Quiz 3 Year 6 term 1 regulatory system

Plants are able to produce special .............. at the right time and place.

• chemicals

• tissues

Causes plants to grow from plant tissue

• coconut milk

• gibberellin

• auxin

Produces larger plants

• coconut milk

• gibberelin

• auxin

Form roots on stem cuttings

• coconut milk

• gibberellin

• auxin

Scientist have observed many mysteries of plants.

• True

• False

Scientist often do not know why plants can function as they do.

• True

• False

Choose all the statements that are true about harmful regulators.

• People are urged to eat food that has been naturally-grown.

• Some sprays have been found to cause cancer in people.

• People are urged to eat food that uses harmful regulators to grow food.

• Naturally-grown food is usually cheaper to produce.

• Naturally-grown food produces bigger crops for farmers.

A chemical regulator may be used to kill dandelions on your lawn.

• True

• False

Some plant regulators will cause disease in humans.

• True

• False

Some chemicals which are used to control weeds may be harmful to the environment.

• True

• False