MCQs on biopesticides – NEET Biology

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NEET Biology Biopesticides Multiple Choice Questions And Answers

Question 1. Pulse pest is:

  1. Rntehtts
  2. Slug and snails
  3. Schocnobices
  4. Leptocorisa.

Answer: 1. Rntehtts

Question 2. The disease apple scab is due to:

  1. Zinc deficiency in the soil
  2. Molybdenum deficiency in the soil
  3. Respiratory gaseous products in cold storage
  4. Xanthomonas malvacerrum .

Answer: 3. Respiratory gaseous products in cold storage

Question 3. Nephantis screencap is responsible for damage of:

  1. Rice
  2. Wheat
  3. Coconut
  4. Cotton.

Answer: 3. Coconut

Question 4. Late blight of potatoes is caused by:

  1. Pythium species
  2. Calviceps purpura
  3. Phytophthora infestans
  4. Uncinula ancestor.

Answer: 1. Pythium species

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Question 5. Which of the following herbicides is derived from urea?

  1. Simazine
  2. DDT
  3. Malathion
  4. Aldrin.

Answer: 1. Simazine

NEET Biology Biopesticides On MCQs

Question 6. Stem borer of rice is caused by:

  1. Tnporyza inertias
  2. Leptocorisa varicomis
  3. Pectinophora gossypiella
  4. None of the above.

Answer: 1. Tnporyza incertulas

Biopesticides Mcq For Neet

Question 7. Which of the following pests feeds directly on the rice grains?

  1. Red pumpkin beetle
  2. Rice weevil
  3. Carpet beetle
  4. None of the above.

Answer: 2. Rice weevil

Question 8. The science which deals with the study of the nature, development and control of plant diseases is called as:

  1. Plant pathology
  2. Phytopathology
  3. Pathology
  4. Both (1) and (2).

Answer: 4. Both (1) and (2).

Question 9. A plant is said to be diseased when:

  1. It shows some physiological disorder
  2. There developed some structural abnormality
  3. Its economic value is reduced
  4. All the above.

Answer: 4. All the above.

Question 10. In modern science, a disease is an interaction:

  1. Between the host and parasite
  2. Between the plant and environment
  3. Among the host, parasite and environment
  4. All of the above

Answer: 3. Among the host, parasite and environment

Question 11. Puccinia graminis tritici causes:

  1. Covered smut of wheat
  2. Black rust of wheat
  3. Loose smut of wheat
  4. White rust.

Answer: 2. Black rust of wheat

Biopesticides Mcq For Neet

Question 12. The problem of wheat rust in India was studied by:

  1. J.F. Dastur
  2. E.J. Butler
  3. K.C. Mehta
  4. G.S. Kulkami.

Answer: 3. K.C. Mehta

Question 13. The small insects that suck the milky sap in the tender grains of rice after destroying the crop completely are:

  1. Gundhy or paddy bugs of rice, leukocoria
  2. Larvae of rice grasshopper, hieroglyphs
  3. Rice weevil, Calandra sp.
  4. Lesser grain beetles, Rhizopertha sp.

Answer: 1. Gundhy or paddy bugs of rice, leukocoria

Question 14. An organism which causes a disease in a plant is called as:

  1. Parasite
  2. Pathogen
  3. Vector
  4. Host.

Answer: 2. Pathogen

Question 15. Bacteria and fungi are the pathogens belonging to:

  1. Biotic type
  2. Abiotic type
  3. Viral type
  4. Both biotic and abiotic types.

Answer: 1. Biotic type

Question 16. When a disease spreads to the whole of the plant, it is termed as:

  1. Localised
  2. Systemic
  3. Sporadic
  4. Endemic.

Answer: 2. Systemic

Neet Biology Mcqs On Biopesticides

Question 17. The brown leaf spot disease of rice is caused by a fungus called:

  1. Phytophthora infestans
  2. Helminthosporium oryzae
  3. Venturia inadequate
  4. Xanthomonas oryzae.

Answer: 3. Venturia inadequate

Question 18. Insect pests can be controlled by:

  1. Using bastide
  2. Using antibiotics
  3. Spraying sulphur dust
  4. Spraying insecticides.

Answer: 4. Spraying insecticides.

Question 19. Paddy bug is a serious pest of:

  1. Wheat
  2. Paddy
  3. Groundnut
  4. Sugarcane.

Answer: 4. Sugarcane.

Question 20. An abnormal increase in the size of the plant organ due to the increase in the number of cells is called:

  1. Hyperplasia
  2. Hypertrophy
  3. Overgrowth
  4. Canker.

Answer: 1. Hyperplasia

Question 21. Blight refers to the:

  1. Development Of Large And Irregular Spots On The Leaves
  2. Burnt Appearance In The Infected Part Of The Plant
  3. Decaying And Discolouring Of The Different Parts Of The Plant
  4. Death Of The Cells In The Form Of Elongated Lines Or Streaks.

Answer: 2. Burnt Appearance In The Infected Part Of The Plant

Question 22. Khapra beetle (Trogoderma granarium) is a pest of:

  1. Stem Of Rice
  2. Leaves Of Paddy
  3. Stored Grains
  4. Both (1) and (2).

Answer: 3. Stored Grains

Question 23. Wilting in a plant is caused by:

  1. An injury to the root system
  2. Loss of water from the soil
  3. Plugging of xylem by fungi and bacteria
  4. All the above.

Answer: 4. All the above.

Previous Year Neet Questions On Biopesticides

Question 24. In ergot disease, fungal mycelium (Claviceps purpurea) aggregates to form a hard bunch called the:

  1. Blotch
  2. Knot
  3. Spot
  4. Sclerotium.

Answer: 1. Blotch

Mcqs On Biopesticides Question 25. Insecticides are specific inhibitors of:

  1. Nervous system
  2. Blood vascular system
  3. Digestive system
  4. Excretory system.

Answer: 1. Nervous system

Question 26. When a disease in moderate or severe form is localised to a particular region, it is called as

  1. Epidemic
  2. Endemic
  3. Sporadic
  4. Pandemic.

Answer: 2. Endemic

Question 27. The disease in which the floral parts get transformed into leafy structures is called as:

  1. Dieback
  2. Phylloidy
  3. Atrophy
  4. Hypertrophy

Answer: 2. Phylloidy

Question 28. Rust diseases are:

  1. Air bone
  2. Soil bone
  3. Seed borne
  4. All the above

Answer: 1. Air bone

Question 29. Tobacco mosaic virus particles are:

  1. Rod-shaped
  2. Rounded
  3. Comma-shaped
  4. Amoeboid.

Answer: 1. Rod-shaped

Previous Year Neet Questions On Biopesticides

Question 30. Xantliomonas oryzae causes:

  1. Bacterial blight of rice
  2. Citrus canker
  3. Potato mosaic
  4. White rust of crucifers.

Answer: 1. Bacterial blight of rice

Question 31. Bacterial blight of rice is a disease which is

  1. Seed Borne
  2. Air Borne
  3. Soil Borne
  4. Water Borne.

Answer: 1. Seed Borne

Question 32. Malathion is present in:

  1. Baygon
  2. Finit/Flit
  3. Temik
  4. Furadin.

Answer: 2. Finit/Flit

Question 33. Potato mosaic disease is caused by:

  1. Bacteria
  2. Synchytrium sp.
  3. Potato virus X and Y
  4. Both (2) and (3).

Answer: 3. Potato virus X and Y

Question 34. Black stem rust of wheat is caused by:

  1. Ustilago tritici
  2. Puccinia graminis tritici
  3. Altemaria solani
  4. None of these.

Answer: 2. Puccinia graminis tritici

Question 35. A diseased plant shows water-soaked translucent spots on the margin and mid-rib of the leaves. Slowly the spots increase and form yellowish white streaks. Bacterial exudates appear in the form of droplets on the affected parts, which later on dry up forming hard resinous granules. The vascular tissue gets plugged and the plant ultimately dies. The disease is known as:

  1. Potato mosaic
  2. Bacterial blight of rice
  3. Little leaf of brinjal
  4. Late blight of potato.

Answer: 3. Little leaf of brinjal

Question 36. Prophylaxis refers to:

  1. Curing the diseased plants
  2. Improvement of the power of disease resistance of the plants
  3. Prevention of the plants from being exposed to the agencies responsible for various plant diseases
  4. All the above.

Answer: 3. Prevention of the plants from being exposed to the agencies responsible for various plant diseases

Examples Of Biopesticides Mcqs For Neet

Question 37. Quarantine regulations are a measure of control of plant diseases of:

  1. Therapeutic nature
  2. Prophylactic nature
  3. Immunization nature
  4. Not related to plant diseases.

Answer: 2. Prophylactic nature

Question 38. Bordeaux mixture contains:

  1. Borax dissolved in water
  2. Sodium bisulphite dissolved in water
  3. Copper sulphate and lime dissolved in water
  4. Phenyl mercuric acetate dissolved in water.

Answer: 3. Copper sulphate and lime dissolved in water

NEET Objective Questions On Biopesticides Question 39. Quarantine regulations are concerned with

  1. The growing of fruit trees
  2. Prevention of entry of diseased plant material into our country
  3. The spraying of diseased plants with insecticides and fungicides, etc.
  4. None of these

Answer: 2. Prevention of entry of diseased plant material into our country

Question 40. The pesticide used as a preventive measure in buildings is:

  1. Aldrin
  2. Dieldrin
  3. Endrin
  4. DDT.

Answer: 1. Aldrin

Question 41. Systematic removal of diseased plants from a field is called:

  1. Roguing
  2. Crop rotation
  3. Field sanitation
  4. Biological control.

Answer: 1. Roguing

Question 42. A good chemotherapeutic should be:

  1. Cheap, easily available and harmless to the host
  2. Toxic to the pathogen
  3. Capable of remaining on the host surface for quite some time
  4. All of these.

Answer: 4. All of these.

Question 43. A mild mosaic of potato is visible in the form of:

  1. Hypertrophy of leaves
  2. Mild interveinal mottling or chlorosis of leaves
  3. Tubers show necrotic spots
  4. Both (2) and (3).

Answer: 4. Both (2) and (3).

Question 44. A mild mosaic of potato is transmitted by:

  1. Bacteria
  2. Sap inoculum
  3. Insects
  4. Soil.

Answer: 2. Sap inoculum

Examples Of Biopesticides Mcqs For Neet

Question 45. Rugose mosaic of potato is caused by:

  1. Potato virus X
  2. Potato virus Y, t,
  3. Potato virus A
  4. Both (1) and (2).

Answer: 4. Both (1) and (2).

Agricultural Chemical Pesticides And Plant Pests Questions From Competitive Examinations

Question 1. Which of the following pesticides is an acetylcholinesterase inhibitor?

  1. Aldrin
  2. Y-BHC
  3. Endosulfan
  4. Alatliion.

Answer: 4. Allison.

Question 2. Integrated pest management (IPM) stands for:

  1. Chemical control
  2. Biological control
  3. Host plant resistances
  4. Integration of the above.

Answer: 4. Integration of the above.

Question 3. The chemical pesticide present in Baygon is

  1. Parathion
  2. Malatliion
  3. Aldicarb
  4. Propoxur.

Answer: 4. Propoxur.

Question 4. Which one is the active ingredient of flit.?

  1. Malathion
  2. Aldicarb
  3. Propoxur
  4. Carbofuran.

Answer: 1. Malathion

Question 5. Which of the following pesticides is most toxic to vertebrates:

  1. Carbamates
  2. Organochlorines
  3. Organophosphates
  4. None of these.

Answer: 3. Organophosphates

Examples Of Biopesticides Mcqs For Neet

Question 6. D.D.T. and 2, 4-D were introduced:

  1. During World War 1
  2. Just after the World War 1
  3. Towards the beginning of World War 2
  4. Towards the end of World War 2.

Answer: 4. Towards the end of World War 2.

Question 7. Carbofuran is sold in the market as:

  1. Baygon
  2. Furadan
  3. Aldrin
  4. DDT.

Answer: 2. Furadan

Question 8. Which one of the chemicals is present in Baygon?

  1. Aldicarb
  2. Propoxur
  3. Carbofuran
  4. Malathion.

Answer: 2. Propoxur

Question 9. The major drawback of D.D.T. as a pesticide is that

  1. Organisms at once develop resistance to it.
  2. It is significantly less effective than other pesticides
  3. Its cost of production is high
  4. It is not readily and rapidly degraded in nature.

Answer: 4. It is not readily and rapidly degraded in nature.

Question 10. Which is a fungicide?

  1. BHC
  2. DDT
  3. 2,4-D
  4. Bordeaux mixture.

Answer: 4. Bordeaux mixture.

Question 11. A pesticide of a lipophilic nature is:

  1. 2-4D
  2. DDT
  3. BHC
  4. Carbamates.

Answer: 2. DDT

Question 12. The common mode of action of most insecticides is through the attack on:

  1. Nervous system
  2. Circulatory system
  3. Respiratory system
  4. Muscular system.

Answer: 1. Nervous system

Question 13. Which of the following is not correctly matched:

  1. Pyrethroid—Arazine
  2. Organochlorine—D.D.T.
  3. Organophosphate—Malathion
  4. Carbamate—Carbaryl.

Answer: 1. Pyrethoid—Arazine

Biopesticides Mcq For Neet

Question 14. Which of the following ingredients of pesticide killed hundreds of people in the Bhopal gas tragedy:

  1. Carbon tetra chloride
  2. Methyl isocyanate
  3. Mustard gas
  4. Nitrous acid.

Answer: 2. Methyl isocyanate

Question 15. Herbicides interfere with

  1. Carbon dioxide absorption
  2. Water absorption
  3. Translocation of sugar
  4. Photolysis of water.

Answer: 4. Photolysis of water.

Question 16. Drinking mineral water with very low pesticides (about 0.02 ppm) for long periods may:

  1. Cause cancer of the intestine
  2. Produce immunity against mosquito
  3. Cause leukaemia (blood cancer) in most people
  4. Lead to the accumulation of pesticide residues in body fat.

Answer: 4. Lead to accumulation of pesticide residues of body fat.

Question 17. Which one among the following is likely to have the highest level of DDT deposition in its body?

  1. Crab
  2. Eel fish
  3. Sea gull
  4. Phytoplanktons

Answer: 3. Seagull

Mcqs On Biopesticides Question 18. The chemicals used in the National Malaria Eradication Programme are:

  1. BHC
  2. DDT
  3. 2,4-D
  4. Pyrethroid

Answer: 2. DDT

Biopesticides Mcq For Neet

Question 19. Which one is a pest:

  1. Mouse
  2. Pathogen
  3. Insect
  4. All of these.

Answer: 4. All of these.

Question 20. Insecticides obtained from neem plant are:

  1. Pyrethrin
  2. Pyrethroid
  3. Thiocarbamate
  4. Azadirachtin.

Answer: 4. Azadirachtin.

Question 21. Which of the following statements is correct about DDT?

  1. It is not a pollutant
  2. It is a biomagnifying biodegradable pollutant
  3. It is a non-biomagnifying biodegradable pollutant
  4. It is a biomagnifying non-biodegradable pollutant.

Answer: 4. It is a biomagnifying non-biodegradable pollutant.

Mcqs On Biopesticides Question 22. Weed killers generally have properties much like that of:

  1. Hormones
  2. Carbohydrate
  3. Enzymes
  4. All of these.

Answer: 1. Hormones

Question 23. Bordeaux mixture can be prepared by mixing the copper sulphate with:

  1. Limestone
  2. Sodium chloride
  3. Calcium sulphate
  4. Milk of calcium hydroxide.

Answer: 4. Milk of calcium hydroxide.

Question 24. Which is used as weedicide?

  1. 2, 4-D
  2. IBA
  3. IAA
  4. ABA.

Answer: 1. 2, 4-D

Question 25. Biomagnification phenomenon is related to the pollutant:

  1. CO2
  2. NO2
  3. DDT
  4. SO2

Answer: 3. DDT

 

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