Question:

Bulliform cells are present in

Updated On: Jul 28, 2022

bundle sheath
mesophyll
vascular bundles
epidermis.

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The Correct Option is D

Solution and Explanation

Bulliform cells are present in epidermis. These epidermal cells are found in the upper leaf epidermis of Poaceae and other monocotyledons. Turgor changes in bulliform cells are responsible for the inrolling and unrolling of leaves e.g. maiza, psamma grasses. Therefore they are also called motor cells. They are highly vacuolate and can store water.

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Concepts Used:

Anatomy of Dicotyledonous and Monocotyledonous Plants

Dicot Root:

Dicot plants have the taproot system.
The outermost layer is called the epidermis. The epidermal cells sometimes project out which appear as the root hairs.
The epidermis is followed by the multi-layered cortex, loosely made of the parenchyma cells with intercellular spaces.
The inner layer of the cortex is called endodermis, which is tightly packed by the barrel shaped-cells.
Endodermis is followed by pericycle, which are a few layers of thick-walled parenchyma cells.
In dicots, the central pith is not distinct.
There are two to four xylem and phloem.
The xylem and phloem are remarked by a layer of parenchymatous cells known as conjunctive tissue.

Monocot Root:

Monocot roots do not show much difference in the anatomy from that of the dicot roots.

Monocot plants possess an adventitious root system.
As in the dicots, the epidermis forms the outermost layer, followed by cortex, pericycle, endodermis, vascular bundles (xylem and phloem) and pith (random order).
Pith is conspicuous and large.
The number of xylem in a monocot is six or more.
Secondary growth is not seen in the monocot plants.