A plant breeder: waists to develop a disease resistant variety. What should he do first? a) Hybridisation b) Mutation c) Selection d) Production of crop

A plant breeder: waists to develop a disease resistant variety. What should he do first? a) Hybridisation b) Mutation c) Selection d) Production of crop 
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 c) Selection
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A plant breeder: waists to develop a disease resistant variety. What should he do first?(a) Hybridisation (b) Mutation (c) Selection (d) Production of crop

Description : A plant breeder: waists to develop a disease resistant variety. What should he do first?(a) Hybridisation (b) Mutation (c) Selection (d) Production of crop

Last Answer : (c) Selection

The desired varieties of economically useful crops are raised bya) Vernalization b) Mutation c) Natural selection d) hybridisation

Description : The desired varieties of economically useful crops are raised bya) Vernalization b) Mutation c) Natural selection d) hybridisation 

Last Answer :  d) hybridisation 

‘Himgiri’ developed by hybridisation and selection for disease resistance against rust pathogens is a variety o(a) chilli (b) maize (c) sugarcane (d) wheat.f

Description : ‘Himgiri’ developed by hybridisation and selection for disease resistance against rust pathogens is a variety of (a) chilli (b) maize (c) sugarcane (d) wheat.

Last Answer : (d) wheat.

The desired varieties of economically useful crops are raised by (a) vemalisation (b) mutation (c) natural selection (d) hybridisation

Description : The desired varieties of economically useful crops are raised by (a) vemalisation (b) mutation (c) natural selection (d) hybridisation

Last Answer : (d) hybridisation

In plant breeding programmes, the entire collection (of plants/seeds) having all the diverse alleles for all genes in a given crop is called (a) evaluation and selection of parents (b) germplasm collection (c) selection of superior recombinants (d) cross-hybridisation among the selected parents.

Description : In plant breeding programmes, the entire collection (of plants/seeds) having all the diverse alleles for all genes in a given crop is called (a) evaluation and selection of parents (b) germplasm collection (c) selection of superior recombinants (d) cross-hybridisation among the selected parents.

Last Answer : (b) germplasm collection

The seed of a crop variety produced by the breeder which is small in quantity is said to be

Description : The seed of a crop variety produced by the breeder which is small in quantity is said to be

Last Answer : Ans. Nucleus seed

How would you increase the yield of maize crop? (a) Evolve high yielding varieties of seeds to suit different agroclimatic regions (b) Develop high yielding varieties (c) Develop disease-resistant varieties (d) Develop early and very early maturing varieties suitable for rainfall areas

Description : How would you increase the yield of maize crop? (a) Evolve high yielding varieties of seeds to suit different agroclimatic regions (b) Develop high yielding varieties (c) Develop disease-resistant varieties (d) Develop early and very early maturing varieties suitable for rainfall areas

Last Answer : Ans: (a)

1. Biofortification is a method of breeding crops for a) Increasing the amount of production b) To produce disease resistant variety c) To improve the nutritional quality d) To produce high amount of vitamin

Description : 1. Biofortification is a method of breeding crops for a) Increasing the amount of production b) To produce disease resistant variety c) To improve the nutritional quality d) To produce high amount of vitamin

Last Answer : c) To improve the nutritional quality

Increasing high skin cancer and high mutation rate are a) O3 depletion b) Acid rain c) CO pollution d) CO2 Pollution.

Description : Increasing high skin cancer and high mutation rate are a) O3 depletion b) Acid rain c) CO pollution d) CO2 Pollution.

Last Answer : a) O3 depletion

Breeding method mostly used for development of disease resistance variety is — a. Pedigree methodb. Selectionc. Back crossd. Mutation breeding

Description : Breeding method mostly used for development of disease resistance variety is — a. Pedigree method b. Selection c. Back cross d. Mutation breeding

Last Answer : c. Back cross

Cyanide resistant respiration is characteristic of: (a) Viruses (b) Bacteria (c) Plants (d) Animals

Description : Cyanide resistant respiration is characteristic of: (a) Viruses (b) Bacteria (c) Plants (d) Animals

Last Answer : Ans. ((c))

Consider the following statements: 1. India is the original home of the cotton plant. 2. India is the first country in the world to develop hybrid cotton variety leading to increased production. Which of these statements is/are correct ? [IAS 2003] (a) Only 1 (b) Only 2 (c) Both 1 and 2 (d) Neither 1 nor 2

Description : Consider the following statements: 1. India is the original home of the cotton plant. 2. India is the first country in the world to develop hybrid cotton variety leading to increased production. Which of these statements is/are correct ... ] (a) Only 1 (b) Only 2 (c) Both 1 and 2 (d) Neither 1 nor 2

Last Answer : Ans: (c)

Deciduous forests have (a) Variety of grasses (b) Broad-leaved trees (c) narrow-leaved trees (d) Variety of crocodiles

Description : Deciduous forests have (a) Variety of grasses (b) Broad-leaved trees (c) narrow-leaved trees (d) Variety of crocodiles

Last Answer : Ans. ((b))

A variety or strain produced by horticultural or agricultural techniques and not normally found in natural population is called a) Hybrid b) Tissue culture c) GMO d) Cultivar

Description : A variety or strain produced by horticultural or agricultural techniques and not normally found in natural population is called a) Hybrid b) Tissue culture c) GMO d) Cultivar

Last Answer : d) Cultivar

Molya disease resistant variety of barley is

Description : Molya disease resistant variety of barley is

Last Answer : Ans.RD 2052

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

Which of these is not a variety of seeds? a. Composite Seed b. Breeder Seed c. Mutant Seed d. Hybrid Seed

Description : Which of these is not a variety of seeds? a. Composite Seed b. Breeder Seed c. Mutant Seed d. Hybrid Seed

Last Answer : c. Mutant Seed

The quickest method of plant breeding is — a. Mutation breeding b. Back cross c. Heterosis breeding d. Selection

Description : The quickest method of plant breeding is — a. Mutation breeding b. Back cross c. Heterosis breeding d. Selection

Last Answer : a. Mutation breeding

When multiple embryo develop from different embryosac it is called as

Description : When multiple embryo develop from different embryosac it is called as

Last Answer : When multiple embryo develop from different embryosac it is called as – False polyembryony

High yielding plants can be produced by (1) Crop Rotation (2) Hybridisation (3) Inter-cropping (4) Mixed - cropping

Description : High yielding plants can be produced by (1) Crop Rotation (2) Hybridisation (3) Inter-cropping (4) Mixed - cropping

Last Answer : (2) Hybridisation Explanation: Operation Flood in India, a project of the National Dairy Development Board (NDDB) was the world's biggest dairy development programme which made India, a milk-deficient nation, ... world, surpassing the USA in 1998, with about 17 percent of global output in 2010-11.

Among the following States, which one has the most suitable climatic conditions for the cultivation of a large variety of orchids with minimum cost of production, and can develop an export oriented industry in this field? [CSAT 2011] (a) Andhra Pradesh (b) Arunachal Pradesh (c) Madhya Pradesh (d) Uttar Pradesh

Description : Among the following States, which one has the most suitable climatic conditions for the cultivation of a large variety of orchids with minimum cost of production, and can develop an export oriented industry in ... 2011] (a) Andhra Pradesh (b) Arunachal Pradesh (c) Madhya Pradesh (d) Uttar Pradesh

Last Answer : Ans: (b)

The high yielding hybrid crop varieties to exploit hybrid vigour, the farmers need to Purchase fresh hybrid seed every year because: (a) Hybrid vigour is not long standing due to inbreeding depression (b) They are not allowed to grow their own seed (c) It is always associated with 4ncreased heterozygosity (d) Government has accepted Dunkel’s proposals

Description : The high yielding hybrid crop varieties to exploit hybrid vigour, the farmers need to Purchase fresh hybrid seed every year because: (a) Hybrid vigour is not long standing due to inbreeding ... (c) It is always associated with 4ncreased heterozygosity (d) Government has accepted Dunkel's proposals

Last Answer : Ans. ((a))

How are mutations useful for crop improvement?

Description : How are mutations useful for crop improvement? 

Last Answer : Ans: Mutations bring about genetic variability in crops. Some of them are desirable and such plants are selected and further developed by hybridization. 

Aims of plant breeding are to produce a) Disease-free varieties b) High-yielding varieties c) Early-maturing varieties d) all of the above

Description : Aims of plant breeding are to produce a) Disease-free varieties b) High-yielding varieties c) Early-maturing varieties d) all of the above

Last Answer : d) all of the above

Cancer cells may become resistant to amethopterin by (A) Developing mechanisms to destroy amethopterin (B) Amplification of dihydrofolate reducatse gene (C) Mutation in the dihydrofolate reductase gene so that the enzyme is no longer inhibited by amethopterin (D) Developing alternate pathway of thymidylate synthesis

Description : Cancer cells may become resistant to amethopterin by (A) Developing mechanisms to destroy amethopterin (B) Amplification of dihydrofolate reducatse gene (C) Mutation in the dihydrofolate reductase ... is no longer inhibited by amethopterin (D) Developing alternate pathway of thymidylate synthesis

Last Answer : Answer : B

Widespread and prolonged used of an antibiotic leads to emergence of drug resistant strains because antibiotics (a) Induce mutation in the bacteria (b) Promote conjugation among bacteria (c) Allow resistant strains to propagate preferentially (d) All of the above

Description : Widespread and prolonged used of an antibiotic leads to emergence of drug resistant strains because antibiotics (a) Induce mutation in the bacteria (b) Promote conjugation among bacteria (c) Allow resistant strains to propagate preferentially (d) All of the above

Last Answer : Ans: C

Widespread and prolonged use of an antibiotic leads to emergence of drug resistant strains because antibiotics: A. Induce mutation in the bacteria B. Promote conjugation among bacteria C. Allow resistant strains to propagate preferentially D. All of the above

Description : Widespread and prolonged use of an antibiotic leads to emergence of drug resistant strains because antibiotics: A. Induce mutation in the bacteria B. Promote conjugation among bacteria C. Allow resistant strains to propagate preferentially D. All of the above

Last Answer : C. Allow resistant strains to propagate preferentially

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.

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Reduction or elimination of dormancy in crop plant is due to : a. Domestication b. Hybridization c. Mutation h. Acclimatization

Description : Reduction or elimination of dormancy in crop plant is due to : a. Domestication b. Hybridization c. Mutation h. Acclimatization

Last Answer : Acclimatization

Crop Variety Resistance to the disease

Description : 5. Crop Variety Resistance to the disease Wheat -------- Leaf and stripe rust

Last Answer : Ans- Himgiri

The new varieties of plants are produced by (a) introduction and mutation (b) selection and introduction (c) selection and hybridization (d) mutation and selection.

Description : The new varieties of plants are produced by (a) introduction and mutation (b) selection and introduction (c) selection and hybridization (d) mutation and selection.

Last Answer : (c) selection and hybridization

Industrial melanism is an example of (a) mutation (b) Neo-Lamarckism (c) Neo-Darwinism (d) natural selection.

Description : Industrial melanism is an example of (a) mutation (b) Neo-Lamarckism (c) Neo-Darwinism (d) natural selection.

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Which of the following(s) is/are found in Genetic Algorithms? (i) evolution (ii) selection (iii) reproduction (iv) mutation (a) i & ii only (b) i, ii & iii only (c) ii, iii & iv only

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Last Answer : (a) i & ii only

27. A ‘single step-large mutation’ is known as ... b) Branching descent b) Natural Selection c) Saltation d) Gene Migration

Description : 27. A ‘single step-large mutation’ is known as ... b) Branching descent b) Natural Selection c) Saltation d) Gene Migration

Last Answer : c) Saltation

7. A ‘single step-large mutation’ is known as ... a) Branching descent b) Natural Selection c) Saltation d) Gene Migration

Description : 7. A ‘single step-large mutation’ is known as ... a) Branching descent b) Natural Selection c) Saltation d) Gene Migration

Last Answer : c) Saltation

_______________ acts to inhibit reproductive isolation. A) Mutation B) Natural selection C) Genetic drift D) Gene flow

Description : _______________ acts to inhibit reproductive isolation. A) Mutation B) Natural selection C) Genetic drift D) Gene flow

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Description : Cryopreservation is a technique used for a) Crystallization of food b) Food packing c) Seed saving d) Preservation of excess production of vegetables

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Description : All the following statements about retino blastoma are true except (A) At least two mutations are required for its development (B) One mutation can be inherited from a parent (C) Children ... mutation develop retinoblastoma at a younger age (D) RB 1 gene promotes the development of retinoblastoma

Last Answer : Answer : D

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Which of the following statement is correct? (1) The causal organism for foolish seedling disease is the source of gibberellin (2) Abscisic acid is a growth promoter (3) The ratio of auxin : cytokinin control cell differentiation (4) Bolting of cabbage can be induced by treatment with IAA

Description : Which of the following statement is correct? (1) The causal organism for foolish seedling disease is the source of gibberellin (2) Abscisic acid is a growth promoter (3) The ratio of auxin : cytokinin control cell differentiation (4) Bolting of cabbage can be induced by treatment with IAA

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