HARD
11th CBSE
IMPORTANT
Earn 100

Gibberellins promote the formation of _____ flowers on genetically _____ plants in Cannabis, whereas ethylene promotes the formation of _____ flowers on genetically _____ plants.

Important Questions on Plant Growth and Development

HARD
11th CBSE
IMPORTANT
NCERT Exemplar Biology - Class 11>Chapter 15 - Plant Growth and Development>VERY SHORT ANSWER TYPE QUESTIONS>Q 8
Where are IAA hormones synthesized in plants?
MEDIUM
11th CBSE
IMPORTANT
NCERT Exemplar Biology - Class 11>Chapter 15 - Plant Growth and Development>VERY SHORT ANSWER TYPE QUESTIONS>Q 8
Where is Gibberellins synthesized in plants?
MEDIUM
11th CBSE
IMPORTANT
NCERT Exemplar Biology - Class 11>Chapter 15 - Plant Growth and Development>VERY SHORT ANSWER TYPE QUESTIONS>Q 8
Where are cytokinins synthesized in plants?
HARD
11th CBSE
IMPORTANT
NCERT Exemplar Biology - Class 11>Chapter 15 - Plant Growth and Development>VERY SHORT ANSWER TYPE QUESTIONS>Q 9
In botanical gardens and tea gardens, gardeners trim the plants regularly so that they remain bushy. Does this practice have any scientific explanation?
MEDIUM
11th CBSE
IMPORTANT
NCERT Exemplar Biology - Class 11>Chapter 15 - Plant Growth and Development>VERY SHORT ANSWER TYPE QUESTIONS>Q 10
Light plays an important role in the life of all organisms. Name any three physiological processes in plants which are affected by light.
MEDIUM
11th CBSE
IMPORTANT
NCERT Exemplar Biology - Class 11>Chapter 15 - Plant Growth and Development>VERY SHORT ANSWER TYPE QUESTIONS>Q 11

In the figure of the Sigmoid growth curve given below, label segments 1, 2, and 3.
Question Image

EASY
11th CBSE
IMPORTANT
NCERT Exemplar Biology - Class 11>Chapter 15 - Plant Growth and Development>VERY SHORT ANSWER TYPE QUESTIONS>Q 12
Growth is one of the characteristics of all living organisms. Do unicellular organisms also grow? If so, what are the parameters?
EASY
11th CBSE
IMPORTANT
NCERT Exemplar Biology - Class 11>Chapter 15 - Plant Growth and Development>SHORT ANSWER TYPE QUESTIONS>Q 1

Nicotiana tabacum, a Short-Day Plant, when exposed to more than a critical period of light fails to flower. Explain.