IGCSE Biology Paper-1: Specimen Questions with Answers 18 - 20 of 109

Question number: 18

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Question

what will be the right taxonomic order?

Diagram of Taxonomic classification

Diagram of Taxonomic Classification

Finding missing data

Choices

Choice (4) Response

a.

Kingdom phylum order class family genus species

b.

Kingdom, Phylum, Class, Order, Family, Genus, Species

c.

kingdom, phylum, family class order genus species

d.

Kingdom class phylum order family genus species

Answer

b.

Explanation

There are seven taxonomic orders in classification

Question number: 19

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Question

What is the role of anaerobic respiration in yeast during brewing and bread making?

Choices

Choice (4) Response

a.

To release enough lactic acid to kill the yeast

b.

To produce the alcohol for the beer/wine, and the CO2 for the baking

c.

To produce gas to make the bread rise

d.

To release enough energy to bake the bread

Answer

b.

Explanation

When yeasts are used to make bread and for brewing, their capability to breathe anaerobically makes them useful. They produce the alcohol for the beer, and the CO2 for the baking. The CO2 makes the bread rise; the alcohol evaporates in the baking method.

Question number: 20

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Question

In which group most nutritional biodiversity is occur?

Choices

Choice (4) Response

a.

Animalia

b.

Algae

c.

Plants

d.

Monera

Answer

d.

Explanation

It is a kingdom that enclosed unicellular organisms with a prokaryotic cell association like bacteria