Chemical co-ordination in plants

What response is shown in the diagram

• Positive phototropism

• Negative phototropism

• Positive geotropism

• Negative geotropism

Where on this diagram would auxin be made?

• The sun

• The stem tip

• Throughout the stem

• The darker side of the stem (B)

What effect does auxin have on the cells on the shady side of the stem?

• Celle bend

• Cells elongate

• Cells divide

• Cells shrink

Auxins are responsible for _____________ of a plant

• Colour change

• Watering

• Phototropism

• Growth

Tags

NGSS.MS-LS1-5

Examples of dwarf plants where gibberellins cause rapid growth are

• Grapes, Cabbage, Corn

• Deciduous trees

• Bananas, Avocado

• Watermelon, Rockmelon, Honeydew melon

Phototropism is

• The plant response to water

• The plant response to light

• The plant response to gravity

• The plant response to soil

Tags

NGSS.MS-LS1-5

Geotropism is

• The plant response to light

• The plant response to water

• The plant response to soil

• The plant response to gravity

Which hormone promotes seed germination?

• abscisic acid
• ethene
• gibberellin
• auxin

Which of the following responses is a plant growing toward or leaning toward light?

• thigmotropism
• hydrotropism
• phototropism
• gravitropism

Plant’s roots grow down, anchoring it into the soil. To what stimulus is the plant responding?

• thigmotropism
• hydrotropism
• phototropism
• geotropism