REVISION QUIZ

During a scientific investigation, a student wanted to determine whether a green

leaf had carried out photosynthesis during the day. She took the leaf to the

laboratory to test for the presence of starch, which would indicate that

photosynthesis had occurred. Which test should the student use to confirm the presence of starch in the leaf?

• Benedict’s test

• Iodine test

• Biuret test

• Ethanol test

A plant is placed under red light and another under green light. Which one is

likely to photosynthesize better and why?

• Red light, because chlorophyll absorbs it well

• Both equally, as light is light

• Neither, as plants only need sunlight

• Green light, because it is absorbed more

Water enters the plant by ____ ____ cell.

Water from the soil enters a plant.

This process is called as __________.

Water moves from the leaf to the air.

Write down the name of this process.

Climate change causes desertification.

Circle the cause of desertification due to climate change.

• grassland with too many animals

• land over used for crops

• trees cut down by humans

• less rain

What are two possible consequences ( future impact) of desertification in the future?

Which structure in a plant cell is responsible for carrying out photosynthesis?

Show the pathway of water

into and out of a plant.

Reorder the follwing -

leaf, leaf xylem,

root hair cell, root xylem, stem xylem.

Rina investigates the average temperature for 6 months in her town. She does two experiments to record the temperature each month. She uses the same thermometer and method for both experiments. Look at Rina’s results.

Rina concludes that her results are precise.
State yes or no.

Give a reason for your answer.