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Q. No.Choose the option that correctly fills the blanks.
(a) ______ can help in shortening the period between germination and flowering.
(b) Most of the winter flowering plants are _____
(a)
(b)
1.
Photoperiodism
Short day plants
2.
Vernalisation
Long day plants
3.
Vernalisation
Short day plants
4.
Photoperiodism
Long day plants
Subtopic: Photoperiodism (OLD NCERT) | Vernalization (OLD NCERT) |
61%
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Which of the following phytohormones is responsible for ripening of fruits and increasing the number of female flowers in cucumbers?
1. Auxin
2. Ethylene
3. Gibberellin
4. Cytokinin
1. Auxin
2. Ethylene
3. Gibberellin
4. Cytokinin
Subtopic: Ethylene |
91%
From NCERT
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During vernalisation, the cold stimulus is perceived by
1. Young root apex
2. Mature stem apex
3. Young leaves
4. Mature buds Ver
1. Young root apex
2. Mature stem apex
3. Young leaves
4. Mature buds Ver
Subtopic: Vernalization (OLD NCERT) |
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Which of the following structures show unlimited growth in plants?
1. Leaves
2. Flowers
3. Fruits
4. Roots
Subtopic: Growth |
76%
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Growth of an organ is defined as
1. Infinite increase in size2. Irreversible increase in size
3. Reversible increase in size
4. Infinite and reversible increase in size
Subtopic: Growth |
89%
From NCERT
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Which type of cells have the capacity of self-perpetuation?
1. Meristematic cells
2. Companion cells is
3. Sieve cells
4. Parenchyma cells
1. Meristematic cells
2. Companion cells is
3. Sieve cells
4. Parenchyma cells
Subtopic: Growth |
89%
From NCERT
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Subtopic: Growth |
89%
From NCERT
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Increase in the girth of plant is known as/done by
1. Primary growth
2. Apical meristem
3. intercalary meristem
4. Secondary growth
1. Primary growth
2. Apical meristem
3. intercalary meristem
4. Secondary growth
Subtopic: Growth |
75%
From NCERT
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Which parameter is used to measure the growth in flat organs like leaves?
1. Increase in dry weight
2. Increase in cell size
3. Increase in surface area
4. Increase in length
1. Increase in dry weight
2. Increase in cell size
3. Increase in surface area
4. Increase in length
Subtopic: Growth |
85%
From NCERT
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Which of the following is difficult to measure directly?
1. Increase in protoplasm content
2. Increase in surface area
3. Increase in dry weight
4. Increase in volume
1. Increase in protoplasm content
2. Increase in surface area
3. Increase in dry weight
4. Increase in volume
Subtopic: Growth |
90%
From NCERT
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