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

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

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

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

Tissue culture is a good technique to a) Cross two varieties b) Rapidly increase the size of a trees by strengthening the stem c) Eliminate virus d) Improve yield of crops

Description : Tissue culture is a good technique to a) Cross two varieties b) Rapidly increase the size of a trees by strengthening the stem c) Eliminate virus d) Improve yield of crops 

Last Answer : c) Eliminate virus 

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

Find out the correct sentence. Hybridisation means crossing between genetically dissimilar plants Cross between two varieties is called as inter speci

Description : Find out the correct sentence. Hybridisation means crossing between genetically dissimilar plants Cross between two varieties is called as inter speci

Last Answer : Find out the correct sentence. Hybridisation means crossing between genetically dissimilar plants Cross between two ... (iii) D. (iii) and (iv)

Grafting is employed for better and quicker yield of varieties of: (1) Apple (2) Mango (3) Citrus (4) Tea

Description : Grafting is employed for better and quicker yield of varieties of: (1) Apple (2) Mango (3) Citrus (4) Tea

Last Answer : Ans. ((a))

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))

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

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

Varieties of vegetables such as cabbage, broccoli and cauliflower have been produced from a wild cabbage species. Such process of producing new varieties of living organisms is called (1) Natural selection (2) Artificial selection (3) Speciation (4) Genetic drift.

Description : Varieties of vegetables such as cabbage, broccoli and cauliflower have been produced from a wild cabbage species. Such process of producing new varieties of living organisms is called (1) Natural selection (2) Artificial selection (3) Speciation (4) Genetic drift.

Last Answer : (2) Artificial selection

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.

Last Answer : (d) natural selection.

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

Last Answer : D) Gene flow

The pH in soils can be raised by adding: a) Sand b) lime c) sulphur d) nitrogen

Description : The pH in soils can be raised by adding: a) Sand b) lime c) sulphur d) nitrogen

Last Answer : b) lime

‘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.

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

Breeding of crops with high levels of minerals, vitamins and proteins is called (a) somatic hybridisation (b) biofortification (c) biomagnification (d) micropropagation.

Description : Breeding of crops with high levels of minerals, vitamins and proteins is called (a) somatic hybridisation (b) biofortification (c) biomagnification (d) micropropagation.

Last Answer : (b) biofortification

Advantages of Artificial Methods of Vegetative Reproduction include a) Crops with better quality b) Crops with more yield c) Ability to produce plants with desirable qualities d) All of these

Description : Advantages of Artificial Methods of Vegetative Reproduction include a) Crops with better quality b) Crops with more yield c) Ability to produce plants with desirable qualities d) All of these 

Last Answer : c) Ability to produce plants with desirable qualities 

In cold places frost damage can be reduced in horticultural crops using these methods except a) Overhead sprinklers at night b) Green houses and shade nets c) Wind breaks placement d) Appropriate fungicide application

Description : In cold places frost damage can be reduced in horticultural crops using these methods except a) Overhead sprinklers at night b) Green houses and shade nets c) Wind breaks placement d) Appropriate fungicide application

Last Answer : b) Green houses and shade nets

Horticulture is the study that includes a) Fruits, vegetables and flowers b) All food crops c)Vegetable gardens and lawns near hotels only d)Some bush crops and apples

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Last Answer : a) Fruits, vegetables and flowers

Who recognized the importance of floral characters in Taxonomy? Why are floral characters more useful than vegetative characters in classification?

Description : Who recognized the importance of floral characters in Taxonomy? Why are floral characters more useful than vegetative characters in classification? 

Last Answer : Ans: Linnaeus. Floral characters show more variations and more stable than vegetative characters. 

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. 

What cross is useful in determining the genetic purity of gametes? Show with an example.

Description : What cross is useful in determining the genetic purity of gametes? Show with an example.  

Last Answer : Ans: Test cross. If it is done between an individual with Tt genotype and the recessive parent with tt genotype, 50% of the individuals obtained will be tall and the remaining are dwarf. 

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

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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

Description : 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

Last Answer : (a) i & ii only

Select the High Yielding Varieties of seed-crops developed under Green Revolution in India. (1) Rice, Wheat, Pulses, Oil seeds and Sugarcane (2) Maize, Black-gram, Jowar, Coffee arid Tea (3) Rice, Wheat, Jowar, Bajra, and Maize (4) Wheat, Rice, Sugarcane, Pulses and Maize

Description : Select the High Yielding Varieties of seed-crops developed under Green Revolution in India. (1) Rice, Wheat, Pulses, Oil seeds and Sugarcane (2) Maize, Black-gram, Jowar, Coffee arid Tea (3) Rice, Wheat, Jowar, Bajra, and Maize (4) Wheat, Rice, Sugarcane, Pulses and Maize

Last Answer : (1) Rice, Wheat, Pulses, Oil seeds and Sugarcane Explanation: The growth rates of area, production and yield of food grains in India can be divided into two broad periods the period ... Varieties of wheat, rice, pulses, oilseeds and sugarcane were development under Green Revolution in India.

In which of the following crops GM varieties are available for cultivation in India (A) Mustard (B) Cotton (C) Soybean (D) All of the above

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Mixed farming incorporates a mixture or combination of which of the following? a. Crops and Forest Trees b. Different Varieties of Crops c. Crops and Horticulture Plants d. Crops and Livestock e. None of these

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Last Answer : d. Crops and Livestock

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Last Answer : Rice, Wheat, Pulses, Oil seeds and Sugarcane

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Considering corms of natural vegetative propagation, buds are present at a) Front side of corm b) Backside of corm c) Top of corm d) End of corm

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Last Answer : c) Top of corm

Example of natural vegetative propagation does not include a) Corals b) bulbs c) corms d) rhizomes

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Last Answer : a) natural vegetative propagation

Disadvantages of natural vegetative propagation includes a) lack of dispersal mechanisms b) no fertilization is involved c) area is quickly colonized d) daughter plants can grow quickly

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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

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