Plant Growth and Development
Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.
Growth regulators (Auxin, Gibberellin, Cytokinin, Ethylene, ABA)
SubtopicGrowth regulators (Auxin, Gibberellin, Cytokinin, Ethylene, ABA) under Plant Growth and Development for Grade 11 CBSE.
Preview questions (no answers)
- 1.
The phenomenon where ethylene breaks seed and bud dormancy is commonly seen in:
A.Cereal grains
B.Peanut seeds
C.Conifers
D.Tomato seeds
- 2.
Which PGR is known for increasing the shelf life of vegetables by delaying senescence?
A.Auxin
B.Gibberellin
C.Cytokinin
D.Ethylene
- 3.
Auxins are primarily produced in which part of the plant?
A.Roots and mature leaves
B.Growing apices of stems and roots
C.Flowers and seeds
D.Xylem and Phloem
Download the worksheet for Plant Growth and Development - Growth regulators (Auxin, Gibberellin, Cytokinin, Ethylene, ABA) to practice offline. It includes additional chapter-level practice questions.
Seed germination
SubtopicSeed germination under Plant Growth and Development for Grade 11 CBSE.
Preview questions (no answers)
- 1.
The primary objective of seed dormancy is to:
A.Prevent the plant from growing ever
B.Ensure germination occurs only under favorable environmental conditions
C.Reduce the nutritional value of the seed
D.Make the seed heavier
- 2.
Which part of the seed acts as a conduit for water entry during the initial stages of germination?
A.Hilum
B.Micropyle
C.Chalaza
D.Raphe
- 3.
What does a 'viable' seed mean?
A.A seed that is dead
B.A seed capable of germinating under suitable conditions
C.A seed without an embryo
D.A seed that has already germinated
Download the worksheet for Plant Growth and Development - Seed germination to practice offline. It includes additional chapter-level practice questions.
Photoperiodism
SubtopicPhotoperiodism under Plant Growth and Development for Grade 11 CBSE.
Preview questions (no answers)
- 1.
In the context of photoperiodism, what does the term 'LDP' stand for?
A.Low Density Plant
B.Long Duration Plant
C.Long-Day Plant
D.Leaf Development Process
- 2.
Which of the following is NOT required for a Day-Neutral Plant to flower?
A.Nutrients
B.Water
C.A specific duration of light
D.Optimal temperature
- 3.
What is the primary site that perceives the stimulus of light duration?
A.Shoot apex
B.Roots
C.Mature leaves
D.Flower primordia
Download the worksheet for Plant Growth and Development - Photoperiodism to practice offline. It includes additional chapter-level practice questions.
Vernalisation
SubtopicVernalisation under Plant Growth and Development for Grade 11 CBSE.
Preview questions (no answers)
- 1.
Vernalisation is a mechanism that allows plants to time their ________ to the appropriate season.
A.Germination
B.Leaf fall
C.Flowering
D.Root branching
- 2.
If we provide a cold treatment to a dry, dormant seed, will vernalisation occur?
A.Yes, always
B.No, seeds must be hydrated
C.Yes, but only in darkness
D.Yes, if the seed coat is thick
- 3.
Which of these crops has both spring and winter varieties?
A.Barley
B.Apple
C.Papaya
D.Sugarcane
Download the worksheet for Plant Growth and Development - Vernalisation to practice offline. It includes additional chapter-level practice questions.