G 11 Old Ch 9 (Quiz 1)

How do organisms respond to their surroundings?

• By ignoring stimuli
• By staying still
• By responding to stimuli
• By hiding

Which of the following stimuli do plants respond to?

• Light and gravity
• Smells and tastes
• Temperature and sound
• All of the above

What are the two types of messages resulting from information received by sensory cells?

• Chemical and electrical
• Mechanical and thermal
• Magnetic and electromagnetic
• Sound and visual

Which type of message is carried by hormones in both animals and plants?

• Chemical messages
• Electrical messages
• Mechanical messages
• Thermal messages

Which type of message is carried along nerves and found only in animals?

• Chemical messages
• Electrical messages
• Mechanical messages
• Thermal messages

How do plants respond to stimuli through special growth processes?

• Tropisms and flowering
• Dormancy and leaf shedding
• Movement and hormone secretion
• All of the above

Which hormone is considered the chief growth hormone of plants?

• Auxin
• Gibberellin
• Cytokinin
• Abscissin

Which region of a plant produces the largest amounts of auxins?

• Shoot tips
• Root tips
• Cambia
• All of the above

Which hormone is responsible for increasing the rate of cell division in plants?

• Auxin
• Gibberellin
• Cytokinin
• Abscissin

Which hormone is generally antagonistic to gibberellins and cytokinins in plants?

• Auxin
• Gibberellin
• Cytokinin
• Abscissin