NSTSE (National Science Talent Search Exam- Unified Council) Class 4: Questions 1250 - 1254 of 1971

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Question number: 1250

» General Science » Plants and Their Food

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Question

Statement A: All green plants have chlorophyll pigment.

Statement B: Without chlorophyll, photosynthesis cannot take place.

From the above statements, Sarita concluded that the dark red colored croton plants in her garden cannot prepare food on its own. But her teacher said that it is not correct. Why?

Choices

Choice (4) Response

a.

Croton plants are green but do not contain chlorophyll

b.

Croton plants are dark red in color but do not contain chlorophyll

c.

Croton plants have chlorophyll but it is hidden by dark red colour

d.

Croton plants do not have chlorophyll but they can prepare their own food.

Question number: 1251

» General Science » Plants and Their Food

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Question

When iodine is added to a starch solution, the color is changed to:

Choices

Choice (4) Response

a.

Reddish brown

b.

Red

c.

Blue back

d.

Green

Question number: 1252

» General Science » Plants and Their Food

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Question

Veins:

Choices

Choice (4) Response

a.

Absorb carbon dioxide from the atmosphere

b.

Transport water, food and minerals in a leaf

c.

Release oxygen and carbon dioxide into the atmosphere

d.

Absorb water and minerals from the soil

Question number: 1253

» General Science » Plants and Their Food

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Question

Leaves exchange gases through their ________ into the atmosphere.

Choices

Choice (4) Response

a.

Air

b.

Seeds

c.

Lungs

d.

Stomata

Question number: 1254

» General Science » Plants and Their Food

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Question

Which of the following gas needed for photosynthesis?

Choices

Choice (4) Response

a.

Carbon dioxide

b.

Hydrogen

c.

Water vapor

d.

Nitrogen

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