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Some plants show slender lateral branches which arise from the base of main axis and arch downwards after its initial aerial growth to touch the ground. Examples of such plants include:

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Important Questions on Morphology and Modifications

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Biology>Structural Organisation in Plants and Animals>Morphology and Modifications>Stem
Tendrils are modifications of
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Biology>Structural Organisation in Plants and Animals>Morphology and Modifications>Stem
Stems modified into flat green organs performing the functions of leaves are known as:
MEDIUM
Biology>Structural Organisation in Plants and Animals>Morphology and Modifications>Stem
Which one of the following statements is not correct?
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Biology>Structural Organisation in Plants and Animals>Morphology and Modifications>Stem
In Bougainvillea, thorns are the modifications of:
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Biology>Structural Organisation in Plants and Animals>Morphology and Modifications>Stem

Identify the vegetative propagule 'M' in the following diagram:

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HARD
Biology>Structural Organisation in Plants and Animals>Morphology and Modifications>Stem
Choose correct statements
I) Trap leaves supply nitrogen to Nepenthes plant
II) Grape vines differ from watermelon by having tendrils developed from axillary bud
III) Balancing roots of Eichornia arise from horizontally growing lateral branches
IV) Gall flowers of Ficus store eggs of Blastophaga
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Biology>Structural Organisation in Plants and Animals>Morphology and Modifications>Stem
Which of the following statements are correct about all the four types of modifications: potato, ginger, carrot and sweet potato?
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Biology>Structural Organisation in Plants and Animals>Morphology and Modifications>Stem
In watermelon the spirally coiled stem modifications which help in climbing are developed from
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Biology>Structural Organisation in Plants and Animals>Morphology and Modifications>Stem
An example of edible underground stem is:
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Biology>Structural Organisation in Plants and Animals>Morphology and Modifications>Stem
Which of the following is not a stem modification?
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Biology>Structural Organisation in Plants and Animals>Morphology and Modifications>Stem

Thorns in Citrus and Bougainvillea are

MEDIUM
Biology>Structural Organisation in Plants and Animals>Morphology and Modifications>Stem
Find the correct match.
 
   Column-I    Column-II
 a. Stem tendrils (i) Agave
 b. Stem thorns (ii) Water hyacinth
 c. Offset (iii) Bougainvillea
 d. Bulbil (iv) Watermelon
MEDIUM
Biology>Structural Organisation in Plants and Animals>Morphology and Modifications>Stem
Match the column-I with column-II
 
  Column-I   Column-II
a Stem tendrils i Bougainvillea
b Stem thorns ii Calotropis
c Opposite phyllotaxy iii China rose
d Alternate phyllotaxy iv Grapevines
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Biology>Structural Organisation in Plants and Animals>Morphology and Modifications>Stem
New banana plants develop from
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Biology>Structural Organisation in Plants and Animals>Morphology and Modifications>Stem
A slender, prostrate subaerial branch of the stem which creeps along the ground helping in vegetative reproduction is
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Biology>Structural Organisation in Plants and Animals>Morphology and Modifications>Stem
Potatoes are borne on
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Biology>Structural Organisation in Plants and Animals>Morphology and Modifications>Stem
Which of the following is not correctly matched?
MEDIUM
Biology>Structural Organisation in Plants and Animals>Morphology and Modifications>Stem
A horizontal underground stem is present in
MEDIUM
Biology>Structural Organisation in Plants and Animals>Morphology and Modifications>Stem
The aerial stem in banana is
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Biology>Structural Organisation in Plants and Animals>Morphology and Modifications>Stem
Bamboo is