PrepBharat

1.Which of the following is incorrect about leaf?
a) It is arranged in acropetal order
b) It develops from node
c) It is generally flattened in shape
d) It is arranged in basipetal order

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2. Typical leaf consist of
a) Petiole
b) Leaf base
c) Lamina
d) All of these

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3. The leaf is attached to the stem by the leaf base and may bear two lateral small leaf like structure called
a) Leaflet
b) Lamina
c) Stipule
d) Leaf blade

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4. Select the correct statement from the following:
A. In monocot leaf, the base expands into a sheath covering the stem partially or wholly.
B. In all leguminous plants, the leaf base may become swollen, which is called the pulvinus.
C. The lamina or leaf blade is the green expanded part of the leaf with veins and veinlets.
D. Veins provide rigidity to leaf blade.
a) A and B only
b) C and D only
c) All except B
d) All except D

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5. Leaf can be differentiated by
a) Shape
b) Margin and apex
c) Surface
d) All of these

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6. Long thin _________ petiole allows the leaf blade to flutter in wind, thereby cooling of the leaf and bringing _________ air to leaf surfaces.
a) Hard, fresh
b) Flexible, fresh
c) Hard, fresh
d) Rigid, fresh

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7.The arrangement of arteries and arterioles in the lamina of leaf is termed as
a) Venation
b) Phyllotaxy
c) Inflorescence
d) none of these

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8. Which of the following is correct about venation?
A. Parallel venation is generally found in monocot.
B. Parallel venation is generally found in dicot.
C. Reticulate venation is generally found in monocot.
D. Reticulate venation is generally found in dicot.
a) A and D only
b) B and C only
c) B and D only
d) A and C only

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9. Bud is present in axil
a) Simple leaf
b) Compound leaf
c) Leaflet
d) Both (a) and (b)

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10. Pinnately compound leaf found in
a) Lemon
b) Bombax
c) Desmodium
d) Neem

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