Biotechnology and its Applications Practice Questions
Class 12 · Biology · 2958 free MCQs with instant results and detailed explanations.
2958
Total
858
Easy
1489
Medium
611
Hard
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Topics in Biotechnology and its Applications
Transgenic Animals
708
GM Organisms
766
Gene Therapy
761
Bioethics
723
Sample Questions from Biotechnology and its Applications
Here are 10 sample questions. Start a quiz to get randomized questions with scoring.
Q1
Easy
What does GM stand for in GM organisms?
A.
Genetically Modified
B.
Gene Manipulated
C.
Genetic Material
D.
Genetic Mutation
Show Answer & Explanation
Correct Answer: A
GM stands for Genetically Modified, indicating organisms whose genetic material has been altered using genetic engineering techniques.
Q2
Easy
Which technique is primarily used to create GM organisms?
A.
Hybridization
B.
Cloning
C.
CRISPR-Cas9
D.
Natural Selection
Show Answer & Explanation
Correct Answer: C
CRISPR-Cas9 is a revolutionary technique used for editing genes in organisms, making it a primary tool for creating GM organisms.
Q3
Easy
Which of the following is a common GM crop?
A.
Corn
B.
Rice
C.
Wheat
D.
All of the above
Show Answer & Explanation
Correct Answer: D
All the listed crops (Corn, Rice, and Wheat) have GM varieties developed to increase yield and resistance to pests.
Q4
Medium
What is a primary characteristic of genetically modified organisms (GMOs)?
A.
They can reproduce naturally without human intervention.
B.
They have been altered using genetic engineering techniques.
C.
They possess traits obtained solely through traditional breeding.
D.
They are never used in agriculture.
Show Answer & Explanation
Correct Answer: B
GMOs are specifically designed through genetic engineering to exhibit traits that are not naturally theirs.
Q5
Medium
Which of the following is a common application of GM organisms in agriculture?
A.
Increased susceptibility to pests.
B.
Enhanced nutritional content.
C.
Longer cultivation times.
D.
Reduced crop yield.
Show Answer & Explanation
Correct Answer: B
GM organisms can be engineered to enhance nutritional value, such as Golden Rice which is enriched with Vitamin A.
Q6
Medium
What is the purpose of Bt toxin in genetically modified crops?
A.
To enhance flavor.
B.
To confer resistance against specific pests.
C.
To increase the size of the crop.
D.
To promote faster growth.
Show Answer & Explanation
Correct Answer: B
Bt toxin is derived from the bacterium Bacillus thuringiensis and is used to create pest-resistant crops.
Q7
Medium
Which of the following GM crops has been developed to be resistant to herbicides?
A.
Golden Rice
B.
Roundup Ready Soybeans
C.
Bt Corn
D.
Salinity-resistant Wheat
Show Answer & Explanation
Correct Answer: B
Roundup Ready Soybeans are genetically modified to tolerate glyphosate, a common herbicide.
Q8
Hard
Which of the following is a characteristic of genetically modified organisms (GMOs)?
A.
Increased resistance to pests
B.
Reduced genetic diversity
C.
Higher water content
D.
Slower growth rates
Show Answer & Explanation
Correct Answer: A
GMOs are engineered to exhibit characteristics like increased pest resistance, which aids in higher crop yields.
Q9
Hard
Which of the following methods is commonly used to insert genes into plant cells?
A.
Electroporation
B.
Microinjection
C.
Agrobacterium-mediated transformation
D.
Chemical transformation
Show Answer & Explanation
Correct Answer: C
Agrobacterium-mediated transformation is a widely used method for genetically modifying plants by utilizing bacterial mechanisms.
Q10
Hard
What is the primary purpose of using the 'Bt' gene in crops?
A.
Enhancing nutritional value
B.
Increasing herbicide tolerance
C.
Providing resistance to specific insect pests
D.
Improving drought resistance
Show Answer & Explanation
Correct Answer: C
'Bt' (Bacillus thuringiensis) gene helps crops resist insect pests by producing a toxin that is harmful to certain insects.
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Biotechnology and its Applications — Class 12 Biology Practice Questions Online
This page contains 2958 practice MCQs for the chapter Biotechnology and its Applications in Class 12 Biology. The questions are organized by difficulty — 858 easy, 1489 medium, 611 hard — so you can choose the right level for your preparation.
Every question includes a detailed explanation to help you understand the concept, not just memorize answers. Take a timed quiz to simulate exam conditions, or practice at your own pace with no time limit. This chapter covers 4 topics, giving you comprehensive coverage of the entire chapter.