Plant Hormones and Immunology

Which plant hormone is a gas?

• auxin
• gibberellin
• ethylene
• cytokinin

Which hormone promotes seed germination?

• abscisic acid
• ethylene
• gibberellin
• auxin

Negative geotropism is exhibited in ____, because there is more auxin on _____ side of a shoot.

• shoots, shaded

• shoots, light

• roots, shaded

• roots, light

Response to light in which plant stems bend toward a light source

• geotropism

• phototropism

• negative geotropism

• negative phototropism

When the plant responds to gravtiy

• Phototropism

• Thigmotropism

• Geotropism

• Hydrotropism

Hormone related to the growth of the plant in response to tropisms

• Auxin
• Cytokinins
• Ethene
• Absisic acid

When the plant grows toward the stimuli

• Positive
• Negative

Breaks seed dormancy and promotes growth (can make fruit bigger)

• Auxin
• Gibberellin
• Cytokinins
• Ethene

Tags

NGSS.MS-LS1-5

Helps fruit ripen

• Auxin
• Gibberellin
• Cytokinins
• Ethene

If a plant gets light from only one direction the shoots will.....

• grow straight up
• grow down
• grow toward the light source
• grow faster

Tags

NGSS.MS-LS2-1