MCQOPTIONS
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MCQOPTIONS
This section includes 48 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The toxicants which kill the pests on coming in direct contact are known as |
| A. | Surface poisons |
| B. | Contact poisons |
| C. | Fumigants |
| D. | None of the above |
| Answer» C. Fumigants | |
| 2. |
Pests resistant to insecticides have |
| A. | Less permeable utricles |
| B. | Capacity of faster storage of toxin in fat |
| C. | Enzymes for metabolising toxin |
| D. | All the above features |
| Answer» E. | |
| 3. |
Catla, singhara, magur and sindhi fishes are found in |
| A. | North, East and South India |
| B. | North and South India |
| C. | East and West India |
| D. | All over India |
| Answer» E. | |
| 4. |
Cod liver oil is a rich source of [Manipal 1995] |
| A. | Iodine |
| B. | Vitamin A |
| C. | Vitamin B |
| D. | Vitamin C |
| Answer» C. Vitamin B | |
| 5. |
The science of rearing, feeding, care, breeding and utilization of animals is called |
| A. | Animism |
| B. | Veterinary science |
| C. | Animal husbandry |
| D. | Dairy science |
| Answer» D. Dairy science | |
| 6. |
Ladybug is a predator of |
| A. | Moths |
| B. | Beetles |
| C. | Bacteria |
| D. | Aphids |
| Answer» E. | |
| 7. |
Full name of BHC is [MP PMT 1987] |
| A. | Benzene hexachloride |
| B. | Hexachlorohaxane |
| C. | Benzene heptachloride |
| D. | a and b both |
| Answer» B. Hexachlorohaxane | |
| 8. |
Pearl is secreted around the |
| A. | Mantle layer |
| B. | Foreign particle between prismatic and nacreous layer |
| C. | Foreign particle between mantle and nacreous layer |
| D. | The shell |
| Answer» D. The shell | |
| 9. |
The word 'livestock' includes |
| A. | Sheep and goat only |
| B. | Pigs and camels only |
| C. | Cattle and buffaloes only |
| D. | All of the above |
| Answer» E. | |
| 10. |
Thurioside is a proteinaceous toxin which is obtained from [Manipal PMT 1990; CBSE PMT 1991] |
| A. | Biofertilizer |
| B. | Farmyard manure |
| C. | Green manure |
| D. | Bacterial origin |
| Answer» E. | |
| 11. |
Secretion of silk gland comes through a small pore. This pore is situated on [MP PMT 1999] |
| A. | Exopodite of \[{{2}^{nd}}\] maxilla |
| B. | Endopodite of \[{{1}^{st}}\] maxilla |
| C. | Prostheca of mandible |
| D. | Anterior part of hypopharynx |
| Answer» E. | |
| 12. |
Which of the following when dissolved in water make(s) Bordeaux mixture [MP PMT 1994; AIIMS 1998; BHU 1998] |
| A. | Copper sulphate |
| B. | Calcium hydroxide |
| C. | Both a and b |
| D. | None of these |
| Answer» D. None of these | |
| 13. |
The most likely reason for the development of resistance against pesticides in insects damaging a crop is [CBSE PMT 2004] |
| A. | Direct mutation |
| B. | Acquired heritable changes |
| C. | Random mutation |
| D. | Genetic recombination |
| Answer» D. Genetic recombination | |
| 14. |
Biological magnification refers to [BVP 2002] |
| A. | Concentration of insecticide in animals |
| B. | Concentration of organophosphate in plants |
| C. | Photography in laboratory |
| D. | Increase in number of animals and plants in ecosystem |
| Answer» B. Concentration of organophosphate in plants | |
| 15. |
Pesticides with very low biodegradation but strong affinity for fatty tissues are [AFMC 1988] |
| A. | Triazines |
| B. | Pyrethroids |
| C. | Organochlorines |
| D. | Organophosphates |
| Answer» D. Organophosphates | |
| 16. |
Which of the following is not an organo-chlorine |
| A. | Endosulphan |
| B. | Malathion |
| C. | DDT |
| D. | Aldrin |
| Answer» C. DDT | |
| 17. |
A carbamate pesticide is |
| A. | Simazine |
| B. | Atrazine |
| C. | Propoxur |
| D. | DDT |
| Answer» D. DDT | |
| 18. |
Major drawback of DDT as a pesticide is that [CBSE PMT 1994; AFMC 2002] |
| A. | Organisms at once develop resistance to it |
| B. | It is significantly less effective than other pesticides |
| C. | It's cost of production is high |
| D. | It is not easily and rapidly degraded in nature |
| Answer» D. It is not easily and rapidly degraded in nature | |
| 19. |
Which of the following pesticides does not inhibit cholinesterase |
| A. | Malathion |
| B. | Parathion |
| C. | DDT |
| D. | Carbofuran |
| Answer» D. Carbofuran | |
| 20. |
Houseflies and mosquitoes have become resistant to the |
| A. | BHC |
| B. | Aldrin |
| C. | DDT |
| D. | Malathion |
| Answer» D. Malathion | |
| 21. |
Which of the following country is lowest in milk yield per cow |
| A. | India |
| B. | U.K. |
| C. | Switzerland |
| D. | Netherlands |
| Answer» B. U.K. | |
| 22. |
Gelatin, a very important raw material for preparation of photographic emulsion, is a bi-product of [KCET 1998] |
| A. | Chicken |
| B. | Forest |
| C. | Fish |
| D. | Cattle |
| Answer» E. | |
| 23. |
Number of breeds of Zebu Cattle is |
| A. | 16 |
| B. | 26 |
| C. | 6 |
| D. | 13 |
| Answer» C. 6 | |
| 24. |
Indian best cattle breeds are found in |
| A. | Coastal area |
| B. | Hilly region |
| C. | Plains of rivers |
| D. | Drier parts |
| Answer» D. Drier parts | |
| 25. |
The most important live stocks of India are |
| A. | Cattle and buffaloes |
| B. | Cattle and dog |
| C. | Dog and cat |
| D. | Elephant and cattle |
| Answer» B. Cattle and dog | |
| 26. |
There are two kinds of camel. Arabian and Bactrian. The Arabian camel have |
| A. | One hump |
| B. | Two hump |
| C. | Three humps |
| D. | None of these |
| Answer» B. Two hump | |
| 27. |
Which of the following is popularly called 'ship of the desert' |
| A. | Yak |
| B. | Camel |
| C. | Donkey |
| D. | Horse |
| Answer» C. Donkey | |
| 28. |
The largest land animal is |
| A. | Camel |
| B. | Elephant |
| C. | Rhino |
| D. | Python |
| Answer» C. Rhino | |
| 29. |
The two natural insecticides used before 1940 |
| A. | Pyrethrum and rotenones |
| B. | Pyrethroids and nicotine |
| C. | Pyrethrum and azadirachtin |
| D. | Pyrethrum and squill |
| Answer» C. Pyrethrum and azadirachtin | |
| 30. |
The carnivorous fish Gambusia, introduced in the lakes, ponds, etc., control a deadly disease in India, feeds on the larvae of [AIIMS 1997] |
| A. | Nephantis |
| B. | Dragonfly |
| C. | Anopheles |
| D. | All of these |
| Answer» D. All of these | |
| 31. |
Which one of the following is pest of tobacco [JIPMER 1997] |
| A. | Tribolium sp. |
| B. | Spodoptera sp. |
| C. | Pectinophora sp. |
| D. | Calandra sp. |
| Answer» C. Pectinophora sp. | |
| 32. |
When a natural predator living being applied on the other pathogenic organisms to control them, this process is called [CBSE PMT 1996] |
| A. | Biological control |
| B. | Genetic engineering |
| C. | Confusion technique |
| D. | Artificial control |
| Answer» B. Genetic engineering | |
| 33. |
Agricultural chemicals include [Pb. PMT 2000] |
| A. | Pesticides |
| B. | Fertilizers |
| C. | Growth regulators |
| D. | All of these |
| Answer» E. | |
| 34. |
The nitrogen fixing symbiotic organism present in Azolla is |
| A. | Nostoc |
| B. | Anabaena |
| C. | Aulosira |
| D. | Azospirillum |
| Answer» C. Aulosira | |
| 35. |
Organic forming is the technique of raising crops through use of [AMU 2003] |
| A. | Manures |
| B. | Resistant varieties |
| C. | Biofertilisers |
| D. | All of these |
| Answer» E. | |
| 36. |
Leghaemoglobin takes part in [Kerala PMT 2000] |
| A. | Energy release |
| B. | Stimulating growth of Rhizobium |
| C. | \[{{N}_{2}}\]absorption |
| D. | Protecting nitrogenase |
| E. | Supply of oxygen |
| Answer» E. Supply of oxygen | |
| 37. |
If wheat field is inoculated with Rhizobium [Pb. PMT 1998] |
| A. | Soil will become nitrogen rich |
| B. | No effect on soil nitrogen |
| C. | Soil will be depleted of nitrogen |
| D. | Soil will become rich in calcium |
| Answer» C. Soil will be depleted of nitrogen | |
| 38. |
Crop rotation is carried out for [AFMC 1996; BHU 2004] |
| A. | Increasing acidity of soil |
| B. | Decreasing fertility of soil |
| C. | Increasing fertility of soil |
| D. | All the above |
| Answer» D. All the above | |
| 39. |
Root nodules for nitrogen fixation of a non-leguminous tree possess [BHU 1994] |
| A. | Frankia |
| B. | Rhizobium |
| C. | Azotobacter |
| D. | Thiobacillus |
| Answer» B. Rhizobium | |
| 40. |
Mycorrhiza is a symbiotic association between [Pb. PMT 1998] |
| A. | Bacteria and fungi |
| B. | Algae and fungi |
| C. | Fungi and roots of higher plants |
| D. | Blue green algae and roots of higher plants. |
| Answer» D. Blue green algae and roots of higher plants. | |
| 41. |
When honey is stored in the honey sac, it is mixed with the |
| A. | Enzymes for the production of fructose and glucose |
| B. | Saliva for increasing the quantity |
| C. | Preservative to keep honey for long time |
| D. | Water to make the nector less viscous |
| Answer» B. Saliva for increasing the quantity | |
| 42. |
Which of the following is a correct statement [CBSE PMT 2000] |
| A. | Drone is diploid |
| B. | Apis indica is largest wild bee |
| C. | Wax is excretory product of bee |
| D. | Fritsch discovered communication in bees |
| Answer» E. | |
| 43. |
Honey mainly consists of [CPMT 1999] |
| A. | Monosaccharides |
| B. | Disaccharides |
| C. | Polysaccharides |
| D. | Fats |
| Answer» B. Disaccharides | |
| 44. |
The honey bees exhibit a type of dance to communicate the location of food. This is known as [KCET 1994] |
| A. | Waggle dance |
| B. | Tap dance |
| C. | Round dance and waggle dance |
| D. | Break dance |
| Answer» D. Break dance | |
| 45. |
Domestication of honey bee is called [CPMT 1983; HP PMT 2005] |
| A. | Sericulture |
| B. | Apiculture |
| C. | Tissue culture |
| D. | Pisciculture |
| Answer» C. Tissue culture | |
| 46. |
What is apiculture |
| A. | Culture of aqueous animals |
| B. | Culture of lac insect |
| C. | Culture of honey bee |
| D. | Culture of prawn |
| Answer» D. Culture of prawn | |
| 47. |
Cryopreservation is |
| A. | Preservation of living being in chemicals |
| B. | Preservation at very low temperature |
| C. | Preservation through expoure to irradiation |
| D. | Preservation through use of gases |
| Answer» C. Preservation through expoure to irradiation | |
| 48. |
Name of sheep cloned for the first time is [AIIMS 1997] |
| A. | Dolly |
| B. | Polly |
| C. | Molly |
| D. | Holly |
| Answer» B. Polly | |