Home
Class 11
BIOLOGY
Assertion : Deposits of protein keratin ...

Assertion : Deposits of protein keratin are present in deeper layers of stratified keratinised squamous epithelium.
Reason : Keratin makes this epithelium impervious to water.

A

If both the assertion and the reason are true and the reason is a correct explanation of the assertion

B

If both the assertion and reason are true but the reason is not a correct explanation of the assertion

C

If the assertion is true but the reason is false

D

If the assertion is false but reason is true

Text Solution

Verified by Experts

The correct Answer is:
D

The cells layer of keratin is named the stratum corneum. It consist of stratified squamous epithelial cell upper layer of skin keratin is an intracellular fibrous protein that gives hairs, nails and skin their hardness and water resistance properties.
Promotional Banner

Similar Questions

Explore conceptually related problems

Stratified and non-keratinised squamous epithelium occurs in

The non-keratinized stratified squamous epithelium is present in

Give an account of the keratinised stratified squamous epithelium.

The protein deposited in the dead superficial cells that makes the skin epitheli um impervious to water is

Stratified squamous non-keratinized epithelium is present in the lining of

Assertion : All enzymes are proteins but all proteins are not enzymes. Reason : Keratin is an enzyme.

Read the following statements and select the correct ones (i) In simple cuboidal epithelium nuclei are rounded and lie in the centre of the cells. (ii) Non - keratinized epithelium is impervious to water. (iii) Yellow elastic fibrocartilage makes cartilage flexible. (iv) Areolar tissue forms a shock absorbing cushion around the eye balls and kidneys.

Assertion: The diffusion membrane is made up of three major layers namely, the thin squamous epithelium of alveoli, the endothelium of alveolar capillaries and the basement membrane in between Reason: The total thickness of the diffusion membrane is much greater than a millimetre.

In the following questions , a statement of assertion (A) is followed by a statement of reason (R). A: Surfaces such as tongue are lined by compound epithelium R: Many layers in epithelium are present on surfaces prone to abrasion.