Question

Consider the following statements (i)- (iii), each with one or two blanks.
(i) Bones have a hard and non-pliable ground substance rich in _____ (1) and _____ (2) which give bone its strength,
(ii) Some of the columnar or cuboidal cells get specialised for secretion and are called ______ (3) epithelium
(iii) ______ (4) junctions help to stop substances from leaking across a tissue.
Which one of the following option, gives the correct fill ups for the respective blanks from (1) to (4) in the statements?

• A. (3)- glandular; (4)- Tight
• B. (1)- calcium salts; (2) collagen fibres; (3)- compound; (4)- Excretory
• C. (3)- glandular; (4)- Adhering
• D. (1)- magnesium salts; (2) elastic fibres; (3)- compound

Answer 1

The correct option is A (3)- glandular; (4)- Tight

(i) Bones have a hard and non-pliable ground substance rich in (1) 'calcium salts' and (2) 'collagen fibres' which give bone its strength.

(ii) Some of the columnar or cubical cells get specialised for secretion and are called (3) 'glandular' epithelium.

(iii) (4)'Tight' junctions help to stop substances from leaking across a tissue.

So, the correct answer is '(3)- glandular; (4)- Tight'.