IGCSE Biology Paper-1: Specimen Questions with Answers 30 - 33 of 208

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Question 30

Question

MCQ▾

Which organ discharge a chemical substance, which blends fats and makes the diet alkaline?

Choices

Choice (4)

a.

Pancreas

b.

intestine

c.

Liver

d.

Stomach.

Answer

c.

Explanation

The liver is the largest organ in the human body the main functions of liver are

  • Storage of Nutrients
  • Breakdown of erythrocytes
  • Bile Secretion
  • Synthesis of plasma Proteins
  • Synthesis of cholesterol

Question 31

Question

MCQ▾

Pyramid of energy is?

Diagram of the Ecological Pyramids

Choices

Choice (4)

a.

a

b.

c

c.

d

d.

b

Answer

a.

Explanation

Pyramid of energy is always upright It is so because at each transfer about most of the energy exist at lower trophic level is used up to overwhelmed its entropy and to perform metabolic activities. Only 10 % of the energy is exist to next trophic level.

Question 32

Question

MCQ▾

What is the example of detritus food chain?

Choices

Choice (4)

a.

Diagram of the Food Chains – Choice A

b.

Diagram of the Food Chains – Choice B

c.

Diagram of the Food Chains – Choice C

d.

Diagram of the Food Chains – Choice D

Answer

b.

Explanation

Detritus food chain is always begins with dead organic compounds.

Question 33

Question

MCQ▾

The diagram shows an animal. it is related to which phylum?

Show a Diagram of Crab

Choices

Choice (4)

a.

Nematode

b.

Arthropod

c.

Reptiles

d.

Amphibians

Answer

b.

Explanation

Crabs are decapods, most crabs have two pairs of antennae and Crabs share the most anatomical resemblances with prawns and lobsters.

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