Stem thorns help in

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5.Morphology of Flowering Plants

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Stem thorns help in

Climbing

Protection from grazing animals

Reduction in rate of transpiration

All of these

Solution

(d) Thorns are defensive organs against herbivorous animals and also help in climbing and reducing the loss of water $(transpiration)$ from the exposed parts of the plants.

Standard 11

Biology

In sweet pea, the tendrils are modified

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The weak stemmed plants which can climb with the help of thorns, spines, prickles are

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In Opuntia the stem is modified into a flattened green structure to perform the function of leaves (i.e., photosynthesis). Cite some other examples of modifications of plant parts for the purpose of photosynthesis.

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Definitions / Explanation :

$(i)$ Leaf like stem Phylloclade

$(ii)$ Stolon

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Which one of the following pairs is wrongly matched while the remaining three are correct?

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(AIPMT-2011)

Stem thorns help in

Solution

Similar Questions

In sweet pea, the tendrils are modified

The weak stemmed plants which can climb with the help of thorns, spines, prickles are

In Opuntia the stem is modified into a flattened green structure to perform the function of leaves (i.e., photosynthesis). Cite some other examples of modifications of plant parts for the purpose of photosynthesis.

Definitions / Explanation : $(i)$ Leaf like stem Phylloclade $(ii)$ Stolon

Which one of the following pairs is wrongly matched while the remaining three are correct?

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Definitions / Explanation :

$(i)$ Leaf like stem Phylloclade

$(ii)$ Stolon