Tissues Science - Tissues

Collenchyma mainly forms:

Rhythmic contraction and relaxation throughout life, are shown by:

Simple epithelium is:

Father of histology is:

In the following Questions, the Assertion and Reason have been put forward. Read the statements carefully and choose the correct alternative from the following:
Assertion: Simple tissue is made up of only one type of cell.
Reason: Types of simple tissues in plants are parenchyma, collenchyma and sclerenchyma.

In the following Questions, the Assertion and Reason have been put forward. Read the statements carefully and choose the correct alternative from the following:
Assertion: The cells of connective tissues except blood secret fibre.
Reason: Fibres provide strength, elasticity and flexibility to the tissues.

In each of the following questions, a statement of Assertion is given by the corresponding statement of Reason. Of the statements, mark the correct answer as:
Assertion: Water hyacinth can float on water surface.
Reason: Aerenchyma tissue is present in water hyacinth.

In each of the following questions, a statement of Assertion is given by the corresponding statement of Reason. Of the statements, mark the correct answer as:
Assertion: Apical meristem is present at shoot and root tips.
Reason: It helps in the longitudinal growth of plants.

In each of the following questions, a statement of Assertion is given by the corresponding statement of Reason. Of the statements, mark the correct answer as:
Assertion: Heart can pump blood throughout the body.
Reason: It is made up of cardiac muscles.

Xylem fibres help in conduction of water upwards. [True/ False]

Cells of connective tissue are compactly packed with no intercellular spaces.

Vacuoles are absent in meristematic plant cell.

Fill in the blanks. _______ both conducting tissues.

Bone consists of _______ cells.

A nerve impulse passes from one neuron to another across a __________.

Tendons connect muscles with ________.

_________ consists of tracheids, vessels, parenchyma and fibres.

What is goblet cell?

Name the tissue responsible for movement in our body.

Why are striated muscles called skeletal muscles?

Name the type of muscles present in:

Alimentary canal.

What is the function of companion cells?

What is the number of blood platelets?

Name the following:

1. Neurons which carry impulses towards brain.
2. Process of neuron which carries impulses away from cyton.

Differentiate between Chlorenchyma and Aerynchyma.

Name the tissue and write characteristic feature of following. Connects bone to bone in humans.

What are tissues? Give importance of tissue.

Name the type of tissue present, where transportation of substances occurs through the selectively permeable membrane.

Define the following: tendon, ligament and cartilage.

Give a short account of structure and function of adipose tissue.

Give any two functions performed by epithelial tissue.

What are the various types of cells of connective tissue?

Differentiate between meristematic and permanent tissues in plants.

What are the different tissues in alimals.

What are meristematic tissues? Explain with the help of suitable diagram. Give their classification on the basis of their position in the plant body.

Define muscular tissue, Classify and explain different types of muscles with the help of suitable diagrams.

Xylem is made of:

Whose living cells provide tensile and mechanical strength?

White fibres of connective tissue are made up of:

While doing work and running, you move your organs like hands, legs, etc. Which among the following is correct?

Whidr of the following cells is found in the cartilaginous tissue of the body?

In the following Questions, the Assertion and Reason have been put forward. Read the statements carefully and choose the correct alternative from the following:

1. Both the Assertion and the Reason are correct and the Reason is the correct explanation of the Assertion.
2. The Assertion and the Reason are correct but the Reason is not the correct explanation of the Assertion.
3. Assertion is true but the Reason is false.
4. The statement of the Assertion is false but the Reason is true.

Assertion: The cells of connective tissues except blood secret fibre.
Reason: Fibres provide strength, elasticity and flexibility to the tissues.

In the following Questions, the Assertion and Reason have been put forward. Read the statements carefully and choose the correct alternative from the following:

1. Both the Assertion and the Reason are correct and the Reason is the correct explanation of the Assertion.
2. The Assertion and the Reason are correct but the Reason is not the correct explanation of the Assertion.
3. Assertion is true but the Reason is false.
4. The statement of the Assertion is false but the Reason is true.

Assertion: Simple tissue is made up of only one type of cell.
Reason: Types of simple tissues in plants are parenchyma, collenchyma and sclerenchyma.

In each of the following questions, a statement of Assertion is given by the corresponding statement of Reason. Of the statements, mark the correct answer as:

1. If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
2. If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
3. If Assertion is true, but Reason is false.
4. If Assertion is false, but Reason is true.
5. If both Assertion and Reason are false.

Assertion: Water hyacinth can float on water surface.

Reason: Aerenchyma tissue is present in water hyacinth.

In each of the following questions, a statement of Assertion is given by the corresponding statement of Reason. Of the statements, mark the correct answer as:

1. If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
2. If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
3. If Assertion is true, but Reason is false.
4. If Assertion is false, but Reason is true.
5. If both Assertion and Reason are false.

Assertion: Heart can pump blood throughout the body.

Reason: It is made up of cardiac muscles.

In each of the following questions, a statement of Assertion is given by the corresponding statement of Reason. Of the statements, mark the correct answer as:

1. If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
2. If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
3. If Assertion is true, but Reason is false.
4. If Assertion is false, but Reason is true.
5. If both Assertion and Reason are false.

Assertion: Apical meristem is present at shoot and root tips.

Reason: It helps in the longitudinal growth of plants.

Water and minerals are conducted by _________.

_______ tissue controls the body activities.

The junction of two neurons is called _________.

Tendons connect muscles with ________.

Phloem conducts ________ in plants.

Xylem fibres help in conduction of water upwards. [True/ False]

Write true (T) or false (F).
The lining of blood vessels, lung alveoli and kidney tubules are all made up of epithelial tissue.

Write true (T) or false (F).
Epithelial tissue is protective tissue in animal body.

Write true (T) or false (F).
Epithelial layer is permeable layer.

Write true (T) or false (F).
Epithelial layer does not allow regulation of materials between body and external environment.

Why do animals consume moew energy as compared to plants?

Why are striated muscles called skeletal muscles?

Why are connective tissue named so?

Which type of WBC is most abundant in lymph?

Which type of tissues are more common in plants.

You can very easily bend the stem of a plant without breaking it. Name the tissue in the plant, which makes it possible. Where is it located? State any two characteristics of the cells of this tissue.

Write the name of varuous types of white blood cells (WBCs).

Write one main function of:

1. Apical meristem.
2. Lateral meristem.

Write one function of fluid connective tissue.

Write a short note on sclerenchyma.

Write the functions of parenchyma, collenchymas and sclerenchyma.

Write one function of squamous epithelium.

Write down names of different types of plant tissues.

Write down about location, structure and functions of parenchyma.

Write a note on collenchymas.

Write important functional differences between striated and smooth muscle tissues. Draw a labeled diagram of the muscle tissue that shows rhythmic contraction and relaxation throughout the life.

Why are xylem and phloem called complex tissues? How are they different from one other?

What will happen if:

1. Apical meristem is damaged or cut?
2. Cork is not formed in older stems and roots.
3. Lymph is not returned to blood?

What is simple tissue? Classify and explain its Different types with suitable diagram.

What is lymph? Describe its function.

The covering or protective tissues in the animal body are epithelial tissues. Epithelium covers most organs and cavities within the body. External and Internal covering of the body and organs are all made of epithelial tissue.

Epithelial tissue cells are tightly packed and form a continuous sheet. They have only a small or almost no intercellular spaces.it plays an important role in regulating the exchange of materials between the body and the external environment and also between different parts of the body.

Simple squamous epithelial cells are extremely thin and flat and form a delicate lining. The oesophagus and the lining of the mouth are also covered with squamous epithelium. The skin, which protects the body, is also made of squamous epithelium.

Where absorption and secretion occur, as in the inner lining of the intestine, tall epithelial cells are present. This columnar (meaning ‘pillar-like’) epithelium facilitates movement across the epithelial barrier. In the respiratory tract, the columnar epithelial tissue also has cilia, which are hair-like projections on the outer surfaces of epithelial cells. These cilia can move, and their movement pushes the mucus forward to clear it. This type of epithelium is thus ciliated columnar epithelium.

Cuboidal epithelium (with cube-shaped cells) forms the lining of kidney tubules and ducts of salivary glands, where it provides mechanical support. Epithelial cells often acquire additional specialisation as gland cells, which can secrete substances at the epithelial surface. Sometimes a portion of the epithelial tissue folds inward, and a multicellular gland is formed. This is glandular epithelium.

(1) The ciliated columnar epithelium is present in

(a) Respiratory tract

(b) Bile duct and oesophagus

(c) Fallopian tube and urethra

(d) Eustachian tube and stomach lining

(2) The cuboidal epithelium is present in

(a) Bronchioles

(b) Bile duct and oesophagus

(c) Fallopian tube and urethra

(d) Kidney tubules ducts of salivary glands

(3) External and Internal covering of the body and organs are all made of ________

(a) Skin Tissue

(b) Epithelial Tissue

(c) Nerves Tissue

(d) Connective Tissue

(4) How are cells arranged in epithelial tissue?

(a) Loosely packed  

(b) Closely packed

(c) Arranged in discontinuous form   

(d) Both a and c

(5) Enlist the types of Epithelial Tissue?

Muscular tissue consists of elongated cells, also called muscle fibres. This tissue is responsible for movement in our body. Muscles contain special proteins called contractile proteins, which contract and relax to cause movement

We can move some muscles by conscious will. Such muscles are called voluntary muscles. These muscles are also called skeletal muscles as they are mostly attached to bones and help in body movement. Under the microscope, these muscles show alternate light and dark bands or striations, hence they are also called striated muscles. The cells of this tissue are long, cylindrical, unbranched and multinucleate.

The movement of food in the alimentary canal or the contraction and relaxation of blood vessels are involuntary movements. We can’t control these muscle movement. The Smooth muscles or involuntary muscles control such movements. They are also found in the iris of the eye, in ureters and in the bronchi of the lungs. The cells are long with pointed ends (spindle-shaped) and uninucleate. They are also called unstriated muscles.

The muscles of the heart show rhythmic contraction and relaxation throughout life. These involuntary muscles are called cardiac. Heart muscle cells are cylindrical, branched and uninucleate.

(1) Which of the following muscle tissue are voluntary in nature?

(a) Cardiac muscle

(b) Smooth muscle

(c) auto rhythmic muscle

(d) None of the above

(2) The muscles whose contraction is under our control are known as

(a) Voluntary muscles

(b) Involuntary movements

(c) Cardiac muscle

(d) Unstrained muscle

(3) The smooth muscle are found in the

(a) Iris of eye

(b) Uterus

(c) Bronchi of lungs

(d) All of above

(4) Give the characteristic of striated muscles.

(5) Give the characteristic of unstriated muscles.

Meristematic tissue take up a specific role and lose the ability to divide. As a result, they form a permanent tissue. This process of taking up a permanent shape, size, and a function is called differentiation. Differentiation leads to the development of various types of permanent tissues.

Simple Permanent Tissue

Tissue made of one type of cells, which look like each other. Such tissues are called simple permanent tissue. Parenchyma is the most common simple permanent tissue. It consists of relatively unspecialised cells with thin cell walls. They are living cells. They are usually loosely arranged, thus large spaces between cells (intercellular spaces) are found in this tissue. This tissue generally stores food. In some situations, it contains chlorophyll and performs photosynthesis, and then it is called chlorenchyma. In aquatic plants, large air cavities are present in parenchyma to help them float. Such a parenchyma type is called aerenchyma.Yet another type of permanent tissue is sclerenchyma. It is the tissue which makes the plant hard and stiff. We have seen the husk of a coconut. It is made of sclerenchymatous tissue. The cells of this tissue are dead. They are long and narrow as the walls are thickened due to lignin.

Simple Permanent Tissue

Complex tissues are made of more than one type of cells. All these cells coordinate to perform a common function. Xylem and phloem are examples of such complex tissues. They are both conducting tissues and constitute a vascular bundle. Xylem fibres are mainly supportive in function. Phloem transports food from leaves to other parts of the plant. Except phloem fibres, other phloem cells are living cells.

(1) Tissue made of only one type of cell is termed as _________

(a) Simple permanent tissue

(b) Complex permanent tissue

(c) Simple Meristematic tissue

(d) Complex Meristematic tissue

(2) Xylem and phloem are examples of

(a) Meristematic tissue

(b) Simple tissue

(c) Protective tissue

(d) Complex tissue

(3) In aquatic plants, which type of parenchymatissue is found?

(a) Aerenchyma

(b) Chlorenchyma

(c) Sclerenchyma

(d) Parenchyma

(4) What is mean by Differentiation?

(5) Enlist the type of parenchyma tissue.

Blood is a type of connective tissue. The cells of connective tissue are loosely spaced and embedded in an intercellular matrix. The matrix may be jelly like, fluid, dense or rigid. The nature of matrix differs in concordance with the function of the particular connective tissue.

Blood has a fluid (liquid) matrix called plasma, in which red blood corpuscles (RBCs), white blood corpuscles (WBCs) and platelets are suspended. The plasma contains proteins, salts and hormones. Blood flows and transports gases, digested food, hormones and waste materials to different parts of the body.

Bone is another example of a connective tissue. It forms the framework that supports the body. It also anchors the muscles and supports the main organs of the body. It is a strong and nonflexible tissue. Bone cells are embedded in a hard matrix that is composed of calcium and phosphorus compounds. Two bones can be connected to each other by another type of connective tissue called the ligament. This tissue is very elastic.

Another type of connective tissue, cartilage, has widely spaced cells. The solid matrix is composed of proteins and sugars. Cartilage smoothens bone surfaces at joints and is also present in the nose, ear, trachea and larynx.

Areolar connective tissue is found between the skin and muscles, around blood vessels and nerves and in the bone marrow. It fills the space inside the organs, supports internal organs and helps in repair of tissues.

(1) A connective tissue

(a) Has no matrix

(b) Covers the skin

(c) Has abundant matrix

(d) None of these

(2) Areolar connective tissue is found between

(a) Skin and muscles

(b) Blood vessels and nerves

(c) Both a & b

(d) None of these

(3) Two bones are connected to each other by another type of connective tissue called__

(a) Ligament

(b) Cartilage

(c) Bone marrow

(d) Blood

(4) What are the function of connective tissue?

(5) Give the examples of connective tissue.