Ch. 39 Plant Responses Test Review

Changes in an organisms environment that cause a response

• Tropism
• Hormone
• Stimuli
• Response

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-4

A plant growing in response to the sunlight. 

• Gravitropism 
• Phototropism
• Thigmotropism
• Hydrotropism

Tags

NGSS.MS-LS1-5

Flowers when exposed to 12 or more hours of darkness

• Short day plants
• Long day plants
• Day neutral
• Auxins

Flowers when exposed to less than 10-12 hours of darkness

• Long day plants
• Short day plants 
• Day neutral plants
• Gibberellins

Helps fruit ripen

• Auxin
• Gibberellin
• Cytokinins
• Ethylene

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

• Auxin
• Gibberellin
• Cytokinins
• Ethylene

Tags

NGSS.MS-LS1-5

Promotes cell division and prevents senescence (cell breakdown)

• Gibberellin
• Auxin
• Cytokinins
• Ethylene

Tags

NGSS.HS-LS1-4

When the plant responds to gravtiy

• Phototropism
• Thigmotropism
• Gravitropism
• Hydrotropism

Substances that act as chemical messengers within plants controlling functions

• Chemicals
• Plant Hormones
• Adrenaline
• Photosynthesis

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

• Auxin
• Cytokinins
• Ethylene
• Absisic acid