In Opuntia the spines are modification of [Pb. PMT 2004]
A) Leaf
B) Branch
C) Epidermis
D) Flower
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the correct one is A. i.e. leaf
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In 'Opuntia', the spines are modification of Leaf.
Option - A
Explanation:
- In plant morphologies, variety of modifications leaves is seen. These are thorns, spines, prickles.
- All these structures are keen, stiff and perform the same function that is defense.
- Due to the shortfall of water in the Sahara, in some plants leaves are modified to form spines.
- The spines act as defensive structures. Plants like cactus have a specific kind of spines which are “very small and deciduous” with many barbs through its length.
- This variety of spine is called as glochidium and is present in “aereoles of Optunia”.
- Spines can be also referred to as petiolar spines as in “Foquieria”, “leaflet spines as in Phoenix” and “stipular spines” as seen in Euphoria.
Learn more about the Opuntia:
Q: Why phylloclade of opuntia is thick and fleshy
Link: https://brainly.in/question/2799626
Q: State the function of the leaves spines in Opuntia
Link: https://brainly.in/question/4423136
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