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Assertion & Reason Test: Biotechnology & Its Applications - NEET MCQ


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10 Questions MCQ Test Biology Class 12 - Assertion & Reason Test: Biotechnology & Its Applications

Assertion & Reason Test: Biotechnology & Its Applications for NEET 2024 is part of Biology Class 12 preparation. The Assertion & Reason Test: Biotechnology & Its Applications questions and answers have been prepared according to the NEET exam syllabus.The Assertion & Reason Test: Biotechnology & Its Applications MCQs are made for NEET 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Assertion & Reason Test: Biotechnology & Its Applications below.
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Assertion & Reason Test: Biotechnology & Its Applications - Question 1

Directions : In the following questions a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as :

Assertion (A) : An American company is allowed the company to sell a ‘new’ variety of Basmati rice.

Reason (R) : Indian Basmati was crossed with semidwarf varieties and claimed as a novelty.

Detailed Solution for Assertion & Reason Test: Biotechnology & Its Applications - Question 1
In 1997, an American company got patent rights on Basmati rice through the US Patent and Trademark Office. This allowed the company to sell a ‘new’ variety of Basmati which had actually been derived from Indian farmer’s varieties. Indian Basmati was crossed with semi-dwarf varieties and claimed as a novelty.
Assertion & Reason Test: Biotechnology & Its Applications - Question 2

Directions : In the following questions a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as :

Assertion (A) : Transgenic mice are being used to test the safety of the polio vaccine.

Reason (R) : It could replace the use of monkeys to test the safety of batches of the vaccine.

Detailed Solution for Assertion & Reason Test: Biotechnology & Its Applications - Question 2
Safety of polio vaccine is tested on transgenic mice, before using this vaccine on humans. It is because mice are supposed to be very much similar to human beings in their genomic arrangement. This is the reason mice are used in most medical research.
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Assertion & Reason Test: Biotechnology & Its Applications - Question 3

Directions : In the following questions a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as :

Assertion (A) : Transgenic animals had their DNA manipulated.

Reason (R) : 95% of all existing transgenic animals are mice.

Detailed Solution for Assertion & Reason Test: Biotechnology & Its Applications - Question 3
Transgenic animals originate from recombinant DNA.
Assertion & Reason Test: Biotechnology & Its Applications - Question 4

Directions : In the following questions a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as :

Assertion (A) : Ti plasmid (tumour-inducing plasmid) of Agrobacterium tumefaciens is used as a cloning vector.

Reason (R) : Ti plasmid integrates a segment of its DNA, termed T-DNA into the chromosomal DNA of its host plant cells.

Detailed Solution for Assertion & Reason Test: Biotechnology & Its Applications - Question 4

Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).

The Ti plasmid (tumour-inducing plasmid) of Agrobacterium tumefaciens is used as a cloning vector. Ti plasmid integrates a segment of its DNA, termed T-DNA into the chromosomal DNA of its host plant cells. This is the mechanism that allows for the transfer of genetic information from the plasmid to the plant cell, which is used to genetically modify the plant. The T-DNA region contains genes that are responsible for the formation of a tumour and also contains genes that can be used for genetic engineering. Therefore, the reason (R) explains the assertion (A) correctly.

Assertion & Reason Test: Biotechnology & Its Applications - Question 5

Directions : In the following questions a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as :

Assertion (A) : ‘Bt’ in Bt toxin represents Bacillus thuringiensis.

Reason (R) : ‘Bt’ toxin is produced by a virus.

Detailed Solution for Assertion & Reason Test: Biotechnology & Its Applications - Question 5

Assertion (A) is true, but reason (R) is wrong as Bt toxin is produced by a bacterium called Bacillus thuringiensis.

Assertion & Reason Test: Biotechnology & Its Applications - Question 6

Directions : In the following questions a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as :

Assertion (A) : Norman E. Borlaug was the father of "Green revolution".

Reason (R) : Green revolution is the period when there is significant increase in agricultural productivity of grains (specially wheat and rice).

Detailed Solution for Assertion & Reason Test: Biotechnology & Its Applications - Question 6

The Green Revolution was an endeavour initiated by Norman Borlaug in the 1960s. He is known as the 'Father of Green Revolution' in world. It led to him winning the Nobel Peace Prize in 1970 for his work in developing High Yielding Varieties (HYVs) of wheat. In India, the Green Revolution was mainly led by M.S. Swaminathan. The Green Revolution resulted in a great increase in production of food grains (especially wheat and rice) due to the introduction into developing countries of new, high-yielding variety seeds, beginning in the mid-20th century. Its early dramatic successes were in Mexico and the Indian subcontinent. The Green Revolution, spreading over the period from 1967-68 to 1977-78, changed India’s status from a food-deficient country to one of the world's leading agricultural nations.

Assertion & Reason Test: Biotechnology & Its Applications - Question 7

Directions : In the following questions a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as :

Assertion (A) : Genetically modification makes crops more tolerant to abiotic stress (cold, drought etc.)

Reason (R) : Genetically Modified Organisms (GMO) genes have been altered by manipulation.

Detailed Solution for Assertion & Reason Test: Biotechnology & Its Applications - Question 7

- Correct Answer: A: Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).
- Explanation:
- Genetically modified crops are engineered to withstand abiotic stresses like cold and drought.
- GMOs have their genetic makeup altered through manipulation, which confers traits for stress tolerance.
- Therefore, genetic modification enables crops to exhibit enhanced resilience to adverse environmental conditions by introducing specific genes for stress tolerance. 

Assertion & Reason Test: Biotechnology & Its Applications - Question 8

Directions : In the following questions a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as :

Assertion (A) : The inactive form of toxic proteins are advantageous to the bacteria producing it.

Reason( R) : Low concentration of a bacteria or virus, even at a time when the symptoms of the disease are not visible, can be detected.

Detailed Solution for Assertion & Reason Test: Biotechnology & Its Applications - Question 8
Many proteins including certain toxins are secreted in their inactive form. They get activated, only when exposed to a specific trigger (pH, temperature, etc.). It is advantageous to the bacteria producing it because the bacterium does not get killed due to the action of protein.

Low concentration of a bacteria or virus, even at a time when the symptoms of the disease are not visible, can be detected by amplification of their nucleic acid by PCR methods.

Assertion & Reason Test: Biotechnology & Its Applications - Question 9

Directions : In the following questions a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as :

Assertion (A) : GEAC will decide the safety of introducing GM organisms for public use.

Reason (R) : Genetic modifications of organisms may have opposite results when introduced into the ecosystem.

Detailed Solution for Assertion & Reason Test: Biotechnology & Its Applications - Question 9
Genetic modification of organisms can have unpredictable results when such organisms are introduced into the ecosystem. Therefore, the Indian Government has set up organisations such as GEAC (Genetic Engineering Approval Committee), Which will make decisions regarding the validity of GM research and safety of introducing GM-organisms for public services.
Assertion & Reason Test: Biotechnology & Its Applications - Question 10

Directions : In the following questions a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as :

Assertion (A) : Rosie was the first transgenic cow.

Reason (R) : It contained human alpha lactalbumin.

Detailed Solution for Assertion & Reason Test: Biotechnology & Its Applications - Question 10
Transgenic animals are animals whose genes are altered by manipulation (recombinant DNA technology). Rosie was the first transgenic cow. The milk produced by it was protein rich. It contained human alpha lactalbumin. This milk was nutritionally richer and balanced as compared to that of a normal cow.
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