SPSC Lecturer Botany Past Paper 08-02-2011 21- Name the test used to assess the genotype of F₁ individuals: A. test crossB. reciprocal cross C. back cross D. None of these View Answer Answer : A. test cross Description 22- Crossing over in meiosis takes place in: A. PachyteneB. zygoteneC. diakinesisD. None of these View Answer Answer : A. Pachytene Description 23- The shape of the DNA molecules is: A. spiralB. double helixC. crescent shaped D. None of these View Answer Answer : B. double helix Description 24- Stage in which plasma membrane starts separating from cell wall is called: A. plasmolysisB. incipient plasmolysisC. deplasmolysisD. None of these View Answer Answer : B. incipient plasmolysis Description 25- Synthesis of ATP in the chlorophyll of utilizing light energy is called: A. photorespirationB. photophosphorylationC. photolysis of water D. None of these View Answer Answer : B. photophosphorylation Description 26- Conditions necessary for germination of seed are: A. CO_2, light and O_2 B. Moisture, O_2 and suitable temperatureC. light, O_2 and suitable temperatureD. None of these View Answer Answer : B. Moisture, O_2 and suitable temperature Description 27- Radio carbon dating is used to find the age of: A. FossilsB. RocksC. BuildingsD. None of these View Answer Answer : A. Fossils Description 28- Maximum fixation of solar energy is done by: A. ManB. Green plantsC. FungiD. None of these View Answer Answer : B. Green plants Description 29- Syngemerious stamens (fused anthers) is found in which family: A. cruciferaeB. cucurbitacaeC. AnonaceaeD. None of these View Answer Answer : C. Anonaceae Description 30- The most common method of entry of pollen tube into the ovule is called: A. porogamyB. chalazogamyC. MesogamyD. None of these View Answer Answer : A. porogamy Description 31- What is meant by Horticulture? A. study or practice of growing flowers, fruit, vegetables & gardeningB. science of agriculture C. science of flowers D. None of these View Answer Answer : A. study or practice of growing flowers, fruit, vegetables & gardening Description 32- During global warming, the percentage of carbon dioxide has: A. remain unchanged B. increased in atmosphereC. reduced in atmosphere D. None of these View Answer Answer : B. increased in atmosphere Description 33- What is succession? A. Series of physical changes that occur in an area B. Development of climax vegetationC. Series of biotic communities that appear in a bare areaD. None of these View Answer Answer : C. Series of biotic communities that appear in a bare area Description 34- A mass of protoplasm surrounded by a cell membrane is called: A. a plant cell B. an animal cell C. bacteriumD. None of these View Answer Answer : C. bacterium Description 35- The highly modified plant shoot in which short steam is surrounded by thick fleshy leaves is called ______ . A. CormB. RhizomeC. BulbD. Tuber View Answer Answer : C. Bulb Description 36- Most of the C₄ plants occur in: A. BryophytesB. GrassesC. GymnospermsD. None of these View Answer Answer : B. Grasses Description 37- Compared to the object, real images formed by a lens are always: A. LargerB. SmallerC. InvertedD. Erect View Answer Answer : C. Inverted Description 38- Newton is known for his researches on: A. Atomic structure B. Laws of gravitationC. Theory of population D. Synthetic dye View Answer Answer : B. Laws of gravitation Description 39- The scientist who discovered neutrons was: A. RutherfordB. ChadwickC. BohrD. Millikan View Answer Answer : B. Chadwick Description 40- The statement that is not true of radiation is that it: A. Travels with the speed of light B. Always originates in the sun C. Is absorbed by black surfaces D. Is reflected by shiny surfaces View Answer Answer : B. Always originates in the sun Description 1 2 3
