NEET Biology question

Arrange the following in the order of their location from periphery to centre in the entire dicotyledonous plant body. I. Fusiform cells, II. Trichoblasts, III. Collocytes, IV. Tyloses

(A)IV, I, II, III
(B)II, III, I, IVCorrect
(C)III, II, I, IV
(D)I, IV, III, II

Answer: (B)

Solution

Working from the periphery (epidermis) towards the centre (internal xylem): trichoblasts (root-hair-forming epidermal cells) occur in the outermost epidermal layer (epiblema); collocytes (the term applied to certain ray/companion-cell-associated cells) lie in the cortex-vascular region; fusiform cells

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Question ID VK-105350