Chapter 6: Tissues Assertion-Reason Questions | science Class 9 CBSE

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Chapter 6: Tissues Assertion-Reason Questions | science Class 9 CBSE | ByteNotes.in

Assertion-Reason

Check the statement and reason

A-R

Question 1

Logic Check

Assertion (A): In multicellular organisms, tissues are formed for division of labour. Reason (R): Groups of cells carry out specific functions efficiently in an organized manner.

Reasoning Options

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Assertion-Reason

Check the statement and reason

A-R

Question 2

Logic Check

Assertion (A): Meristematic tissues help in the growth of plants. Reason (R): These tissues contain actively dividing cells found at specific regions like root and shoot tips.

Reasoning Options

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Assertion-Reason

Check the statement and reason

A-R

Question 3

Logic Check

Assertion (A): Apical meristem increases the length of plants. Reason (R): It is located at the tips of stems and roots where elongation occurs.

Reasoning Options

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Assertion-Reason

Check the statement and reason

A-R

Question 4

Logic Check

Assertion (A): Collenchyma tissue provides flexibility to plants. Reason (R): It has living cells with unevenly thickened cell walls that allow bending without breaking.

Reasoning Options

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Assertion-Reason

Check the statement and reason

A-R

Question 5

Logic Check

Assertion (A): Sclerenchyma cells are dead and provide strength to plants. Reason (R): These cells have thickened lignified cell walls and no internal space.

Reasoning Options

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Assertion-Reason

Check the statement and reason

A-R

Question 6

Logic Check

Assertion (A): Parenchyma is a simple permanent tissue. Reason (R): It is made up of living, unspecialised cells with thin walls and large intercellular spaces.

Reasoning Options

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Assertion-Reason

Check the statement and reason

A-R

Question 7

Logic Check

Assertion (A): Xylem conducts water and minerals in plants. Reason (R): Xylem consists of tracheids, vessels, xylem parenchyma, and xylem fibres that help in conduction and support.

Reasoning Options

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Assertion-Reason

Check the statement and reason

A-R

Question 8

Logic Check

Assertion (A): Phloem transports food from leaves to other parts of the plant. Reason (R): Phloem is made up of sieve tubes, companion cells, phloem parenchyma, and phloem fibres.

Reasoning Options

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Assertion-Reason

Check the statement and reason

A-R

Question 9

Logic Check

Assertion (A): Epidermis in plants protects against water loss. Reason (R): Epidermal cells secrete a waxy, water-resistant layer called cutin.

Reasoning Options

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Assertion-Reason

Check the statement and reason

A-R

Question 10

Logic Check

Assertion (A): Stomata are involved in exchange of gases and transpiration. Reason (R): Stomata are surrounded by guard cells that regulate their opening and closing.

Reasoning Options

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Chapter sections

Chapter 6: Tissues | Assertion-Reason

Assertion (A): In multicellular organisms, tissues are formed for division of labour. Reason (R): Groups of cells carry out specific functions efficiently in an organized manner.

Assertion (A): Meristematic tissues help in the growth of plants. Reason (R): These tissues contain actively dividing cells found at specific regions like root and shoot tips.

Assertion (A): Apical meristem increases the length of plants. Reason (R): It is located at the tips of stems and roots where elongation occurs.

Assertion (A): Collenchyma tissue provides flexibility to plants. Reason (R): It has living cells with unevenly thickened cell walls that allow bending without breaking.

Assertion (A): Sclerenchyma cells are dead and provide strength to plants. Reason (R): These cells have thickened lignified cell walls and no internal space.

Assertion (A): Parenchyma is a simple permanent tissue. Reason (R): It is made up of living, unspecialised cells with thin walls and large intercellular spaces.

Assertion (A): Xylem conducts water and minerals in plants. Reason (R): Xylem consists of tracheids, vessels, xylem parenchyma, and xylem fibres that help in conduction and support.

Assertion (A): Phloem transports food from leaves to other parts of the plant. Reason (R): Phloem is made up of sieve tubes, companion cells, phloem parenchyma, and phloem fibres.

Assertion (A): Epidermis in plants protects against water loss. Reason (R): Epidermal cells secrete a waxy, water-resistant layer called cutin.

Assertion (A): Stomata are involved in exchange of gases and transpiration. Reason (R): Stomata are surrounded by guard cells that regulate their opening and closing.

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