IGCSE Biology Paper-3: Specimen Questions with Answers 173 - 178 of 358

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Passage

Figure shows the teeth of an adult human.

Image Shows the Inner Part of Adult Human

Question 173 (2 of 5 Based on Passage)

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Short Answer▾

Which is the hardest substance of the body

Explanation

Enamel of teeth is the hardest substance of the body

Question 174 (3 of 5 Based on Passage)

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Short Answer▾

Label the enamel

Explanation

Part A is enamel.

Question 175 (4 of 5 Based on Passage)

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Short Answer▾

Name two minerals, which are useful for oral health?

Explanation

Calcium and iron

Question 176 (5 of 5 Based on Passage)

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Short Answer▾

What is the function of Gingivae

Explanation

It protects the jawbone, roots of the teeth, and gives a lubricated surface.

Question 177

Question

MCQ▾

What are the main characteristics of kingdom Protista?

Choices

Choice (4)

a.

Prokaryotic mostly unicellular

b.

Eukaryotic and mostly multicellular

c.

Eukaryotic and mostly unicellular

d.

Prokaryotic and multicellular

Answer

c.

Explanation

These are eukaryotic organisms, which are not classified like plant and Animalia and fungus . they, are mostly unicellular. It lakes the cell complexity like plant cells.

Question 178

Question

MCQ▾

What is immigration?

Choices

Choice (4)

a.

One way outward movement of individual into an area

b.

Periodic movement of individual into an area

c.

One way inward movement of individual into an area

d.

All of the above

Answer

c.

Explanation

immigration is the drive of non-intrinsic people into a nation in order to settle there.

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