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Published on: 11/09/2019
Breeding and Biotechnology
Download Tamil Nadu 10th Standard Science question papers, model tests, one-mark questions, important questions, and public exam papers in PDF format. Free study materials and answer keys for TN State Board students.
Questions + Answers key
Take MCQ Science Test1.
rDNA is a
vector DNA
circular DNA
recombinant of vector DNA and desired DNA
satellite DNA
2.
Which of the following is used to produce products useful to humans by biotechnology techniques?
enzyme from organism
live organism
vitamins
both (a) and (b)
3.
Himgiri developed by hybridisation and selection for disease resistance against rust pathogens is a variety of _______.
chilli
maize
sugarcane
wheat
4.
5.
In gene cloning the DNA of interest is integrated in a __________.
6.
Similar DNA fingerprinting is obtained for __________.
7.
Rice normally grows well in alluvial soil, but _________ is a rice variety produced by mutation breeding that grows well in saline soil.
8.
A protein rich wheat variety is ________.
9.
Golden rice
10.
Bt toxin
11.
TMV – 2
12.
Saccharum
13.
Sonalika
14.
Assertion: Colchicine reduces the chromosome number.
Reason: It promotes the movement of sister chromatids to the opposite poles.
a) Assertion is correct and reason is wrong
b) Reason is correct and the assertion is wrong
c) Both assertion and reason is correct
d) Both assertion and reason is wrong.
15.
Name the types of stem cells.
16.
Define genetic engineering.
17.
Differentiate between outbreeding and inbreeding.
18.
Discuss the importance of biotechnology in the field of medicine.
1.
(c)
recombinant of vector DNA and desired DNA
2.
(d)
both (a) and (b)
3.
(d)
wheat
4.
(b)
5.
( )
Suitable vector (Plasmid)
6.
( )
identical twins
7.
( )
atomita 2
8.
( )
Atlas 66
9.
Beta carotene
10.
Bacillus thuringienesis
11.
Ground nut
12.
Sugarcane
13.
Semi-dwarf wheat
14.
d) Both assertion and reason is wrong
15.
Embryonic stem cells, Adult stem cell or somatic stem cell.
16.
Genetic engineering is the manipulation and transfer of genes from one organism to another organism to create a new DNA called as recombinant DNA (rDNA)
17.
| S.No. |
Outbreeding |
Inbreeding |
|---|---|---|
| i. | Cross between two different species (unrelated) with desirable features of economic value are mated. | Mating of closely related animals within the same breed for about 4 - 6 generations. |
| ii. | It is the breeding of unrelated animals. The offsprings formed are called hybrids. | Superior males and superior females of the same breed are identified and mated in pairs. |
| iii. | The hybrids are stronger and vigorous than their parents. E.g: Mule | It helps in the accumulation of superior genes and elimination of genes which are undesirable. E.g: Hisardale. |
18.
(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.
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Tamilnadu Stateboard 10th Standard Subjects
Tamilnadu Stateboard Standards
