Biology Quiz

What is transpiration?

• The absorption of water by roots

• The evaporation of water out of the stomata

• The conversion of water into oxygen

• The movement of water through the soil

What gas is being used in photosynthesis?

• Oxygen

• Nitrogen

• Carbon dioxide

• Hydrogen

Which part of the plant cell is where photosynthesis takes place?

• Nucleus

• Mitochondria

• Chloroplast

• Ribosome

What is the role of auxins in phototropism?

• Inhibit growth

• Promote growth towards light

• Cause roots to grow upwards

• Stop photosynthesis

What does positive gravitropism mean for a plant root?

• Growing upwards

• Growing sideways

• Growing downwards

• Not growing at all

Which hormone is primarily involved in plant growth responses?

• Insulin

• Auxin

• Adrenaline

• Melatonin

What is the effect of auxins on the cells on the lower side of a plant root?

• Inhibit growth

• Elongate cells

• Stop cell division

• Cause cell death

What does a positive tropism mean in plants?

• Growth towards a stimulus

• Growth away from a stimulus

• No response to a stimulus

• Random growth

What does a negative tropism mean in plants?

• Growth towards a stimulus

• Growth away from a stimulus

• No response to a stimulus

• Random growth

What is phototropism?

• Growth response towards gravity

• Growth response towards sunlight

• Growth response towards water

• Growth response towards nutrients