Transport in Plants
Xylem & Phloem
, Understandings:
B3.1.7 - Adaptations for gas exchange in leaves
B3.1.8 - Distribution of tissues in a leaf.
B3.1.9 - Transpiration as a consequence of gas exchange
B3.2.7 - Transport of water from roots to leaves during transpiration
B3.2.8 - Adaptations of xylem vessels for transport of water
B3.2.9 - Distribution of tissues in a transverse section of the stem of
a dicotyledonous plant (AOS)
B3.2.10 - Distribution of tissues in a transverse section of the root of
a dicotyledonous plant (AOS)
B3.2.17 - Generation of root pressure in xylem vessels by active
transport of mineral ions
B3.2.18 - Adaptations of phloem sieve tubes and companion cells for
translocation of sap
, REVIEW
1. Define cohesion and adhesion.
2. Define active and passive transport.
3. Define osmosis.
4. Write the formula for photosynthesis.
5. DO YOU KNOW: What are phloem and xylem?
, Adaptations for Gas Exchange in Leaves
● Chloroplasts need a supply of carbon dioxide for
photosynthesis.
● Oxygen produced during photosynthesis is released.
● A large moist surface is required for exchange of
carbon dioxide and oxygen.
○ This is provided by the leaves.
Xylem & Phloem
, Understandings:
B3.1.7 - Adaptations for gas exchange in leaves
B3.1.8 - Distribution of tissues in a leaf.
B3.1.9 - Transpiration as a consequence of gas exchange
B3.2.7 - Transport of water from roots to leaves during transpiration
B3.2.8 - Adaptations of xylem vessels for transport of water
B3.2.9 - Distribution of tissues in a transverse section of the stem of
a dicotyledonous plant (AOS)
B3.2.10 - Distribution of tissues in a transverse section of the root of
a dicotyledonous plant (AOS)
B3.2.17 - Generation of root pressure in xylem vessels by active
transport of mineral ions
B3.2.18 - Adaptations of phloem sieve tubes and companion cells for
translocation of sap
, REVIEW
1. Define cohesion and adhesion.
2. Define active and passive transport.
3. Define osmosis.
4. Write the formula for photosynthesis.
5. DO YOU KNOW: What are phloem and xylem?
, Adaptations for Gas Exchange in Leaves
● Chloroplasts need a supply of carbon dioxide for
photosynthesis.
● Oxygen produced during photosynthesis is released.
● A large moist surface is required for exchange of
carbon dioxide and oxygen.
○ This is provided by the leaves.
