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In ____ the leaf base expands into a sheath covering the stem partially or wholly.

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Important Questions on Morphology and Modifications

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Biology>Structural Organisation in Plants and Animals>Morphology and Modifications>Leaf
Assertion (A): In Nepenthes leaves are modified to trap insects
Reason (R): Insectivorous plants trap insects for their nitrogen requirement
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Biology>Structural Organisation in Plants and Animals>Morphology and Modifications>Leaf
Which of the following is not a stem modification?
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Biology>Structural Organisation in Plants and Animals>Morphology and Modifications>Leaf
Leaves become modified into spines in:
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Biology>Structural Organisation in Plants and Animals>Morphology and Modifications>Leaf

Consider the following morphological biochemical or physiological characteristics of plants.

i. Presence of hairy leaves ii. Production of more nectar is flower
iii.. High sugar content in plant parts iv. Presence of higher aspartic acid concentration.

Choose the correct combination of statements which give natural resistance to plants against insect pests:

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Biology>Structural Organisation in Plants and Animals>Morphology and Modifications>Leaf
Phyllode is present in
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Biology>Structural Organisation in Plants and Animals>Morphology and Modifications>Leaf
Phyllode is found in
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Biology>Structural Organisation in Plants and Animals>Morphology and Modifications>Leaf
An insectivorous plant having glandular structures on its leaf secreting sticky fluid is
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Biology>Structural Organisation in Plants and Animals>Morphology and Modifications>Leaf

Pinnately compound leaf is found in

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Biology>Structural Organisation in Plants and Animals>Morphology and Modifications>Leaf
When the ovules are borne on central axis and septa are absent, as in Dianthus and Primrose the placentation is called _____.
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Biology>Structural Organisation in Plants and Animals>Morphology and Modifications>Leaf
Which of the following is the main adaptation for a plant to survive in xerophytic condition?
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Biology>Structural Organisation in Plants and Animals>Morphology and Modifications>Leaf
Adnate stipules occur in
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Biology>Structural Organisation in Plants and Animals>Morphology and Modifications>Leaf
An example for opposite phyllotaxy is
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Biology>Structural Organisation in Plants and Animals>Morphology and Modifications>Leaf
Free lateral stipules occur in
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Biology>Structural Organisation in Plants and Animals>Morphology and Modifications>Leaf
Parallel venation occurs in
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Biology>Structural Organisation in Plants and Animals>Morphology and Modifications>Leaf
Two chief functions of leaves are:
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Biology>Structural Organisation in Plants and Animals>Morphology and Modifications>Leaf
Eye of potato is
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Biology>Structural Organisation in Plants and Animals>Morphology and Modifications>Leaf
Match column I with column II and select the correct answer.
Column I Column II
A. Acacia 1. Phylloclade
B. Opuntia 2. Offset
C. Pineapple 3. Phyllode
D. Pistia 4. Sucker
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Biology>Structural Organisation in Plants and Animals>Morphology and Modifications>Leaf
Main function of leaf is to
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Biology>Structural Organisation in Plants and Animals>Morphology and Modifications>Leaf
Whorled, simple leaves with reticulate venation are present in
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Biology>Structural Organisation in Plants and Animals>Morphology and Modifications>Leaf
Leaf tendril is not seen in