IGCSE Biology Paper-3: Specimen Questions with Answers 247 - 249 of 358

Passage

A typical leaf contains different types of cells.

Represents a typical leaf.

Surface of Most Leaves

Question 247 (2 of 2 Based on Passage)

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State the name of the thin, transparent layer of wax which covers the surface of most leaves.

Explanation

Each leaf bears upper and lower epidermis. Each of them consists of single layer of compactly arranged parenchymatous cells. Exception – multilayered upper epidermis is found in Ficus elastica, Piper. Cuticle is present on both surfaces but cuticle of upper epidermis is thicker.

Passage

shows a diagram of the heart.

Structure of Photosynthesis

Question 248 (1 of 4 Based on Passage)

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State one function of the liver and one function of the small intestine.

Function of the liver …

Function of the small intestine …

Explanation

Function of Liver

Production of bile, which helps carry away waste and break down fats in the small intestine during digestion. Production of certain proteins for blood plasma. Production of cholesterol and special proteins to help carry fats through the body.

Function of Small Intestine

The small intestine is chiefly involved in the digestion and absorption of nutrients. It receives pancreatic secretions and bile through the hepatopancreatic duct which aid with its functions.

Question 249 (2 of 4 Based on Passage)

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Describe how the protein in food is digested in the alimentary canal.

Explanation

Protein Food

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