IB biology SL transport

Which of the following are responsible for transpiration?
I. adhesion
II. cohesion
III. evaporation
IV. active transport

• I and II only
• I, II and III only
• I, and III only
• I, II, III and IV

Which factor will decrease the rate of transpiration?

• Wind
• Temperature
• Light intensity
• Humidity

Tags

NGSS.MS-LS1-5

What hormone is responsible for the closing of stomata?

• Abscisic Acid
• GA (Gibberellin)
• Auxin
• Phytochrome

What is a halophyte?

• Aquatic dwelling Plant
• Arid dwelling Plant
• Salt dwelling plant
• Air dwelling plant

Tags

NGSS.MS-LS1-5

Which of the following is an adaptation of a xerophyte?

• reduced roots
• hairy leaves
• many stomata
• thin cuticle

Tags

NGSS.HS-LS4-4

Which of the following play a role in stomata closing?

• K+ pumped out of guard cell; low levels of Abscisic Acid
• K+ is pumped out of guard cells; high levels of Abscisic Acid
• K+ is pumped into guard cells; low levels of Abscisic Acid
• K+ is pumped into guard cells; high levels of Abscisic Acid

How do minerals enter into plant cells?
I. Active transport
II. Bulk flow (with water)
III. Transport by Phloem

• I only
• I and II only
• I, II and III
• II and III only

Tags

NGSS.MS-LS1-2

What BEST defines adhesion.

• Water molecules bonding to each other due to the hydrophobic nature of water.
• Water molecules bonded to other other surfaces due to the transparency of water.
• Water molecules sticking to each other due to the polarity of water.
• Water molecules sticking to other surfaces due to the polarity of water.

Why do plants need to open stomata?
I. To get rid of excess CO₂

II. To allow transpiration
III. To exchange gases with the  environment

• I only
• I and II only
• II and III only
• I, II and III

Which of the following are true of xylem vessels?

I. They have no end walls

II. They have pores (pits) in the outer cell wall

III. They contain lignin

• I and II only

• I and III only

• II and III only

• I, II and III