Match the following stem modifications given in column I with their examples given in column II and select the correct combination from the options given below.

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A – I, B – II, C – III, D – V, E – IV

A – II, B – III, C – IV, D – V, E – I

A – III, B – IV, C – V, D – I, E – II

A – III, B – V, C – IV, D – II, E – I

answer is D.

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Detailed Solution

Underground stems of potato, ginger, turmeric, zaminkand, Colocasia are modified to store food in them. They also act as organs of perennation to tide over conditions for growth. Stem tendrils which develop from axillary buds, are slender and spirally coiled and help plants to climb such as in gourds (cucumber, pumpkins, watermelon) and grapevines. Axillary buds of stems may also get modified into woody, straight and pointed thorns. Thorns are found in many plants such as Citrus, Bougainvillea. They protect plants from browsing animals. Some plants of arid regions modify their stems into flattened (Opuntia), or fleshy cylindrical (Euphorbia) structures They contain chlorophyll and carry out photosynthesis.

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