PHS: Edexcel sB6g Uses of plant hormones

Which plant hormones are used in selective weedkillers?

• gibberellins

• ethene

• auxins

• none

Which plant hormones are used to stimulate seed germination?

• gibberellins

• ethene

• auxins

• none

Which plant hormones are used to produce seedless fruit?

• gibberellins

• ethene

• auxins

• none

Which plant hormones are used in rooting powders?

• gibberellins

• ethene

• auxins

• none

Which plant hormones are used to ripen fruit?

• gibberellins

• ethene

• auxins

• none

Which plant hormones are used to control flower and fruit formation?

• gibberellins

• ethene

• auxins

• none

Which plant hormones causes cell elongation in shoots?

• gibberellins

• ethene

• auxins

• none

Which plant hormones inhibit cell elongation in roots?

• gibberellins

• ethene

• auxins

• none

What do we call the growth of shoots towards the light?

• positive phototropism

• negative phototropism

• positive gravitropism

• negative gravitropism

What do we call the growth of roots downwards?

• positive phototropism

• negative phototropism

• positive gravitropism

• negative gravitropism