P6 Science Revision 1

The diagram shows organisms in a food chain.

What is the source of energy for this food chain?

• sun

• water

• nutrients

• carbon dioxide

Study the family tree of Tom in the diagram. The family tree shows the members who are either tongue rollers or non-tongue rollers.

Which one of the following statements about the family tree is correct?

• Tom's parents are tongue rollers.

• Tom and his brother are non-tongue rollers.

• Tom's father has a brother who is a tongue roller.

• Both Tom's grandfathers are non-tongue rollers

Fruit trees, vegetables and butterflies make up a community in a farm. The farmer sprayed insecticide on the vegetables when he found that they were eaten by caterpillars.

How would the spraying of insecticide affect the amount of vegetables and fruits produced?

• Vegetables - increase

  Fruits - increase

• Vegetables - increase

  Fruits - decrease

• Vegetables - decrease

  Fruits - increase

• Vegetables - decrease

  Fruits - decrease

The graphs show how the number of flowers of plant A and the number of butterfly B change throughout the year.

Given the butterfly B only feeds on the nectar of the flowers of plant A, which one of the following graphs is correct?

• 
• 
• 
• 

The diagram shows the movement of blood to and from a human heart.

Which one of the following about the blood in blood vessels A and B is correct?

• A - rich in carbon dioxide

  B - rich in oxygen

• A - poor in carbon dioxide

  B - poor in oxygen

• A - rich in carbon dioxide

  B - poor in oxygen

• A - poor in carbon dioxide

  B - rich in oxygen

Mary puts a balsam plant into a beaker of water in which some blue ink has been added. A few hours later, she observes that the flowers turn from white to blue.

What does this experiment show?

• The stem joins the roots to the rest of the plant.

• The stem carries water form the roots to the rest of the plant.

• Water is absorbed by the plant only through its roots.

• Water is lost to the surroundings from every part of the plant.

The diagram below shows the flower of a plant.

In which parts of the flower are pollen grains and the ovules produced?

• Pollen Grain - A

  Ovules - C

• Pollen Grain - A

  Ovules - D

• Pollen Grain - B

  Ovules - C

• Pollen Grain - B

  Ovules - D

The arrows, A, B, C and D, represent blood vessels carrying blood to and from the lungs, heart and other parts of our body.

Which two blood vessels carry blood with less oxygen?

• A and B

• A and C

• B and C

• C and D

The diagram below shows the human digestive system.

In which part, A, B, C or D, is food digested and passed into the blood vessel?

• A

• B

• C

• D

Which of the following is a source of energy for plants?

• sun

• water

• oxygen

• carbon dioxide