Question 1. The Arteether medicine which is used to cure malaria is obtained from a______.
(A) Algae
(B) Bacteria
(C) Fungus
(D) Seeded plant
Question 2. The drug obtained from the bark of cinchona was used for treating malaria. The synthetic drug which replaced the natural product is______.
(A) Ampicillin
(B) Tetracycline
(C) Chloroquine
(D) Chloromycetin
Question 3. Which one of the following groups of organisms has significant in diagnosing the death by drowning?
(A) Diatoms
(B) Cyanobacteria
(C) Protozoa
(D) Lichens
Question 4. The mulberry fruit is______.
(A) Nut
(B) Samara
(C) Syconus
(D) Sorosis
Question 5. Which one of the following fibre is not a product of plant stem?
(A) Cotton
(B) Jute
(C) Hemp
(D) Flax
Question 6. Leg-haemoglobin is found in_____.
(A) Chicken blood
(B) Legume root nodules
(C) Rabbit blood
(D) Human blood
Question 7. Which one of the following is a man-made cereal, not found in nature?
(A) Soyabean
(B) Triticale
(C) Hybrid maize
(D) Dwarf wheat
Question 8. Canola refers to a special type of oilseed mustard varieties breed for human consumption. The main characteristic of these varieties is that the_____.
(A) Oil has very low uric acid content
(B) Oil has long shelf-life
(C) Oil is rich in unsaturated fatty acid
(D) Seeds have very high oil content
Question 9. Bacteria can be seen by______.
(A) Electron microscope
(B) Hand lens
(C) Compound microscope
(D) Naked eye
Question 10. ‘Spongy Tissue’ is a serious disorder hampering the export of mango variety. It is __________.
(A) Langra
(B) Neelum
(C) Dashehari
(D) Alphonso
Question 11. Which of the following statement about bacteria is correct?
(A) They are on the borderline of living and non-living
(B) They are on the borderline of flowering and non-flowering plants
(C) They are on the borderline of plants and animals
(D) None of the above
Question 12. Desert plants have longer root system because _____.
(A) Roots moves opposite to the solar heat
(B) Soil does not contain water, hence becomes compact and presses the roots to grow longer
(C) Roots grow in search of water
(D) High temperature of the soil stimulates the growth of roots
Question 13. Deserts have phreatophytes i.e., plants that have______.
(A) Small (2-3 mm) or spine-like leaves
(B) Long (20-30 ft) tap roots
(C) Lipid accumulation (20-30 mg) in leaves
(D) Succulent stem (100-200 mm thick)
Question 14. Plants adapted to dry climate are known as ___________.
(A) Hydrophytes
(B) Mean plants
(C) Xerophyte
(D) Epiphyte
Question 15. Desert plants are generally_____.
(A) Heterophyllous
(B) Herbaceous
(C) Succulent
(D) Viviparous
Question 16. Plants which grow on saline soils are______.
(A) Succulents
(B) Halophytes
(C) Hydrophytes
(D) Xerophytes
Question 17. Epiphytes are plants which depend on other plants for______.
(A) Water
(B) Shade
(C) Mechanical support
(D) Food
Question 18. The maximum amount of water, which plants need to grow that is absorbed by the following?
(A) Root hairs
(B) Zone of elongation
(C) Embryonic zone
(D) Embryonic zone
Question 19. A hydrophyte is_____.
(A) A rootless plant
(B) A plant disease
(C) An aquatic plant
(D) A marine animal
Question 20. The radiant energy absorbed by the plants results in______.
(A) Oxidation of carbon dioxide
(B) Reduction of oxygen
(C) Oxidation of chlorophyll
(D) Photolysis of water
Question 21. Which of the following is not correctly matched?
(A) Herbivore – Secondary consumer
(B) Saprotroph – Decomposer
(C) Heterotroph – Consumer
(D) Autotroph – Producer
Question 22. Trophic level-I includes_____.
(A) Green plants
(B) Omnivorous animals
(C) Carnivorous animals
(D) Herbivorous animals
Question 23. A group of archaebacteria is used in the production of______.
(A) Alchohols
(B) Acids
(C) Methane
(D) Ethane
Question 24. How do most insects respire?
(A) By tracheal system
(B) By lungs
(C) Through gills
(D) Through skin
Question 25. Fishes survive under the frozen lake, because______.
(A) Water does not freeze near bottom
(B) Ice is the conductor of heat
(C) Fishes are in hibernation under it
(D) Fishes have hot blood