Chapter: 3 – Tissues in Action
Maximum Marks: 50
Suggested Time: 1 Hour 30 Minutes
This Class 9 Science Exploration Chapter 3 Sample Paper 1 is designed to help students practise important concepts from “Tissues in Action.” The 50-mark paper includes objective, short-answer, application-based, and long-answer questions covering plant tissues, animal tissues, meristematic tissues, permanent tissues, epithelial tissue, connective tissue, muscular tissue, and nervous tissue. Complete solutions are provided at the end for self-assessment and revision.
Sample Paper 1
General Instructions
- All questions are compulsory.
- Read each question carefully before answering.
- Draw neat and labelled diagrams wherever required.
- Use appropriate scientific terminology.
- Write answers according to the marks allotted.
Section A — Objective Questions
10 × 1 = 10 Marks
Q1. A group of similar cells performing a specific function is called:
a) Organ
b) Tissue
c) Organ system
d) Organism
Q2. Which tissue is responsible for the growth of plants?
a) Permanent tissue
b) Meristematic tissue
c) Epidermal tissue
d) Vascular tissue
Q3. Which meristem is mainly responsible for the increase in length of a plant?
a) Lateral meristem
b) Apical meristem
c) Intercalary meristem
d) Permanent tissue
Q4. Which plant tissue transports water and minerals from roots to other parts?
a) Phloem
b) Xylem
c) Parenchyma
d) Collenchyma
Q5. Which tissue provides flexibility and mechanical support to young plant parts?
a) Collenchyma
b) Sclerenchyma
c) Parenchyma
d) Phloem
Q6. Which animal tissue covers the outer surface of the body and lines internal organs?
a) Connective tissue
b) Muscular tissue
c) Epithelial tissue
d) Nervous tissue
Q7. Which connective tissue connects muscle to bone?
a) Ligament
b) Tendon
c) Cartilage
d) Blood
Q8. Which tissue is responsible for movement of body parts?
a) Epithelial tissue
b) Muscular tissue
c) Nervous tissue
d) Connective tissue
Q9. The basic functional unit of nervous tissue is the:
a) Nephron
b) Neuron
c) Alveolus
d) Tendon
Q10. Which tissue transports food prepared by photosynthesis in plants?
a) Xylem
b) Phloem
c) Sclerenchyma
d) Collenchyma
Section B — Very Short Answer Questions
5 × 2 = 10 Marks
Q11. What is a tissue? Why are tissues important in multicellular organisms?
Q12. State two characteristics of meristematic tissue.
Q13. Differentiate between xylem and phloem.
Q14. What is epithelial tissue? Mention one of its functions.
Q15. What is the difference between a tendon and a ligament?
Section C — Short Answer Questions
4 × 3 = 12 Marks
Q16. Explain the three main types of meristematic tissue based on their location.
Q17. Differentiate between parenchyma, collenchyma and sclerenchyma.
Q18. Describe the main functions of connective tissue.
Q19. Explain the structure and function of nervous tissue.
Section D — Application-Based Questions
2 × 4 = 8 Marks
Q20. A gardener notices that the tip of a young plant is continuously increasing in length. At the same time, the stem of an older plant is becoming thicker.
Answer the following:
a) Which tissue causes the increase in length?
b) Where is this tissue located?
c) Which tissue causes the increase in thickness?
d) Where is this tissue generally found?
Q21. A student accidentally touches a hot object and immediately pulls the hand away.
Answer the following:
a) Which type of animal tissue helps detect the stimulus?
b) What is the basic unit of this tissue?
c) How does this tissue help in the response?
d) Which tissue produces the actual movement of the hand?
Section E — Long Answer Questions
2 × 5 = 10 Marks
Q22. Explain the different types of simple permanent tissues in plants. Describe their structure and functions.
Q23. Describe the four major types of animal tissues. Give their main functions and one suitable example or location for each.
SOLUTIONS
Section A — Answers
Q1. b) Tissue
Q2. b) Meristematic tissue
Q3. b) Apical meristem
Q4. b) Xylem
Q5. a) Collenchyma
Q6. c) Epithelial tissue
Q7. b) Tendon
Q8. b) Muscular tissue
Q9. b) Neuron
Q10. b) Phloem
Section B — Solutions
Q11. What is a tissue?
A tissue is a group of similar cells that are organised to perform a particular function.
Tissues are important in multicellular organisms because they allow division of labour. Different groups of cells become specialised for different functions, making the organism more efficient.
Q12. Characteristics of Meristematic Tissue
Two characteristics are:
- Meristematic cells actively divide and produce new cells.
- They generally have dense cytoplasm, prominent nuclei and little or no vacuolation.
They are responsible for the growth of plants.
Q13. Xylem and Phloem
| Xylem | Phloem |
|---|---|
| Transports water and minerals | Transports food produced by photosynthesis |
| Movement is mainly from roots towards aerial parts | Food can be transported to different parts according to the plant’s needs |
| Also provides mechanical support | Mainly functions in food transport |
Q14. Epithelial Tissue
Epithelial tissue forms a protective covering on the body’s external and internal surfaces.
One important function is protection. It can also help in absorption, secretion and exchange of substances depending on its location.
Q15. Tendon and Ligament
A tendon connects a muscle to a bone.
A ligament connects one bone to another bone and helps stabilise joints.
Section C — Solutions
Q16. Types of Meristematic Tissue
Meristematic tissue can be classified according to its location:
1. Apical Meristem
It is present at the tips of roots and shoots. It is mainly responsible for an increase in the length of the plant.
2. Lateral Meristem
It is found along the sides of stems and roots. It contributes to an increase in the thickness or girth of plant parts.
3. Intercalary Meristem
It occurs near the nodes or at the bases of leaves or internodes in certain plants. It contributes to growth in length and helps in the regeneration of tissues after cutting or grazing.
Q17. Parenchyma, Collenchyma and Sclerenchyma
| Feature | Parenchyma | Collenchyma | Sclerenchyma |
|---|---|---|---|
| Cells | Usually living | Living | Usually dead at maturity |
| Cell walls | Thin | Unevenly thickened at corners | Thick and lignified |
| Main role | Storage and other functions | Flexible support | Strength and rigidity |
| Common location | Soft parts of plants | Young stems, leaf stalks | Hard or supporting plant parts |
Parenchyma may also perform photosynthesis when chloroplasts are present.
Q18. Functions of Connective Tissue
Connective tissue connects, supports, binds and protects different parts of the body.
Its functions include:
- connecting muscles to bones through tendons;
- connecting bones to one another through ligaments;
- providing support through cartilage and bone;
- transporting substances through blood;
- storing energy in adipose tissue.
Q19. Nervous Tissue
Nervous tissue is specialised for receiving and transmitting information.
Its basic functional cells are called neurons. A neuron generally has a cell body, dendrites and an axon.
Nervous tissue receives stimuli and transmits electrical signals, helping the body coordinate responses and communicate between different parts.
Section D — Solutions
Q20. Growth in a Plant
a) The apical meristem causes the increase in length.
b) It is located at the growing tips of roots and shoots.
c) The lateral meristem contributes to the increase in thickness.
d) It is generally found along the sides of stems and roots, including tissues such as the vascular cambium and cork cambium.
Q21. Pulling the Hand Away
a) Nervous tissue detects and transmits information about the hot stimulus.
b) The basic functional unit is the neuron.
c) Nervous tissue transmits signals rapidly between sensory receptors, the nervous system and the parts involved in the response.
d) Muscular tissue produces the movement needed to pull the hand away.
Section E — Solutions
Q22. Simple Permanent Tissues
Simple permanent tissues consist mainly of one type of similar cells performing related functions. The major types are parenchyma, collenchyma and sclerenchyma.
1. Parenchyma
Parenchyma consists of living cells with relatively thin cell walls. The cells may have spaces between them.
Functions:
- storage of food and water;
- packing and filling spaces;
- photosynthesis when chloroplasts are present.
Parenchyma containing chloroplasts is called chlorenchyma.
2. Collenchyma
Collenchyma consists of living cells whose walls are unevenly thickened, particularly at the corners.
Functions:
- provides mechanical support;
- gives flexibility to young stems, leaf stalks and other growing parts;
- allows plant parts to bend without breaking easily.
3. Sclerenchyma
Sclerenchymatous cells generally have thick, lignified walls and are usually dead at maturity.
Functions:
- provides strength;
- gives rigidity and mechanical support to plant parts.
Sclerenchyma is commonly found in hard and supporting structures such as seed coats and fibres.
Q23. Four Major Types of Animal Tissues
There are four major types of animal tissues:
1. Epithelial Tissue
Epithelial tissue forms coverings and linings of the body.
Functions:
- protection;
- absorption;
- secretion;
- exchange of substances in specialised locations.
Example: Skin and lining of the digestive tract.
2. Connective Tissue
Connective tissue supports, connects and binds different body structures.
Functions:
- support;
- binding;
- transport;
- storage.
Examples: Bone, cartilage, blood, adipose tissue, tendons and ligaments.
3. Muscular Tissue
Muscular tissue contains specialised cells capable of contraction.
Function: It produces movement of body parts and helps move substances within the body.
The main types include skeletal, smooth and cardiac muscle.
Examples: Muscles attached to bones, muscles of the intestine and heart muscle.
4. Nervous Tissue
Nervous tissue is specialised for receiving and transmitting signals.
Function: It helps detect stimuli, transmit information and coordinate responses.
Example: Brain, spinal cord and nerves.
Thus, the four major animal tissues work together to provide protection, support, movement, communication and coordination throughout the body.