Which one of the following is an example of carrying out biological control of pests/diseases using microbes ? (1) Lady bird beetle against aphids in mustard (2) Trichoderma sp. against certain plant pathgens (3) Nucleopolyhedrovirus against white rust in Brassica (4) Bt-cotton to increase cotton yield

Which one of the following is an example of carrying out biological control of pests/diseases using
microbes ?
(1) Lady bird beetle against aphids in mustard
(2) Trichoderma sp. against certain plant pathgens
(3) Nucleopolyhedrovirus against white rust in Brassica
(4) Bt-cotton to increase cotton yield
by

1 Answer

Answer :

(2) Trichoderma sp. against certain plant pathgens
by

Related questions

Which one of the following is an example of carrying out biological control of pests/diseases using microbes? (a) Trichoderma sp. against certain plant pathogens. (b) Nucleopolyhedrovirus against white rust in Brassica. (c) Bt-cotton to increase cotton yield. (d) Lady bird beetle against aphids in mustard.

Description : Which one of the following is an example of carrying out biological control of pests/diseases using microbes? (a) Trichoderma sp. against certain plant pathogens. (b) Nucleopolyhedrovirus against white rust ... c) Bt-cotton to increase cotton yield. (d) Lady bird beetle against aphids in mustard.

Last Answer : (a) Trichoderma sp. against certain plant pathogens.

Some of the characteristics of Bt cotton are (a) long fibre and resistance to aphids (b) medium yield, long fibre and resistance to beetle pests (c) high yield and production of toxic protein crystals which kill dipteran pests (d) high yield and resistance to bollworms.

Description : Some of the characteristics of Bt cotton are (a) long fibre and resistance to aphids (b) medium yield, long fibre and resistance to beetle pests (c) high yield and production of toxic protein crystals which kill dipteran pests (d) high yield and resistance to bollworms.

Last Answer : (d) high yield and resistance to bollworms.

Select the correct group of biocontrol agents. (a) Nostoc, Azospirillium, Nucleopolyhedrovirus (b) Bacillus thuringiensis, Tobacco mosaic virus, Aphids (c) Trichoderma, Baculovirus, Bacillus thuringiensis (d) Oscillatoria, Rhizobium, Trichoderma

Description : Select the correct group of biocontrol agents. (a) Nostoc, Azospirillium, Nucleopolyhedrovirus (b) Bacillus thuringiensis, Tobacco mosaic virus, Aphids (c) Trichoderma, Baculovirus, Bacillus thuringiensis (d) Oscillatoria, Rhizobium, Trichoderma

Last Answer : (c) Trichoderma, Baculovirus, Bacillus thuringiensis

Bt cotton variety that was developed by the introduction of toxin gene of Bacillus thuringiensis (Bt) is resistant to (a) insect pests (b) fungal diseases (c) plant nematodes (d) insect predators.

Description : Bt cotton variety that was developed by the introduction of toxin gene of Bacillus thuringiensis (Bt) is resistant to (a) insect pests (b) fungal diseases (c) plant nematodes (d) insect predators.

Last Answer : (a) insect pests

Which of the following is not used as a biopesticide? (a) Trichoderma harzianum (b) Nucleopolyhedrovirus (NPV) (c) Xanthomonas campestris (d) Bacillus thuringiensis

Description : Which of the following is not used as a biopesticide? (a) Trichoderma harzianum (b) Nucleopolyhedrovirus (NPV) (c) Xanthomonas campestris (d) Bacillus thuringiensis

Last Answer : (c) Xanthomonas campestris

29. The disease resistant variety of Brassica resistant to “white rust” is ... b) Pusa Swarnim b) Pusa Komal c) Pusa Sadabahar d) Pusa Shubhra

Description : 29. The disease resistant variety of Brassica resistant to “white rust” is ... b) Pusa Swarnim b) Pusa Komal c) Pusa Sadabahar d) Pusa Shubhra

Last Answer : b) Pusa Swarnim

9. The disease resistant variety of Brassica resistant to “white rust” is ... a) Pusa Swarnim b) Pusa Komal c) Pusa Sadabahar d) Pusa Shubhra

Description : 9. The disease resistant variety of Brassica resistant to “white rust” is ... a) Pusa Swarnim b) Pusa Komal c) Pusa Sadabahar d) Pusa Shubhra

Last Answer : a) Pusa Swarnim

An improved variety of transgenic basmati rice (a) does not require chemical fertilizers and growth hormones (b) gives high yield and is rich in vitamin A (c) is completely resistant to all insect pests and diseases of paddy (d) gives high yield but has no characteristic aroma.

Description : An improved variety of transgenic basmati rice (a) does not require chemical fertilizers and growth hormones (b) gives high yield and is rich in vitamin A (c) is completely resistant to all insect pests and diseases of paddy (d) gives high yield but has no characteristic aroma.

Last Answer : (b) gives high yield and is rich in vitamin A

Trichoderma harzianum has proved a useful microorganism for (a) gene transfer in higher plants (b) biological control of soil-borne plant pathogens (c) bioremediation of contaminated soils (d) reclamation of wastelands.

Description : Trichoderma harzianum has proved a useful microorganism for (a) gene transfer in higher plants (b) biological control of soil-borne plant pathogens (c) bioremediation of contaminated soils (d) reclamation of wastelands.

Last Answer : (b) biological control of soil-borne plant pathogens

. A common biocontrol agent for the control of plant diseases is (a) baculovirus (b) Bacillus thuringiensis (c) Glomus (d) Trichoderma.

Description : . A common biocontrol agent for the control of plant diseases is (a) baculovirus (b) Bacillus thuringiensis (c) Glomus (d) Trichoderma.

Last Answer : (d) Trichoderma.

Which one of the following microbes forms symbiotic association with plants and helps them in their nutrition? (a) Azotobacter (b) Aspergillus (c) Glomus (d) Trichoderma

Description : Which one of the following microbes forms symbiotic association with plants and helps them in their nutrition? (a) Azotobacter (b) Aspergillus (c) Glomus (d) Trichoderma

Last Answer : (c) Glomus

Match the following list of microbes and their importance. Column I Column II A. Saccharomyces (i) Production of cerevisiae immuno- suppressive agent B. Monascus (ii) Ripening of Swiss purpureus cheese C. Trichoderma (iii)Commercial polysporum production of ethanol D. Propionibacterium (iv) Production of shermanii blood-cholesterol lowering agents (a) A-(iv), B-(ii), C-(i), D-(iii) (b) A-(iii), B-(i), C-(iv), D-(ii) (c) A-(iii), B-(iv), C-(i), D-(ii) (d) A-(iv), B-(iii), C-(ii),D-(i)

Description : Match the following list of microbes and their importance. Column I Column II A. Saccharomyces (i) Production of cerevisiae immuno- suppressive agent B. Monascus (ii) Ripening of Swiss purpureus cheese C. Trichoderma (iii)Commercial ... C-(i), D-(ii) (d) A-(iv), B-(iii), C-(ii),D-(i)

Last Answer : (c) A-(iii), B-(iv), C-(i), D-(ii)

Which one of the following microbes forms symbiotic association with plants and helps them in their nutrition ? (1) Trichoderma (2) Azotobacter (3) Aspergillus (4) Glomus

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Last Answer : (4) Glomus

Fan like appearance of coconut leaves is due to a. Mites b. Rhinoceros beetle c. Jassids d. Aphids

Description : Fan like appearance of coconut leaves is due to a. Mites b. Rhinoceros beetle c. Jassids d. Aphids

Last Answer : b. Rhinoceros beetle

Fan like appearance of coconut leaves is due to a. Mites b. Rhinoceros beetle c. Jassids d. Aphids

Description : Fan like appearance of coconut leaves is due to a. Mites b. Rhinoceros beetle c. Jassids d. Aphids

Last Answer : b. Rhinoceros beetle

Brassica - Bok Choy, Broccoli, Brussels Sprouts, Cabbage, Cauliflower, Collards, Colza, Hanover Salad, Kale, Kohlrabi, Mustard, Rutabaga, Turnip (Brass'ica)

Description : Brassica - Bok Choy, Broccoli, Brussels Sprouts, Cabbage, Cauliflower, Collards, Colza, Hanover Salad, Kale, Kohlrabi, Mustard, Rutabaga, Turnip (Brass'ica)

Last Answer : Rutabaga - In areas with short summers, seeds should be planted 6 to 9 inches apart in midsummer, elsewhere, in late summer. Planting in early spring is discouraged because temperatures less than 50 ... Kosak Hybrid Kohlrabi Tokyo Cross Hybrid Turnip Nagoya Mix Flowering Kale Tokyo Hybrid Mix

Microbe used for biocontrol of pest butterfly caterpillars is (a) Saccharomyces cerevisiae (b) Bacillus thuringiensis (c) Streptococcus sp. (d) Trichoderma sp.

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Last Answer : (b) Bacillus thuringiensis

Bt genes are introduced in cotton against the pest

Description : Bt genes are introduced in cotton against the pest

Last Answer : Ans. Cotton Bollworm

Bt cotton is resistant against the pest

Description : Bt cotton is resistant against the pest

Last Answer : Ans.Helicoverpa (Spotted bollworm) 19. Jute

Crop rotation is being adopted – (1) to increase the productivity of the land (2) to increase the crop yield (3) to increase the soil water (4) to increase the crop resistance to pests.

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Last Answer : (1) to increase the productivity of the land Explanation: Crop rotation is the practice of growing a series of dissimilar types of crops in the same area in sequential seasons for various ... the replenishment of nitrogen through the use of green manure in sequence with cereals and other crops.

White rust is an important fungal disease of? a. Wheat b. Mustard c. Rice d. Bajra e. Tea

Description : White rust is an important fungal disease of? a. Wheat b. Mustard c. Rice d. Bajra e. Tea

Last Answer : b. Mustard

White rust is an important fungal disease of – a) Wheat b) Mustard c) Rice d) Bajra

Description : White rust is an important fungal disease of – a) Wheat b) Mustard c) Rice d) Bajra

Last Answer : b) Mustard

Explain biological control of pests. -Biology

Description : Explain biological control of pests. -Biology

Last Answer : answer:

Biological control of agricultural pests, unlike chemical controls is

Description : Biological control of agricultural pests, unlike chemical controls is

Last Answer : Biological control of agricultural pests, unlike chemical controls is A. Toxic B. Polluting C. Self perpetuating D. Very expensive

Biological control of agricultural pests, unlike chemical control, is (a) self perpetuating (b) polluting (c) very expensive (d) toxic.

Description : Biological control of agricultural pests, unlike chemical control, is (a) self perpetuating (b) polluting (c) very expensive (d) toxic.

Last Answer : (a) self perpetuating

Two microbes found to be very useful in genetic engineering are (a) crown gall bacterium and Caenorhabditis elegans (b) Escherichia coli and Agrobacterium tumefaciens (c) Vibrio cholerae and a tailed bacteriophage (d) Diplococcus sp. and Pseudomonas sp

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Last Answer : (b) Escherichia coli and Agrobacterium tumefaciens

In bio fortification technique plant breeders use breeding to overcome (1) Loss due to insect pests (2) Decrease in food production (3) Deficiencies of micronutrients and vitamins (4) Loss due to plant diseases

Description : In bio fortification technique plant breeders use breeding to overcome (1) Loss due to insect pests (2) Decrease in food production (3) Deficiencies of micronutrients and vitamins (4) Loss due to plant diseases

Last Answer : (3) Deficiencies of rnicronutrients and vitamins Explanation: Biofortification refers to the breeding of crops to increase their nutritional value. The crops produced through biofortification method are always rich ... . This rice is rich in beta-carotene and provides vitamin A to the children.

In bio fortification technique plant breeders use breeding to overcome – (1) Loss due to insect pests (2) Decrease in food production (3) Deficiencies of micronutrients and vitamins (4) Loss due to plant diseases

Description : In bio fortification technique plant breeders use breeding to overcome – (1) Loss due to insect pests (2) Decrease in food production (3) Deficiencies of micronutrients and vitamins (4) Loss due to plant diseases

Last Answer : (3) Deficiencies of micronutrients and vitamins Explanation: Biofortification refers to the breeding of crops to increase their nutritional value. The crops produced through biofortification method are always rich in nutrients like iron, zinc and Vitamin A.

In bio fortification technique plant breeders use breeding to overcome (1) Loss due to insect pests (2) Decrease in food production (3) Deficiencies of micronutrients and vitamins (4) Loss due to plant diseases

Description : In bio fortification technique plant breeders use breeding to overcome (1) Loss due to insect pests (2) Decrease in food production (3) Deficiencies of micronutrients and vitamins (4) Loss due to plant diseases 

Last Answer : Deficiencies of micronutrients and vitamins

In Bt cotton, the Bt toxin present in plant tissue as protoxin is converted into active toxin due to(a) action of gut microorganisms (b) presence of conversion factors in insect gut (c) alkaline pH of the insect gut (d) acidic pH of the insect gut.

Description : In Bt cotton, the Bt toxin present in plant tissue as protoxin is converted into active toxin due to (a) action of gut microorganisms (b) presence of conversion factors in insect gut (c) alkaline pH of the insect gut (d) acidic pH of the insect gut.

Last Answer : (c) alkaline pH of the insect gut

Explain biological control of plant diseases? -Biology

Description : Explain biological control of plant diseases? -Biology

Last Answer : answer:

Crop plants grown in monoculture are (a) highly prone to pests (b) low in yield (c) free from intraspecific competition (d) characterised by poor root system.

Description : Crop plants grown in monoculture are (a) highly prone to pests (b) low in yield (c) free from intraspecific competition (d) characterised by poor root system.

Last Answer : a) highly prone to pests

Agronomy is a branch of Agriculture that deals with – a) Breeding of crop plants b) Principles of field management c) Principles and practice of crop production d) Protection of crops from Diseases and Pests

Description : Agronomy is a branch of Agriculture that deals with – a) Breeding of crop plants b) Principles of field management c) Principles and practice of crop production d) Protection of crops from Diseases and Pests

Last Answer : c) Principles and practice of crop production

Example of plant in which vegetative propagation is occurred by leaves is called a) Cannabisn b) Chrysanthemum c) Cryophyllum d) Brassica

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Last Answer : c) Cryophyllum

Trap crop for Cuscuta sp a). Small grains b). Chickpea c). Mustard d). All

Description : Trap crop for Cuscuta sp a). Small grains b). Chickpea c). Mustard d). All

Last Answer : d). All

Give biological classification of Mustard plant?

Description : Give biological classification of Mustard plant? 

Last Answer :  Kingdom- Plantae ™ Phylum- Anthophyt ™ Class -Dicotyledonae ™ Order -Capparales ™ Family -Brassicaceae ™ Genus -Brassica ™ Species -Brassica Campestris 

Study statement a-d (about organic farming) and find out the correct ones. (a) Utilises genetically modified crops like Bt cotton (b) Uses only natura

Description : Study statement a-d (about organic farming) and find out the correct ones. (a) Utilises genetically modified crops like Bt cotton (b) Uses only natura

Last Answer : Study statement a-d (about organic farming) and find out the correct ones. (a) Utilises genetically modified crops ... . a and b only D. b and c only

The alternate host for pearl millet rust is a. Brinjal b. Tomato c. Mustard d. Okra

Description : The alternate host for pearl millet rust is a. Brinjal b. Tomato c. Mustard d. Okra

Last Answer : a. Brinjal

Which one is the wrong pairing for the disease and its causal organism? (a) Black rust of wheat-Puccinia graminis (b) Loose smut of wheat-Ustilago nuda (c) Root knot of vegetables-Meloidogyne sp. (d) Late blight of potato-Alternaria solani

Description : Which one is the wrong pairing for the disease and its causal organism? (a) Black rust of wheat-Puccinia graminis (b) Loose smut of wheat-Ustilago nuda (c) Root knot of vegetables-Meloidogyne sp. (d) Late blight of potato-Alternaria solani

Last Answer : (d) Birds nest fungi and puffballs

Asseriton: Insect resistant transgenic cotton has been produced by inserting Bt gene Reason The Bt gene is derived form a bacterium

Description : Asseriton: Insect resistant transgenic cotton has been produced by inserting Bt gene Reason The Bt gene is derived form a bacterium

Last Answer : Asseriton: Insect resistant transgenic cotton has been produced by inserting Bt gene Reason The Bt ... If both the assertion and reason are false

Cultivation of Bt Cotton has been much in the news . The prefix "Bt" means

Description : Cultivation of Bt Cotton has been much in the news . The prefix "Bt" means

Last Answer : Cultivation of Bt Cotton has been much in the news . The prefix "Bt" means A. ... ligases D. carrying an endotoxin gene from bacillus thuringiensis

Bt cotton is

Description : Bt cotton is

Last Answer : Bt cotton is A. Transgenic plant B. Mutated plant C. Cloned plant D. Hydrid plant

Bt seed is associated with - (1) Rice (2) Wheat (3) Cotton (4) Oil seeds

Description : Bt seed is associated with - (1) Rice (2) Wheat (3) Cotton (4) Oil seeds

Last Answer : (3) Cotton Explanation: Cotton is the most popular of the Bt crops: it was planted on about 1 .8 million acres (728437 ha) in 1996 and 1997. The Bt gene was isolated and transferred ... genetically into the cotton seeds, protects the plants from bollworm (A. lepidoptora), a major pest of cotton.

Write a note on BT Cotton.

Description : Write a note on BT Cotton.

Last Answer : BT Cotton is a genetically modified or transgenic plant. It is a new variety in which a gene isolated from a bacterium called Bacillus thuringiensis has been newly introduced. The gene us responsible for producing a toxin which can kill the boll worm that attack the cotton plants.

Select the correct statement about biodiversity. (a) The desert areas of Rajasthan and Gujarat have a very high level of desert animal species as well as numerous rare animals. (b) Large scale planting of Bt cotton has no adverse effect on biodiversity. (c) Western ghats have a very high degree of species richness and endemism. (d) Conservation of biodiversity is just a fad pursued by the developed countries.

Description : Select the correct statement about biodiversity. (a) The desert areas of Rajasthan and Gujarat have a very high level of desert animal species as well as numerous rare animals. (b) Large scale ... and endemism. (d) Conservation of biodiversity is just a fad pursued by the developed countries.

Last Answer : (c) Western ghats have a very high degree of species richness and endemism.

Match the following columns and select the correct option. Column-I Column-II (A) Bt cotton (i) Gene therapy (B) Adenosine (ii) Cellular defence deaminase deficiency (C) RNAi (iii) Detection of HIV infection (D) PCR (iv) Bacillus thuringiensis (A) (B) (C) (D) (a) (iv) (i) (ii) (iii) (b) (iii) (ii) (i) (iv) (c) (ii) (iii) (iv) (i) (d) (i) (ii) (iii) (iv)

Description : Match the following columns and select the correct option. Column-I Column-II (A) Bt cotton (i) Gene therapy (B) Adenosine (ii) Cellular defence deaminase deficiency (C) RNAi (iii) Detection of HIV infection (D) PCR (iv) Bacillus ... (i) (iv) (c) (ii) (iii) (iv) (i) (d) (i) (ii) (iii) (iv)

Last Answer : (a) (iv) (i) (ii) (iii)

Which of the following Bt crops is being grown in India by the farmers? (a) Brinjal (b) Soybean (c) Maize (d) Cotton

Description : Which of the following Bt crops is being grown in India by the farmers? (a) Brinjal (b) Soybean (c) Maize (d) Cotton

Last Answer : (d) Cotton

Consider the following statements (A–D) about organic farming. (A) Utilizes genetically modified crops like Bt cotton (B) Uses only naturally produced inputs like compost (C) Does not use pesticides and urea (D) Produces vegetables rich in vitamins and minerals Which of the above statements are correct? (a) B, C and D (b) C and D only (c) B and C only (d) A and B only

Description : Consider the following statements (A-D) about organic farming. (A) Utilizes genetically modified crops like Bt cotton (B) Uses only naturally produced inputs like compost (C) Does not use pesticides and urea (D) Produces vegetables ... C and D (b) C and D only (c) B and C only (d) A and B only

Last Answer : (c) B and C only

The area under Bt – cotton in India is about (A) 6.4 mha (B) 5.4 mha (C) 4.4 mha (D) 3.4 mha

Description : The area under Bt – cotton in India is about (A) 6.4 mha (B) 5.4 mha (C) 4.4 mha (D) 3.4 mha

Last Answer : (A) 6.4 mha

Bt cotton is resistant to bollworm, it is due to (a) Bt is repellent to bollworm(b) Bt is contact poison for bollworm (c) Bt is stomach poison; it changes the permeability of stomach due to generation of pores in alkaline environment of stomach (d) Bt is causing death due to asphagsiation of insect

Description : Bt cotton is resistant to bollworm, it is due to (a) Bt is repellent to bollworm(b) Bt is contact poison for bollworm (c) Bt is stomach poison; it changes the permeability of stomach due to generation of pores in alkaline environment of stomach (d) Bt is causing death due to asphagsiation of insect

Last Answer : (c) Bt is stomach poison; it changes the permeability of stomach due to generation of pores in alkaline environment of stomach