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  4. Select the correct statement from the following: A. Fleshy cylindrical stem in Euphorbia carries out photosynthesis. B. Pistia and Eichhornia are examples of offset. C. Underground stem of grass and strawberry spread to new niche and when older part die new plants are formed. D. Thorns are woody, straight and pointed.

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Q. Select the correct statement from the following:
A. Fleshy cylindrical stem in Euphorbia carries out photosynthesis.
B. Pistia and Eichhornia are examples of offset.
C. Underground stem of grass and strawberry spread to new niche and when older part die new plants are formed.
D. Thorns are woody, straight and pointed.

NTA AbhyasNTA Abhyas 2020Morphology of Flowering Plants

Solution:

In Euphorbia, the stem becomes fleshy green and cylindrical and carries out photosynthesis. Such stem is called phylloclade. Pistia and Eichhornia are aquatic plants, in which stem is one and two-internode long and bears tuff of roots and bunches of leaves at nodes.