Free Structural Organisation In Animals (Daily Quiz: 1) NEET Biology Questions & Answers with Detailed Explanation & Full Review

Free Structural Organisation In Animals (Daily Quiz: 1) Time:

Question-1

Mast cells secrete

(a)

(b)

(c)

(d)

Explanation:

Answer: (d)

Mast cells are granulated wandering cells that are found in connective tissue. Their granules contain histamine which is a vasodilator. It causes running nose, sneezing and itching; and narrows the airways in the lungs. Their granules also contain heparin which is an anticoagulant and serotonin which acts as a mediator of inflammation and allergic reactions.


Question-2

Histamine secreting cells are found in

(a)

(b)

(c)

(d)

Explanation:

Answer: (b)

Mast cells are found in the matrix of areolar connective tissue and secrete histamine (vasodilator), serotonin (vasoconstrictor) and heparin (anticoagulant). These take part in allergic reactions and also help in a body defence.


Question-3

The ciliated columnar epithelial cells in humans are known to occur in

(a)

(b)

(c)

(d)


Question-4

Which cells do not form layer and remain structurally separate?

(a)

(b)

(c)

(d)


Question-5

Select the correct statement regarding Periplaneta americana

(a)

(b)

(c)

(d)

Explanation:

Answer: (d)

Anal style is a pair of short, thread-like structure present in males only. In both sexes, the 10th segment bears of pair of jointed filamentous structures called anal cerci.


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