cotton

Answer» Correct Answer - 4
17.

Besides paddy fields, cyanobacteria are also found inside vegetative part ofA. EquisetumB. PsilotumC. PinusD. Cycas

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18.

Which of the following are likely to be present in deep sea waterA. Blue-green algaeB. Saprophytic fungiC. ArchaebacteriaD. Eubacteria

Answer» Correct Answer - 3
19.

Which one of the following is not used for ex situplant conservationA. Shifting cultivationB. Botanical GardensC. Field gene banksD. Seed banks

Answer» Correct Answer - 1
20.

Secondary productivity is rate of formation of new organic matter byA. ConsumerB. DecomposerC. ProducerD. Parasite

Answer» Correct Answer - 1
21.

Interfascicular cambium develops from the cells ofA. EndodermisB. PericycleC. Medullary raysD. Xylem parenchyma

Answer» Correct Answer - 3
22.

Which Mendelian idea is depicted by a cross in which the `F_1` generation re- sembles both the parentsA. Inheritance of one geneB. Co-dominanceC. Incomplete dominanceD. Law of dominance

Answer» Correct Answer - 2