Biology [NSTSE (National Science Talent Search Exam- Unified Council) Class 9]: Questions 173 - 177 of 518

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Question 173

Biology
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Question

MCQ▾

Neurotransmitters move through synapses from presynaptic bulb to postsynaptic bulb by which of the following process?

Choices

Choice (4)Response

a.

Active transport

b.

Osmosis

c.

Diffusion

d.

Facilitated transport

Question 174

Biology
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Question

MCQ▾

Blood is connective tissue. It has Plasma and formed elements in it’s composition. RBCs are oxygen carrying machinery with haemoglobin protein in its cytoplasm. Which of the following is part of haemoglobin?

Choices

Choice (4)Response

a.

α- chain and α’-chain

b.

β- chain and β’- chain

c.

Both a. and b. are correct

d.

None of the above

Question 175

Biology
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Question

MCQ▾

Myeloblast, Lymphoblast, Monoblast and megakaryoblasts are precursors of

Choices

Choice (4)Response

a.

Agranulocytes, Lymphocytes, Monocytes and platelets respectively

b.

Neutrophils, basophils, acidophils and platelets respectively

c.

Granulocyte, Lymphocytes, Monocytes and platelets respectively

d.

Platelets, Lymphocyte, monocyte, and Agranulocytes respectively

Question 176

Biology
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Question

MCQ▾

Which of the following is not associated with nervous tissue?

Choices

Choice (4)Response

a.

Axon

b.

Dendrites

c.

Tendon

d.

Cell Body

Question 177

Biology
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Question

MCQ▾

Why upper surface of leaf is darker green in colour as compare to the lower surface?

Choices

Choice (4)Response

a.

No air spaces towards upper surface

b.

Upper surface has compactly arranged palisade cells

c.

More number of chlorophyll

d.

All a. , b. and c. are correct