Enumerate four objectives for improving the nutritional quality of different crops for the health benefits of the human population by the process of "Biofortification". - Biology


Enumerate four objectives for improving the nutritional quality of different crops for the health benefits of the human population by the process of "Biofortification".



Biofortification involves the breeding of crops to increase their nutritional value. The objectives for biofortification are as follows:

1. To improve protein content and quality
2. To improve oil content and quality
3. To improve vitamin content
4. To improve micronutrient and mineral content
Concept: Plant Breeding
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2014-2015 (March) Delhi Set 3

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What is ‘biofortification’?

Which steps would you follow to develop a new variety of crop plant by selective breeding?

What is plant breeding?

In Brassica (rapeseed, mustard)........................ varietys is resistant to Aphids.

(a) Pusa A-4
(b) Pusa Gaurav
(c) Pusa Sawni
(d) . Pusa Shubra

Vijaya, Padma, Kanti and Jayanti are high-yielding varieties of ______.

What is emasculation?

In an agricultural field there is a prevalence of the following organisms and crop diseases which are affecting the crop yield badly:
(a) White rust
(b) Leaf and stripe rust
(c) Black rot
(d) Jussids

Recommend the varieties of crops the farmers should grow to get rid of the existing problem and thus improve the crop yiel.

What is heterosis?

What are analogous organs? Describe with one example from the plant kingdom.

Define Osmotic pressure

What are components of water potential? Explain

Definition and importance of Imbibition

Describe the mass flow hypothesis for translocation of organic solutes (food) in plants.

Answer each question in ‘One’ sentence only:

Define stock and scion.

Explain selective breeding. Give any 'two' examples and their nutrients obtained by selective breeding. 

Answer the following question:

Give the scientific term used for the preservation of germplasm at a very low temperature.

Give a reason for the following: 

Bagging is essential in artificial hybridization.

Wheat -Atlas 66 has high contents of ______.

While studying the history of the domestication of various cultivated plants _______ were recognized earlier.

Plants having similar genotypes produced by plant breeding are called

Importing better varieties and plants from outside and acclimatizing them to the local environment is called

Crosses between the plants of the same variety are called

Which one of the following crop varieties correct matches with its resistance to disease?

Variety Resistance to disease
a) Pusa Komal Bacterial blight
b) Pusa Sadabahar White rust
c) Pusa Shubhra Chilli mosaic virus
d) Brassica Pusa swarnim

Explain the best-suited type followed by plant breeders at present?

Column - I contains names of host plant while Column - II contains names of viral dieases. Find the correct option.

  Column-I   Column-II
(I) Banana (p) little leaf
(II) Sugarcane (q) bunchy top
(III) Papaya (r) leaf roll
(IV) Brinjal (s) grassy shoot
    (t) leaf curl

Smooth leaved and necterless cotton varieties are NOT affected by ____________.

In hybridization experiments 'true breeding' means off-springs show ____________.

The science of changing and improving the heredity of plants is called ______

Which method of plant breeding has been used to develop a powdery mildew-resistant variety of moong beans?

Give any four advantages of mutation breeding.

Animal husbandry and plant breeding programmes are the examples of:

The biggest constraint of plant breeding is:

Breeding of crops with high levels of minerals:

Mechanism of fast Speciation in crop plants is ______.

If a diploid cell is treated with colchicine then it becomes:

Polyploidy leads to the rapid formation of new species because:

The plant which is used for Studying hybrid vigour or heterocyst:

Shakti, Rattan and protina are three important lysine-rich varieties of:

Which one of the following pathogens causes cancer disease?

The biggest constraint of plant breeding is ______.

Sugarcane which grow in North India, and which do not grow in north India. 

Match the columns-

  Column A   Column B
A. Kalyan Sona 1. Rice
B. Pusa sawani 2. Wheat
C. IR - 8 3. Okra

Mutations in plant cells can be induced by ______

Which of the following is not an objective of Biofortification in crops?

Which one of the following combination would a sugarcane farmer look for in the sugarcane crop?

The scientific process by which crop plants are enriched with certain desirable nutrients is called ______.

The agriculture sector of India employs about ______.

33 percent of India’s Gross Domestic Product comes from ______.

What is meant by ‘hidden hunger’?

What is emasculation? Why and when is it done?

Give two important contributions of Dr. M. S. Swaminathan.

Discuss briefly the technology that made us self-sufficient in food production.

How the resistance in crops can be developed?

Bioforified crops are ______.


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