NCERT Solutions for Class 9 Science Chapter 6 – Tissues

Tissues are groups of similar cells that work together to perform specific functions in living organisms. They form the basis of organization in multicellular organisms and help in carrying out complex life processes efficiently.

In plants, tissues are broadly classified into simple tissues (parenchyma, collenchyma, sclerenchyma) and complex tissues (xylem and phloem). These tissues are responsible for support, storage, and transportation of water, minerals, and food.

NCERT Solutions for Class 9 Science Chapter 6 – Tissues

Tissues
Easy
Q.
Define the term “tissue”.
Tissues
Medium
Q.
How many types of elements together make up the xylem tissue? Name them.
Tissues
Medium
Q.
How are simple tissues different from complex tissues in plants?
Tissues
Medium
Q.
Differentiate between parenchyma, collenchymas and sclerenchyma on the basis of their cell wall.
Tissues
Medium
Q.
What are the functions of the stomata?
Tissues
Medium
Q.
Diagrammatically show the difference between the three types of muscle fibres.
Tissues
Easy
Q.
What is the specific function of the cardiac muscle?
Tissues
Difficult
Q.
Differentiate between striated, unstriated and cardiac muscles on the basis of their structure and site/location in the body.
Tissues
Easy
Q.
Draw a lebelled diagram of a neuron.
Tissues
Medium
Q.
Name the following

(a) Tissue that forms the inner lining of our mouth.

(b) Tissue that connects muscle to bone in humans.

(c) Tissue that transports food in plants.

(d) Tissue that stores fat in our body.

(e) Connective tissue with a fluid matrix.

(f) Tissue present in the brain.
Tissues
Medium
Q.
Identify the type of tissue in the following skin, bark of tree, bone, lining of kidney tubule, vascular bundle.
Tissues
Easy
Q.
Name the region in which parenchyma tissue is present.
Tissues
Easy
Q.
What is the role of epidermis in plants?
Tissues
Medium
Q.
How does the cork act as a protective tissue?
Tissues
Medium
Q.
Complete the table:

NCERT Solutions for Class 9 Science Chapter 6 – Tissues

In animals, tissues are categorized into epithelial, connective, muscular, and nervous tissues, each playing a crucial role in protection, movement, coordination, and transport within the body. Understanding tissues is essential to grasp how organs and organ systems function.

NCERT Solutions for Class 9 Science Chapter 6 – Tissues (Q&A)

Q1. Define the term “tissue”.

Ans: A tissue is a group of similar cells that are organized to perform a specific function.

Q2. How many types of elements together make up the xylem tissue? Name them.

Ans: Xylem tissue consists of four elements:

  • Tracheids
  • Vessels
  • Xylem parenchyma
  • Xylem fibres

Q3. How are simple tissues different from complex tissues in plants?

Ans:

  • Simple tissues are made up of only one type of cell and mainly perform storage and support functions.
  • Complex tissues consist of different types of cells and are responsible for transporting water, minerals, and food.

Q4. Differentiate between parenchyma, collenchyma, and sclerenchyma based on their cell wall.

Ans:

  • Parenchyma: Thin cell walls
  • Collenchyma: Irregularly thickened at the corners
  • Sclerenchyma: Thick and lignified cell walls

Q5. What are the functions of stomata?

Ans:

  • Facilitate exchange of gases (oxygen and carbon dioxide)
  • Help in transpiration by releasing water vapour

Q6. What is the specific function of cardiac muscle?

Ans: Cardiac muscles contract and relax rhythmically throughout life and help in pumping blood across the body.

Q7. Differentiate between striated, unstriated, and cardiac muscles.

Ans:

  • Striated muscles: Long, cylindrical, multinucleate, found in limbs
  • Unstriated muscles: Spindle-shaped, uninucleate, found in internal organs
  • Cardiac muscles: Branched, uninucleate, found in the heart

Q8. Draw a labelled diagram of a neuron.

Ans: A neuron consists of cyton, dendrites, axon, and nerve endings.

Q9. Name the following:

(a) Tissue forming inner lining of mouth – Squamous epithelial tissue
(b) Tissue connecting muscle to bone – Tendon
(c) Tissue transporting food in plants – Phloem
(d) Tissue storing fat – Adipose tissue
(e) Connective tissue with fluid matrix – Blood
(f) Tissue present in brain – Nervous tissue

Q10. Identify the type of tissue in the following:

  • Skin – Stratified squamous epithelial tissue
  • Bark of tree – Cork (protective tissue)
  • Bone – Connective tissue
  • Kidney tubule lining – Cuboidal epithelial tissue
  • Vascular bundle – Xylem and phloem

Q11. Where is parenchyma tissue present?

Ans: It is present in stems, roots, leaves, flowers, and vascular tissues.

Q12. What is the role of epidermis in plants?

Ans:

  • Protects the plant body
  • Prevents water loss
  • Facilitates gas exchange
  • Helps in water absorption in roots

Q13. How does cork act as a protective tissue?

Ans: Cork cells are tightly packed and contain suberin, making them impermeable to water and gases. This protects plants from water loss, mechanical injury, and infections.

FAQs

Q1. What are tissues in biology?

Ans: Tissues are groups of similar cells that work together to perform specific functions.

Q2. What are the main types of plant tissues?

Ans: Plant tissues are mainly classified into:

  • Simple tissues
  • Complex tissues

Q3. What is the function of xylem?

Ans: Xylem transports water and minerals from roots to different parts of the plant.

Q4. What is the function of phloem?

Ans: Phloem transports food produced in leaves to other parts of the plant.

Q5. What are the types of animal tissues?

Ans: Animal tissues are classified into:

  • Epithelial
  • Connective
  • Muscular
  • Nervous

Q6. Why are tissues important?

Ans: Tissues help in efficient functioning of multicellular organisms by dividing work among different groups of cells.