Plus Two Botany Practical Viva Questions and Answers

Plus Two Botany Practical Viva Questions and Answers

Plus Two Botany Practical Viva Questions and Answers: In this article, we will provide some of the most asked practical viva questions and answers asked in the Plus Two Botany Practical exam each year. We have compiled this list from viva questions from analysis of previous practical exams and collected these Plus Two Botany Practical Viva Questions and Answers for students preparing for upcoming Botany practical exams.

Plus Two Botany Practical Viva Questions and Answers

Plus Two Botany Practical Viva Exam. A necessary evil. Most students break out in a cold sweat at the mere thought. How do I prepare? What are they going to ask me? What should I ask them? Those are just a few of the questions that run through the mind of the average student.

Board	SCERT, Kerala
Class	Plus Two
Subject	Botany
Exam	Practical
Study Materials	Viva Q&A
Provider	Hsslive.co.in
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Plus Two Botany Practical Viva Questions & Answers

We have listed below the list of most asked plus two Botany practical viva questions along with answers of each below:

1. Which of the following is a gaseous hormone?
a) Ethylene
b) ABA
c) GA
d) Auxin
Answer: a
Explanation: Ethylene is a volatile gaseous hormone. GA, ABA and Auxin are acidic in nature. GA and Auxin are growth promoters while ABA is a growth inhibitor.

2. ABA is a derivative of adenine purine.
a) True
b) False
Answer: b
Explanation: ABA is a growth inhibitor. It is a derivative of carotenoids. It is functional mainly during stressful conditions. Cytokinin is a growth promoter. It is an adenine derivative (N6-furfurylamino purine). It is responsible for plant growth along with auxin hormone.

3. The hormone responsible for femaleness in cucumbers is ________
a) IAA
b) ABA
c) GA
d) Ethylene
Answer: d
Explanation: Ethylene is the hormone responsible for femaleness in cucumbers. IAA and GA induce parthenocarpy in fruits. ABA is not related to ripening of fruits.

4. Richmond Lang effect is linked to ________
a) Cytokinins
b) ABA
c) GA
d) NAA
Answer: a
Explanation: Richmond Lang effect is related to delay in senescence of mature parts of plants. It is linked to cytokinin hormone. GA and NAA also help in attaining precocious maturity. ABA promotes senescence in stressful conditions.

5. The hormone antagonistic to ABA is_______
a) IAA
b) Ethylene
c) GA
d) Kinetin
Answer: c
Explanation: GA acts antagonistically to ABA. IAA is synthetic auxin. Kinetin delays senescence. Ethylene promotes abscission of older parts.

6. The source of hormone ethylene is________
a) oats
b) ethephon
c) coconut milk
d) urine
Answer: b
Explanation: The source of hormone ethylene is ethephon. Source of auxin is oats. Source of cytokinin is coconut kernel. Auxin was first isolated from human urine.

7. The role of PGRs is a kind of intrinsic control.
a) True
b) False
Answer: a
Explanation: Plant growth is controlled by factors categorized into intrinsic control, genomic control and extrinsic control. Plant growth regulators including both promoters and inhibitors are controlled by hormones and come under intrinsic control. All the environmental factors come under extrinsic control.

8. Which of the following hormone is a stress hormone?
a) Ethylene
b) ABA
c) Auxin
d) GA
Answer: b
Explanation: ABA is a hormone which works in stressful conditions. GA acts antagonistic to ABA. Auxin leads to apical dominance. Ethylene is related to early ripening of fruits.

9. Which of the following hormone is used to induce morphogenesis in plant tissue culture?
a) Cytokinins
b) Ethylene
c) Auxin
d) ABA
Answer: a
Explanation: Cytokinins is used to induce morphogenesis in plant tissue culture. Auxin and cytokinin together in varied amounts carry out root and shoot differentiation. Ethylene leads to early ripening. ABA acts as a stress hormone.

10. The hormone responsible for enhancement of the respiration rate of fruits thereby leading to its early ripening is ________
a) Auxin
b) GA₃
c) Ethylene
d) ABA
Answer: c
Explanation: Ethylene is the hormone responsible for enhancement of the respiration rate of fruits thereby leading to its early ripening. Auxin and GA₃ induces parthenocarpy of fruits. ABA acts as a stress hormone.

Plus Two All Subjects Practical Viva Questions & Answers

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Importance of Plus Two Botany Practical Viva Questions & Answers

All students should know the plus two Botany practical viva questions to enhance their preparation in the right direction for the examinations. It will help the students to get an answer and help them to manage their time during the exam effectively.

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