9.2 IB Biology Quiz

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

Which cells are alive but lack organelles?

• Xylem cells
• Tracheid cells
• Companion cells
• Sieve tube cells

Why must radioactive CO2 be used when tracing phloem flow?

• It is incorporated into the phloem cells
• It is incorporated into the minerals in the phloem
• It is incorporated into the sucrose during cellular respiration
• It is incorporated into the sucrose during photosynthesis

Tags

NGSS.HS-LS2-3

NGSS.HS-LS2-5

The image shows part of a section through the stem of a non-woody plant. Where does transport of sucrose occur?

• A

• B

• C

• D

The image shows part of a section through the stem of a non-woody plant. Which feature distinguishes the transport of materials in the tissue labelled I from that in the tissue labelled II?

• A. In II, active transport is used.

• B. In II, products of photosynthesis are transported.

• C. In I, movement of materials is the result of transpiration.

• D. In I, there is a higher solute concentration.

Tags

NGSS.HS-LS2-3

In a plant, what tissue(s) is/are specially adapted to transport sucrose?

• A

• B

• C

• D

Which letter identifies phloem?

• A

• B

• C

• D

The diagram shows the longitudinal section of phloem tissue at a plant source. What is a function of the structures labelled X?

• A. To provide the companion cell with carbon dioxide

• B. To provide the companion cell with glucose

• C. To allow movement of sucrose into the sieve tube

• D. To allow movement of starch into the sieve tube

What is the function of sinks?

• regulating the volume transported by the phloem

• Moral support for the phloem

• Storing molecules transported by the phloem

• Extracting molecules from the phloem for glycogen production