Tag: plant tissues

Questions Related to plant tissues

In a woody dicotyledonous tree, which of the following parts will mainly consist of primary tissues -

botany plant tissues introduction to tissue tissues - "the teams of workers" introduction to tissues

  1. Stem and root

  2. All parts

  3. Shoot tips and root tips

  4. Flowers, fruit and leaves

Show answer
Correct Option: C
Explanation:
In a woody dicotyledonous tree, the meristems which occur at tips of roots and shoots produce primary tissues and are called apical meristems.
So, the correct answer is 'Shoot tips and Root tips'.

State whether the following statements are true or false.
An extracellular matrix helps some cells to adhere to neighbouring cells.

botany plant tissues introduction to tissue tissues - "the teams of workers" introduction to tissues

  1. True

  2. False

Show answer
Correct Option: A
Explanation:

Extracellular matrix is the network of macromolecules like collagen, enzymes etc, which provide structural support to the cells. They help in the formation of tissues and organs. Extracellular matrix functions as cell adhesive as they are helpful in the interaction between cells and matrix.

So, the correct statement is 'True'.

The systems in an organism work independently.

botany plant tissues introduction to tissue tissues - "the teams of workers" introduction to tissues

  1. True

  2. False

Show answer
Correct Option: B
Explanation:
Systems present in your body are the circulatory, respiratory, muscular, digestive, integumentary, endocrine, reproductive, and nervous systems. All of these systems have specific functions but they cannot function independently, meaning that they rely on all the other systems in order to work properly.

So, the correct answer is 'False'.

We do not sense any pain when we clip our nails or cut our hair. Why?

botany plant tissues introduction to tissue tissues - "the teams of workers" introduction to tissues

  1. They are made up of dead cells.

  2. These parts are senseless.

  3. They are very strong to tolerate pain.

  4. None of these.

Show answer
Correct Option: A
Explanation:
  • Hairs and nails are made of dead tissues. Only the base of the hair and the base of the nail are living. 
  • The dead tissues are devoid of the nerve supply which acts as messengers to convey the sensation of pain and in their absence, it cannot be perceived by our brain. 

  • Thus, the correct answer is option A.

How many tissues are present within dicot root having cortex, endodermis, pericycle, pith, xylem and phloem?

botany plant tissues defense mechanism in plants epidermal tissue system permanent tissues and their types

  1. $5$

  2. $6$

  3. $3$

  4. $12$

Show answer
Correct Option: A
Explanation:

Dicot roots have xylem in the center of the root and phloem outside the xylem. Phloem is surrounded by the pericycle followed by endodermis. Pericycle is made up parenchyma cells and sclerenchyma cells.
The cortex is the outer most layer of the dicot root. Cortex is made up of epithelium cells. Pith is absent in it. Hence, total 5 types of tissues are present within dicot root.

Thus, the correct answer is '5.'

Which of the following are simple tissues?

botany plant tissues defense mechanism in plants epidermal tissue system permanent tissues and their types

  1. Parenchyma, xylem and phloem

  2. Parenchyma, collenchyma and sclerenchyma

  3. Parenchyma, xylem and sclerenchyma

  4. Parenchyma, phloem and sclerenchyma

Show answer
Correct Option: B
Explanation:

Parenchyma, collenchyma, and sclerenchyma are called simple tissues. And they are made up of similar kinds of cells. Vascular tissues are complex tissue as it is heterogeneous in nature with different types of cells. The main elements are the xylem, phloem and pericyclic.

Thus, the correct option is B.

In beet _____ tissue stores food. 

botany plant tissues defense mechanism in plants epidermal tissue system permanent tissues and their types

  1. Phloem

  2. Xylem.

  3. Parenchyma

  4. Aerenchyma

Show answer
Correct Option: C
Explanation:

Parenchyma form basic packing tissue but unspecialized function so many times in some plant it stores food.  

Which one of the following can be considered to be a dead mechanical tissue?

botany plant tissues defense mechanism in plants epidermal tissue system permanent tissues and their types

  1. Aerenchyma

  2. Collenchyma

  3. Parenchyma

  4. Sclerenchyma

Show answer
Correct Option: A

Match the following and choose the correct option from below.

A. Cuticle (i) Guard cells
B. Bulliform cells (ii) Single layer
C. Stomata (iii) Waxy layer
D. Epidermis (iv) Empty colourless cell
botany plant tissues defense mechanism in plants epidermal tissue system permanent tissues and their types

  1. A-(iii), B-(iv), C-(i), D-(ii)

  2. A-(i), B-(ii), C-(iii), D-(iv)

  3. A-(iii), B-(ii), C-(iv), D-(i)

  4. A-(iii), B-(ii), C-(i), D-(iv)

Show answer
Correct Option: A
Explanation:

A. Cuticle: It is a fatty substance( cutin) deposited over the surface of epidermal cells in the form of a separate layer. Usually, the cuticle is covered with wax which may be deposited in the form of granules, rods, crusts or viscous semi-liquid masses.

B. Bulliform cells: They are thin-walled and contain big vacuoles filled with water. They play an important role in folding and unfolding of leaves.
C. Stomata: A typical stoma is microscopic and usually consists of two kidney-shaped guard cells surrounding a pore.
D. Epidermis: The epidermis of most of the plant is single-layered (uniseriate) but in some cases, it may be more than one layer thick (multiseriate).
So, the correct answer is 'A-(iii), B- (iv), C-(i), D-(ii)'.

The living mechanical tissue

biology plant tissues defense mechanism in plants epidermal tissue system permanent tissues and their types

  1. Parenchyma

  2. Xylem

  3. Collenchyma

  4. Sclerenchyma

Show answer
Correct Option: C
Explanation:
The living mechanical tissue in plants is collenchyma. It is found in young parts of the plant body. It provides mechanical strength to the young plant parts. It is not found in underground parts and monocots.
So, the correct option is 'Collenchyma'