NSO Level 1- Science Olympiad (SOF) Class 9: Questions 538 - 541 of 1128

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Question 538

Question

MCQ▾

Parenchyma is a type of ________.

Choices

Choice (4)Response

a.

Phloem

b.

Simple tissue

c.

Complex tissue

d.

Xylem

Question 539

Question

MCQ▾

Which one of the following is a function of white blood cells

Choices

Choice (4)Response

a.

Act as soldiers, scavengers and builders of the body

b.

Help in transporting oxygen

c.

Help in blood clotting

d.

All of the above

Question 540

Question

MCQ▾

During a disease outbreak, which of the following measure taken can completely prevent the infection from attacking the poultry?

Choices

Choice (4)Response

a.

Proper cleaning

b.

Disinfectant spraying

c.

Sanitation

d.

Vaccination

Question 541

Question

MCQ▾

The table shows the difference between a suspension and a colloidal solution. Some of the points are incorrect. Find them

The Table Shows the Difference between a Suspension and a Colloidal Solution
Point of differenceSuspensionColloidal solution
1Particles are not visible by naked eyeParticles are visible by naked eye
2Solute particles settle down when kept undisturbedSolute particles do not settle down when kept undisturbed
3Can be separated by filtrationCan be separated by centrifuging

Choices

Choice (4)Response

a.

3

b.

1 & 2

c.

2

d.

1

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