Question Bank — Tissues in Action

Section A — MCQs (10 questions, 1 mark each)

1. Which meristematic tissue is responsible for increase in girth of dicot stems?
   (a) Apical meristem
   (b) Lateral meristem
   (c) Intercalary meristem
   (d) Epidermis

2. Parenchyma tissue in aquatic plants helps in floating due to the presence of:
   (a) Thick lignified walls
   (b) Air spaces
   (c) Cuticle
   (d) Sieve tubes

3. The tissue that transports food from leaves to other parts of the plant is:
   (a) Xylem
   (b) Phloem
   (c) Epidermis
   (d) Sclerenchyma

4. Which type of epithelial tissue lines the blood vessels and lungs for rapid diffusion?
   (a) Stratified squamous
   (b) Simple squamous
   (c) Columnar
   (d) Cuboidal

5. Cardiac muscles are found only in the:
   (a) Stomach
   (b) Heart
   (c) Intestine
   (d) Skeletal system

6. Ligaments connect:
   (a) Muscle to bone
   (b) Bone to bone
   (c) Muscle to muscle
   (d) Bone to cartilage

7. The waxy layer on epidermis that reduces water loss is called:
   (a) Stomata
   (b) Cuticle
   (c) Root hair
   (d) Lignin

8. Neurons consist of cell body, dendrites and:
   (a) Axon
   (b) Matrix
   (c) Striations
   (d) Vacuoles

Assertion-Reason Questions

9. Assertion (A): Meristematic cells lack vacuoles.
   Reason (R): Absence of vacuoles allows continuous and rapid cell division.
   (a) Both A and R are true and R is the correct explanation of A.
   (b) Both A and R are true but R is not the correct explanation of A.
   (c) A is true but R is false.
   (d) A is false but R is true.

10. Assertion (A): Sclerenchyma provides mechanical strength to plant parts.
    Reason (R): Its cells have thick walls due to lignin deposition and are mostly dead.
    (a) Both A and R are true and R is the correct explanation of A.
    (b) Both A and R are true but R is not the correct explanation of A.
    (c) A is true but R is false.
    (d) A is false but R is true.

Section B — Very Short Answer (6 questions, 2 marks each)

1. Define tissue. Give one example each from plants and animals.
2. Differentiate between apical and intercalary meristem (one point each).
3. What is the function of stomata? Name the tissue in which they are present.
4. State two structural features of collenchyma that help in providing flexibility.
5. Name the four types of animal tissues and state one function of connective tissue.
6. What is the role of companion cells in phloem?

Section C — Short Answer (5 questions, 3 marks each)

1. Describe the structure and function of epidermis in plants. How does cuticle help plants in dry habitats?
2. Differentiate between parenchyma, collenchyma and sclerenchyma on the basis of cell wall and living/dead nature (one point each).
3. Explain why xylem is called a complex permanent tissue. List its components.
4. Describe the structure of a neuron with the function of each part.
5. Distinguish between voluntary and involuntary muscles (any three points).

Section D — Long Answer (3 questions, 5 marks each)

1. Describe the three types of meristematic tissues in plants with their locations and functions. Draw a labelled diagram showing the location of apical meristem in a sapling.
2. Explain the structure and functions of the three types of simple permanent tissues in plants. How do their structural features relate to their supportive roles?
3. Describe the structure and functions of the four types of animal tissues. Explain how muscular and nervous tissues work together during movement.

Section E — Case/Source-Based (2 questions, 4 marks each)

Case 1: In an experiment, two onion bulbs were placed in jars filled with water. Roots in Jar A grew continuously while roots in Jar B stopped growing after their tips were cut on day 3.

(a) Which tissue is present at the root tips responsible for growth?
(b) Name the type of meristem and its location.
(c) What would happen if the tips of young stems were also cut?
(d) Why do meristematic cells have dense cytoplasm and prominent nuclei?

Case 2: During exercise, a person breathes faster, the face turns red and muscles need more oxygen. Blood contains RBCs with haemoglobin, WBCs and platelets.

(a) Which connective tissue is responsible for transport of oxygen?
(b) What is the role of platelets?
(c) Why does the face appear red during exercise?
(d) Name the tissue that receives signals from the brain to increase heart rate.