Name 3 plant hormones.

  1. Auxins.


  1. Gibberellin.


  1. Ethene.

Answer in your head, out loud, or on paper, then tap the card to flip.

What are 3 uses of auxins in agriculture and horticulture?

1In weedkillers.


2In rooting powders.


3To promote growth in tissue cultures.

Answer in your head, out loud, or on paper, then tap the card to flip.

Explain how auxins can be used in weedkillers.

  1. Auxins stimulate plant cells to divide and grow.
  2. If large amounts of auxins are added to plants, it can disrupt their growth process by overstimulating them.
  3. This can kill the plant.

Answer in your head, out loud, or on paper, then tap the card to flip.

What is a 'selective' weedkiller?

It only kills some types of plants, not all plants. 

Answer in your head, out loud, or on paper, then tap the card to flip.

What does it mean for a seed to be 'dormant?'

Dormancy is the period in which seeds are inactive and do not grow or develop.

Answer in your head, out loud, or on paper, then tap the card to flip.

What does it mean for a seed to germinate?

Germination is the process by which a seed starts to grow and develop.

Answer in your head, out loud, or on paper, then tap the card to flip.

What are 3 uses of gibberellins?

  1. To end seed dormancy.


  1. To promote flowering.


  1. To increase the size of fruits.

Answer in your head, out loud, or on paper, then tap the card to flip.

What is ethene used for?

Ethene stimulates fruit to ripen, so it can be used in the food industry to control the ripening of fruit during storage and transport.

Answer in your head, out loud, or on paper, then tap the card to flip.

What is the effect of the widespread use of weedkillers on biodiversity?

Widespread use of weedkillers will reduce biodiversity, as it kills plants.

Answer in your head, out loud, or on paper, then tap the card to flip.