PLANT TROPISM

Thirty woodlice were placed in the centre of a dish with four compartments, each with different conditions. The diagram shows the number of woodlice that had moved into the different compartments after twenty minutes. What do these results show?

• Woodlice prefer light and damp conditions.

• Woodlice prefer light and dry conditions.

• Woodlice prefer to be in the dark.

• Woodlice prefer to be in the light.

Which response is a result of geotropism?

• flowers being produced

• roots growing downwards

• growing bigger leaves

• seeds germinating

The diagram shows a shoot that has been placed on its side. The shoot begins to grow upwards. What causes the shoot to grow upwards?

• more cell elongation at Q than P

• more cell elongation at P than Q

• increased cell division by mitosis at P

• increased cell division by meiosis at P

Some roots are known to be geotropic. Which pair of diagrams shows a controlled experiment to find out if these roots are also phototropic?

• 1 AND 2

• 1 AND 3

• 2 AND 3

• 2 AND 4

• A

• B

• C

• D

• A

• B

• C

• D

The diagram shows shoots of maize seedlings. Which shoot shows negative geotropism?

• A

• B

• C

• D

The diagram shows a shoot growing towards light.

Which statement about the role of auxin in phototropism is correct?

• Auxin will move to the dark side of the shoot and cause cells to elongate.

• Auxin will move to the dark side of the shoot and prevent cells from elongating.

• Auxin will move to the light side of the shoot and cause cells to elongate.

• Auxin will move to the light side of the shoot and prevent cells from elongating.