Chapter Exam

Chapter 9: Tissue and Tissue System — Online MCQ Test

Q: Which meristem is responsible for the increase in the girth of the plant stem?

Answer: C. Lateral meristem — Lateral meristems, such as vascular cambium and cork cambium, are responsible for secondary growth which increases the diameter or girth of the plant.

Q: The tissue that provides mechanical support to the young stem and petiole is:

Answer: B. Collenchyma — Collenchyma is a living mechanical tissue that provides tensile strength and support to growing organs like young stems.

Q: If you observe a leaf section with stomata only on the lower epidermis, the leaf is most likely:

Answer: A. Dorsiventral (Dicot) — Dorsiventral leaves (typical of dicots) are hypostomatic, meaning stomata are primarily or exclusively on the lower epidermis.

Q: In a cross-section of a stem, if the phloem is found on both the outer and inner sides of the xylem, the vascular bundle is termed as:

Answer: B. Bicollateral — Bicollateral vascular bundles possess phloem patches located both on the outer and inner sides of the xylem, characteristic of families like Cucurbitaceae.

BOTANY · CLASS 11th · Tamil Nadu State Board

Practice Chapter 9: Tissue and Tissue System with a free chapter-wise online MCQ test for Tamil Nadu State Board CLASS 11th BOTANY. This chapter covers: This chapter details meristematic and permanent plant tissues alongside dermal ground and vascular tissue systems. Students analyze internal anatomy of dicot and monocot roots stem.... AI-generated questions from basic to board-exam level, with instant results and explanations.

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Chapter 9: Tissue and Tissue System — Important Questions & Answers (FAQ)

Frequently asked questions from Tamil Nadu State Board CLASS 11th BOTANY — Chapter 9: Tissue and Tissue System, with answers and explanations. These are sample questions; the exam has its own separate question set.

Which meristem is responsible for the increase in the girth of the plant stem?

A. Apical meristem
B. Intercalary meristem
C. Lateral meristem ✓
D. Pro-meristem

Answer: C. Lateral meristem
Lateral meristems, such as vascular cambium and cork cambium, are responsible for secondary growth which increases the diameter or girth of the plant.

The tissue that provides mechanical support to the young stem and petiole is:

A. Parenchyma
B. Collenchyma ✓
C. Sclerenchyma
D. Chlorenchyma

Answer: B. Collenchyma
Collenchyma is a living mechanical tissue that provides tensile strength and support to growing organs like young stems.

Which of the following statements about Sclerenchyma is correct?

A. They are living at maturity
B. They have thin cellulosic walls
C. They provide structural rigidity due to thick lignified walls ✓
D. They possess intercellular spaces

Answer: C. They provide structural rigidity due to thick lignified walls
Sclerenchyma cells have thick, lignified secondary walls that provide mechanical support and structural rigidity to the plant body.

If you observe a leaf section with stomata only on the lower epidermis, the leaf is most likely:

A. Dorsiventral (Dicot) ✓
B. Isobilateral (Monocot)
C. Epistomatic
D. Amphistomatic

Answer: A. Dorsiventral (Dicot)
Dorsiventral leaves (typical of dicots) are hypostomatic, meaning stomata are primarily or exclusively on the lower epidermis.

In a cross-section of a stem, if the phloem is found on both the outer and inner sides of the xylem, the vascular bundle is termed as:

A. Collateral
B. Bicollateral ✓
C. Concentric
D. Radial

Answer: B. Bicollateral
Bicollateral vascular bundles possess phloem patches located both on the outer and inner sides of the xylem, characteristic of families like Cucurbitaceae.