Biology [NSTSE (National Science Talent Search Exam- Unified Council) Class 9]: Questions 154 - 158 of 518

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Question 154

Question MCQ▾

What is presynaptic bulb and postsynaptic bulb?

Choices

Choice (4)Response

a.

Axon terminal of one neuron and dendrite of other adjacent neuron connected or separated by synapse

b.

Dendrite terminal of one neuron and Axon of other adjacent neuron connected or separated by synapse

c.

Axon terminal of one neuron and Axon of other adjacent neuron connected or separated by synapse

d.

Dendrite terminal of one neuron and dendrite of other adjacent neuron connected or separated by synapse

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Question 155

Question MCQ▾

In Plants which of the following is responsible for apical growth

Choices

Choice (4)Response

a.

Xylem

b.

Permanent Tissue

c.

Phloem

d.

Meristematic tissue

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Question 156

Question MCQ▾

Which of the following act as insulating layer of the body?

Choices

Choice (4)Response

a.

Epidermis

b.

Connective tissue

c.

Adipose tissue layer

d.

Dermis

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Question 157

Question MCQ▾

Which of the following has multilobed nucleus?

Choices

Choice (4)Response

a.

Monocytes

b.

Lymphocytes

c.

Neutrophil

d.

Erythrocytes

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Question 158

Question MCQ▾

Difference between heartwood and sapwood is

Choices

Choice (4)Response

a.

Sapwood is involved in ascent of sap but heartwood is dead non functional

b.

Sapwoods are gymnosperms whereas heartwoods are angiosperms.

c.

Sapwood contains living cells whereas heartwood does not.

d.

All a., b. and c. are correct

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