Cell Differentiation

Q.

How does cork act as a protective tissue?

Q.

What are the functions of cork?

Q.

Why is epidermis present as a thick waxy coating of cutin in desert plants?

Q.

Are human cells totipotent?

Q.

cork cell is ___________ plant cell

Q.

Give a note on cork.

Q.

The nucleated cytoplasmic mass of a neuron is termed as

1. intercalary meristem

2. collenchyma

3. sclerenchyma

4. apical meristem

Q.

Which of the following are partially differentiated cells?

1. Zygote

2. Muscle cells

3. Foetal cells

4. Nerve cells

Q.

Which of the following is an undifferentiated cell?

1. Neurons

2. Blood cells

3. Zygote

4. Foetal cells

Q. Which of the following is an example of tissue?

1. Blood
2. Sperm
3. Neuron
4. Liver

Q.

The cells in our body divide in order to:

1. Induce growth

2. All of the these

3. To fill the vacancies left by predecessors

4. To repair and control damage

Q. The process during which meristematic tissue takes up a permanent shape, size and function is called .

1. differentiation
2. division
3. continuation

Q.

Which of the following is a unique characteristic of a stem cell?

1. Cell division

2. Cell differentiation

3. Cellular metabolism

4. Cellular catabolism

Q.

With respect to the given assertion and reason, choose the correct option.
Assertion (A): The process in which meristematic cells attain permanent shape, size and function is called differentiation.
Reason (R): Cells of meristematic tissue differentiate to form different types of permanent tissue.

1. A is correct but R is incorrect
2. A is incorrect and R is correct
3. Both A and R are correct and R is the correct explanation of A
4. Both A and R are incorrect

Q. The cells formed on the outside by the cork cambium are called .

1. guard cells
2. cork cells
3. parenchymatous cells

Q. Cells of meristematic tissue differentiate to form different types of permanent tissue.

1. False
2. True

Q. Tracheary elements of protoxylem are

1. Larger and broader
2. With advanced type of thickenings
3. Formed towards the end
4. Short narrow with primitive type of thickenings

Q. In desert plants, rate of water loss gets reduced due to the presence of .

1. cambium
2. cuticle
3. stomata