Tissues Test

Result

Tissues Test - 21

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following functions is primarily performed by the epidermis?

A
Transportation of water

B
Transportation of food

C
Photosynthesis

D
Protection

Solution

Epidermis is the outermost layer of cells that covers the entire surface of a plant. The epidermal cells often secrete a waxy water-resistant layer on the aerial plant parts to prevent water loss and mechanical injury.

Xylem tissues perform the function of transporting water. Phloem tissues perform the function of transporting food.Leaves primarily perform the function of photosynthesis.

The correct answer is D.
Question 2
1 / -0

Which type of simple permanent tissue has large air cavities?

A
Aerenchyma

B
Collenchyma

C
Sclerenchyma

D
Chlorenchyma

Solution

Aerenchyma is a type of parenchyma tissue that has air cavities between its constituent cells. It is found in aquatic plants. It provides buoyancy to these plants in order to help them float.

The correct answer is A.

Why alternative B is wrong:

Collenchyma provides flexibility to plants. It does not have large air cavities between its cells.

Why alternative C is wrong:

Sclerenchyma provides strength to plant parts. It is made of dead cells. It does not have large air cavities between its cells.

Why alternative D is wrong:

Chlorenchyma contains chlorophyll. Hence, it is able to perform photosynthesis. It does not have large air cavities between its cells.
Question 3
1 / -0

Which pair of tissues represents simple permanent tissues?

A
Collenchyma and chlorenchyma

B
Chlorenchyma and phloem

C
Collenchyma and xylem

D
Xylem and phloem

Solution

Collenchyma and chlorenchyma are simple permanent tissues, as both are made up of only one type of cell. Collenchyma provides flexibility to plants. Chlorenchyma contains chlorophyll so it is able to perform photosynthesis.
Xylem and phloem are complex permanent tissues as both are made up of more than one type of cell.

The correct answer is A.
Question 4
1 / -0

Which simple permanent tissue contains dead cells?

A
Chlorenchyma

B
Sclerenchyma

C
Collenchyma

D
Aerenchyma

Solution

Sclerenchyma is made of dead cells. These cells are long and narrow as their walls are thickened due to lignin decomposition on the cell wall. It provides strength to plant parts.

The correct answer is B.

Why alternative A is wrong:

Chlorenchyma cells are living cells that contain the pigment chlorophyll. Hence, these cells perform the function of photosynthesis.

Why alternative C is wrong:

Collenchyma cells are living cells. They are irregularly thickened at the corners.

Why alternative D is wrong:

Aerenchyma cells are living cells. They have large intercellular spaces between them.