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Published on: 12/06/2021
QB365 provides detailed and simple solution for every Book back Questions in class 10 Science Subject. It will helps to get more idea about question pattern in every book back questions with solution.
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Questions + Answers key
Take MCQ Science Test1.
Discuss the importance of biotechnology in the field of medicine.
2.
Biofortification may help in removing hidden hunger. How?
3.
What are the effects of hybrid vigour in animals?
4.
'P’ is a gene required for the synthesis of vitamin A. It is integrated with genome of ‘Q’ to produce genetically modified plant ‘R’.
i. What is P, Q and R?
ii. State the importance of ‘R’ in India.
5.
Organic farming is better than Green Revolution. Give reasons.
1.
(i) Insulin used in the treatment of diabetes.
(ii) Human growth hormone used for treating children with growth deficiencies.
(iii) Blood clotting factors are developed to treat haemophilia.
(iv) Tissue plasminogen activator is used to dissolve blood clots and prevent heart attack.
(v) Development of vaccines against various diseases like Hepatitis B and rabies.
2.
(i) Biofortification is the scientific process of developing crop plants enriched with high levels of desirable nutrients like vitamins, proteins and minerals.
(ii) Production of Bio fortification crops help in removing hidden hunger.
Examples:
(i) Protina, Shakti and Rathna are lysine rich maize hybrids (developed in India).
(ii) Atlas 66, a protein rich wheat variety.
(iii) Iron rich fortified rice variety.
(iv) Vitamin A enriched carrots, pumpkin and spinach.
(v) So in this way, Biofortification may help in removing hidden hunger.
3.
(i) Increased production of milk by cattle.
(ii) Increased production of egg by poultry.
(iii) High quality of meat is produced.
(iv) Increased growth rate in domesticated animals.
4.
i. What is P, Q and R?
a) P - Beta Carotene gene.
b) Q - improved variety of rice with best nutritional value.
c) R - prevent vitamin A deficiency synthesis of Beta carotene.
ii. State the importance of 'R' in India.
R - The transgenic plants are much stable with improved nutritional value.
5.
Reason:
(i) No chemicals fertilisers are used on the soil.
(ii) No pesticides are sprayed on the plants.
(iii) The seeds used to produce plants have not been genetically altered.
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Tamilnadu Stateboard 10th Standard Subjects
Tamilnadu Stateboard Standards