Topic 9 : Plant Anatomy Test (IB BioY1)

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

What is a halophyte?

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

Which of the following is an adaptation of a xerophyte?

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

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

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 transported in phloem - and by what process?

• Sucrose, amino acids, minerals - actively by translocation
• Sucrose, carbonic acids, hormones - actively by transpiration
• Sucrose, amino acids, hormones - actively by translocation
• Sucrose, amino acids, hormones - passively by translocation

Which part of the aphid will reach into which structure in the plant?

• tail piece; phloem
• stylet; xylem
• tail piect; pith
• stylet; phloem

What is the main explanation for the fact that water can cause hydrostatic pressure?

• Because it is incompressible.
• Because it is polar.
• Because it attracts other water molecules.
• Because it exhibits electronegativity.