Practice 1

Multiple-Choice Questions (MCQ)

1. Which of the following is NOT a type of tissue system based on structure and location?

A. Epidermal Tissue System

B. Ground Tissue System

C. Vascular Tissue System

D. Meristematic Tissue System

Answer: D

2. The epidermis of the root is often referred to as:

A. Pericycle

B. Cortex

C. Endodermis

D. Epiblema

Answer: D

3. In dicot stems, the vascular bundles are arranged in a:

A. Scattered pattern

B. Radial arrangement

C. Ring

D. Concentric circles

Answer: C

4. The vascular bundles in a monocot stem are described as:

A. Open and conjoint

B. Closed and conjoint

C. Open and radial

D. Closed and radial

Answer: B

5. The main function of the cuticle is to:

A. Facilitate gaseous exchange

B. Prevent water loss

C. Store food

D. Provide mechanical support

Answer: B

6. The mesophyll in a dorsiventral (dicot) leaf is differentiated into:

A. Palisade and sclerenchyma

B. Spongy and collenchyma

C. Palisade and spongy parenchyma

D. Endodermis and pericycle

Answer: C

7. A prominent and well-developed pith is a characteristic feature of:

A. Monocot root

B. Dicot root

C. Monocot stem

D. Dicot stem

Answer: A

8. Which of the following structures is responsible for the formation of lateral roots?

A. Endodermis

B. Pericycle

C. Cortex

D. Pith

Answer: B

9. In a dicot stem, the protoxylem is located towards the pith. This arrangement is called:

A. Exarch

B. Endarch

C. Polyarch

D. Radial

Answer: B

10. Bulliform cells are a characteristic feature of the epidermis in:

A. Dicot stem

B. Monocot root

C. Dicot leaf

D. Monocot leaf

Answer: D


Short Questions

1. What are the three types of tissue systems found in plants?

Answer: The three tissue systems are the epidermal tissue system, the ground or fundamental tissue system, and the vascular or conducting tissue system.

2. Where is the cuticle absent, and why?

Answer: The cuticle is absent in the roots (epiblema) to allow for the absorption of water and minerals from the soil.

3. What is the difference between an open and a closed vascular bundle?

Answer: An open vascular bundle contains cambium between the xylem and phloem, allowing for secondary growth. A closed vascular bundle lacks cambium and therefore does not undergo secondary growth.

4. Describe the primary function of the mesophyll in a leaf.

Answer: The mesophyll is the primary site of photosynthesis and gas exchange within the leaf.

5. What is the main difference in the arrangement of vascular bundles between a monocot stem and a dicot stem?

Answer: In a monocot stem, vascular bundles are scattered throughout the ground tissue, while in a dicot stem, they are arranged in a distinct ring.

6. What is the term for the arrangement of xylem and phloem when they are located on different radii within a vascular bundle, as seen in roots?

Answer: This arrangement is called a radial vascular bundle.

7. What is the function of the sclerenchymatous bundle sheath cells that often surround the vascular bundles in a monocot stem?

Answer: The sclerenchymatous bundle sheath provides mechanical support to the vascular bundles and the stem.

8. What is the role of bulliform cells in a monocot leaf?

Answer: Bulliform cells are large, colorless cells that help in the rolling and unrolling of the leaf, which is a mechanism to conserve water.

Location: India

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