IGCSE Biology Paper-1: Specimen Questions with Answers 7 - 10 of 208

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Question 7

Question

MCQ▾

The diagram shows a cell.

Identify this Cell – a Plant or Animal Cell?

What type of cell is shown?

Choices

Choice (4)

a.

palisade

b.

muscle

c.

epidermis

d.

nerve

Answer

a.

Explanation

Image showing palisade type of cell.

Image Showing Palisade Cell Structure

Question 8

Question

MCQ▾

Which solution of iodine turns black in the presence of starch?

Choices

Choice (4)

a.

Methyl solution

b.

Eosin

c.

Carmine

d.

Lugol՚s solution

Answer

d.

Explanation

Lugol՚s iodine (IKI) is a brown solution that changes to black in the presence of starches and can be used as a cell stain, making the cell nuclei more visible.

Question 9

Question

MCQ▾

Which characteristic is shown by all living things?

Choices

Choice (4)

a.

sleeping

b.

growing

c.

walking

d.

breathing

Answer

b.

Explanation

Listed here are the six rules used by scientists:

  • Living things are made of cells.
  • Living things obtain and use energy.
  • Living things grow and develop.
  • Living things reproduce.
  • Living things respond to their environment.
  • Living things adapt to their environment.

Question 10

Question

MCQ▾

The diagram shows cells after they have been stained with iodine solution.

Stained Cells by Iodine Solution

Which part gets stained?

Choices

Choice (4)

a.

Fats

b.

Lipid

c.

Protein

d.

Starch

Answer

d.

Explanation

Iodine is used in chemistry as an indicator for starch.

When starch is mixed with iodine in solution, an intensely dark blue color develops, representing a starch/iodine compound.

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