Freshersnow Schools

NCERT Class 11 Chapter 15 Biology Plant Growth and Development MCQ | Questions & Answers: Are you in a search of the right place to take up the NCERT Class 11 Chapter 15 Biology Plant Growth and Development MCQ Quiz? If you are yes for it, make use of this page and give it a try. All the best!

 0%

Page 1 of 3

1. Which one is a long day plant?

A. Spinach

B. Mirabilis jalapa

C. Tobacco

D. Glycine max

 Loading...

2. The hormone which controls cell division and cell differentiation is

A. cytokinin

B. auxin

C. ABA

D. gibberellin

 Loading...

3. Which one of the following is a long day plant?

A. Wheat

B. Soyabean

C. Bajra

D. Tobacco

 Loading...

4. A chemical believed to be involved in flowering is

A. florigen

B. gibberellin

C. kinetin

D. IBA

 Loading...

5. Differentiation of shoot is controlled by

A. high cytokinin : auxin ratio

B. high gibberellin : auxin ratio

C. high auxin : cytokinin ratio

D. None of these

 Loading...

6. Which one of the following generally acts as an antagonist to gibberellins?

A. ABA

B. Zeatin

C. Ethylene

D. IAA

 Loading...

7. To avoid excessive water loss during severe drought stress,the closure of stomata is signalled by the production of

A. ABA

B. IAA

C. NAA

D. IBA

 Loading...

8. In short day plants, flowering is induced by

A. photoperiod below a critical length and uninterrupted long night.

B. long night

C. short photoperiod and interrupted long night.

D. photoperiod less than 12 hours

 Loading...

9. Apical dominance in plants is caused by

A. high concentration of auxins in the terminal bud

B. high concentration of gibberellins in the apical bud

C. high concentration of auxins in the lateral bud

D. absence of auxins and gibberellins in apical bud

 Loading...

10. Primary precursor of IAA is

A. tryptophan

B. phenylalanine

C. tyrosine

D. leucine

 Loading...

Page 2 of 3

11. Parthenocarpic fruit can be produced by the application of which of the following auxin?

A. All of the above

B. 2, 4-D (2-4 dichloro phenoxy acetic acid)

C. IAA (Indole acetic acid)

D. IBA (Indole butyric acid)

 Loading...

12. The conditions necessary for vernalization are

A. water and carbon dioxide

B. oxygen and water.

C. low temperature and oxygen

D. high temperature and water

 Loading...

13. Which of the following hormones does not naturally occur in plants?

A. 2,4–D (2, 4–dichloro pheoxy acetic acid)

B. IAA

C. ABA

D. GA

 Loading...

14. Which of the following types of phytohormones resemble the nucleic acids in some structural aspects ?

A. Cytokinin

B. ABA

C. Auxin

D. Gibberellin

 Loading...

15. Which one of the following statements regarding auxin is/ are correct?

A. IAA and IBA are natural but NAA, 2, 4-D and 2, 4, 5-T are synthetic auxins

B. IAA and NAA are natural but IBA, 2, 4, 5-T and 2, 4-D are synthetic auxins

C. NAA and 2, 4, 5-T are natural but IAA, IBA and 2, 4-D are synthetic auxins

D. IAA, NAA, IBA, 2, 4-D and 2, 4, 5-T are synthetic auxins.

 Loading...

16. Which one among the following chemicals is used for causing defoliation of forest trees?

A. 2, 4-dichloro phenoxy acetic acid

B. Malic hydrazide

C. Phosphon-D

D. None of these

 Loading...

17. A plant completing its life cycle before the onset of dry condition is said to be

A. drought escaping

B. short day plant

C. long day plant

D. All of these

 Loading...

18. Phytohormones are

A. regulators synthesized by plants and influencing physiological processes.

B. hormones regulate growth from seed to adulthood.

C. chemicals regulating secondary growth.

D. chemicals regulating flowering.

 Loading...

19. Which one of the following is a natural growth inhibitor?

A. ABA

B. GA

C. NAA

D. IAA

 Loading...

20. In a plant growing under dark condition, the leaves turn light coloured, internodes become much elongated and it is termed as

A. etiolation

B. chlorosis

C. vernalization

D. phyllotaxy

 Loading...

Page 3 of 3

21. Leaf fall can be prevented with the help of

A. abscisic acid

B. auxins

C. florigen

D. cytokinins

 Loading...

22. Which of the following hormones can replace vernalization?

A. Auxin

B. Cytokinin

C. Gibberellins

D. Ethylene

 Loading...

23. Mowing grass lawn facilitates better maintenance because

A. wounding stimulates regeneration

B. removal of apical dominance and stimulation of intercalary meristem

C. removal of apical dominance

D. removal of apical dominance and promotion of lateral meristem

 Loading...

24. Highest auxin concentration occurs

A. in growing tips

B. in leaves

C. at base of plant organs

D. in xylem and phloem

 Loading...

25. Phytohormones are

A. chemicals regulating flowering

B. chemicals regulating secondary growth

C. hormones regulating growth from seed to adulthood

D. regulators synthesized by plants and influencing physiological processes

 Loading...

 Loading...

 

NCERT Class 11 Chapter 13 Biology Photosynthesis in Higher Plants MCQ | Questions & Answers: Those who wish to take an online MCQ Quiz for the NCERT Class 11 Chapter 13 Biology Photosynthesis in Higher Plants are in the right place. In the below section we have provided many questions that can enable you to test your knowledge about the Class 11 Chapter 13 Biology Photosynthesis in Higher Plants topic.

NCERT Class 11 Chapter 21 Biology Neural Control and Coordination Movement MCQ | Questions & Answers: Candidates who are interested to know new concepts about the Class 11 Chapter 21 Biology Neural Control and Coordination Movement can take a look at this article. Here we have provided the MCQ Online Quiz that can be very productive for you to learn about it.

NCERT Class 11 Chapter 5 Biology Morphology of Flowering Plants MCQ | Questions & Answers: Want to give your try for the NCERT Class 11 Chapter 5 Biology Morphology of Flowering Plants MCQ Quiz? If so, then here you go. Make sure that you submit your answers at the end to get instant results.

NCERT Class 11 Chapter 12 Biology Mineral Nutrition MCQ | Questions & Answers: This page will help you take up the NCERT Class 11 Chapter 12 Biology Mineral Nutrition MCQ Quiz. Submit the answers at the end and get the results instantly. All the best!!!

NCERT Class 11 Chapter 20 Biology Locomotion and Movement MCQ | Questions & Answers: Interested in enhancing your knowledge regarding Class 11 Chapter 20 Biology Locomotion and Movement topic? well here is an opportunity for you. Here in this article, we have accommodated a series of MCQs that will assist you in learning new concepts.

NCERT Class 11 Chapter 19 Biology Excretory Products and Their MCQ | Questions & Answers: Students of Class 11 can make use of the Multiple Choice Questions & Answers that we have provided here regarding NCERT Class 11 Chapter 19 Biology Excretory Products and Their Concept. Now, without any delay take up the quiz and know the marks you have scored.

NCERT Class 11 Chapter 19 Biology Digestion and Absorption MCQ | Questions & Answers: Give your try for the NCERT Class 11 Chapter 19 Biology Digestion and Absorption MCQ Quiz and at the end submit your answers to get the instant results. Good luck!!!

NCERT Class 11 Chapter 22 Biology Chemical Coordination and Integration MCQ | Questions & Answers: Hello aspirants! Looking for the right place to check your knowledge in NCERT Class 11 Chapter 22 Biology Chemical Coordination and Integration? If so, then here is an NCERT Class 11 Chapter 22 Biology Chemical Coordination and Integration MCQ Quiz. Take up this quiz and get to know where you needed improvements.

NCERT Class 11 Chapter 8 Biology Cell the Unit of Life MCQ | Questions & Answers: Candidates who are interested in the Class 11 Chapter 8 Biology Cell the Unit of Life concept here is an opportunity for you guys to attempt the NCERT Class 11 Chapter 8 Biology Cell the Unit of Life MCQ Quiz. So, without any delay take up the quiz and know your final grade.

NCERT Class 11 Chapter 10 Biology Cell Cycle and Cell Division MCQ | Questions & Answers: Do you guys wish to take an online quiz with regards to the NCERT Class 11 Chapter 10 Biology Cell Cycle and Cell Division Concept? then here is an article that can help you. Take up the quiz and know how well aware you are about the Cell Cycle and Cell Division concept.

NCERT Class 11 Chapter 17 Biology Breathing and Exchange of Gases MCQ | Questions & Answers: Greetings to you! Here we have come up with another NCERT Class 11 Chapter 17 Biology Breathing and Exchange of Gases MCQ Quiz. Give your best for it and get the instant results on submission of the answers at the end. Good luck!!!

NCERT Class 11 Chapter 18 Biology Body Fluids and Circulation MCQ | Questions & Answers: With the help of this article, you can take part in the NCERT Class 11 Chapter 18 Biology Body Fluids and Circulation MCQ Quiz. As a result, you can know how much expertise you have in the particular field.

NCERT Class 11 Chapter 9 Biology Biomolecules MCQ | Questions & Answers: Now is the perfect time for you guys to take up the NCERT Class 11 Chapter 9 Biology Biomolecules Quiz. From the below section you guys can find a lot of Multiple Choice Questions which will help you guys know new concepts about the Class 11 Chapter 9 Biology Biomolecules topic.

NCERT Class 11 Chapter 2 Biology Biological Classification MCQ | Questions & Answers: Aspirants should check out this article to attempt the NCERT Class 11 Chapter 2 Biology Biological Classification MCQ Quiz. After attempting the Multiple Choice Questions kindly know your final grade and marks & ultimately know where you can improve.