Question

Identify the simple tissue from the following.
(a) Parenchyma
(b) Xylem
(c) Epidermis
(d) Phloem

Answer 1

Hint: A tissue is said to be simple when it is made up of only one type of cell. The cell walls of this simple tissue are thin and are made up of cellulose. It performs numerous functions like photosynthesis, storage, and secretion.

Complete answer:
A simple tissue among the given options is parenchyma. Parenchyma is mainly made up of living things that are unspecialized in structure. It is one of the three main fundamental or ground tissues in plants. Other ground tissues are collenchyma and sclerenchyma.
A group of cells that have a common origin and usually perform a common function is called a ‘tissue’. A plant body is made up of several tissues. Based on the constituent cell’s ability of division, tissues are classified into two main types. These are meristematic and permanent tissues. ‘Meristematic tissue’ constitutes the regions within the plant body which exhibit active cell division. However, a group of cells that lose the ability to divide after a certain period form ‘permanent tissue.’
Permanent tissues made up of cells that have similar structure and function are known as ‘simple tissues’, while the permanent tissues with many different types of cells are known as ‘complex issues’.
Plants contain various simple tissues such as parenchyma, collenchyma, and sclerenchyma. In a plant, body parenchyma forms the major component within the organs.

Additional Information:
 -Thus, based on their structure and location, there are three types of tissue systems. They are epidermal tissue system, the ground or fundamental tissue system, and the vascular or conducting tissue system
- The epidermis is the outermost layer of the plant body.
So, the correct answer is ‘Parenchyma.’

Note:
 -Parenchymal cells are generally isodiametric. Their shape varies from spherical, oval, round polygonal or elongated.
 -Xylem and phloem are the complex tissues present in plants. ‘Xylem’ is made up of different kinds of elements namely vessels, tracheids, xylem fibre, and xylem parenchyma.
-In angiosperms ‘phloem’ is formed by companion cells, sieve tube elements, phloem parenchyma and phloem fibres.