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B2: Quiz 17 – Answers
B2: Quiz 17 – Answers
1)
a)
i) Food substances/ cell sap (cell sap is a solution that contains sugars, amino acids and other soluble food molecules)
ii) The substances are transported from where they are produced in the leaves to growing tissue (roots or shoots), storage tissue and for the development of seeds
iii) Translocation
b) The phloem cells are joined together with membranes that have perforated ends/ pores in them that let certain substances pass through them
c) Living
2)
a)
i) Water and dissolved mineral ions
ii) The substances go from the roots (then through the stems) and then to the leaves
iii) Transpiration
b) No – there are no membranes between the xylem cells
c) Lignin
d) Non-living
3)
a)
i) Food substances/ cell sap (cell sap is a solution that contains sugars, amino acids and other soluble food molecules)
ii) The substances are transported from where they are produced in the leaves to growing tissue (roots or shoots), storage tissue and for the development of seeds
iii) Translocation
b) The phloem cells are joined together with membranes that have perforated ends/ pores in them that let certain substances pass through them
c) Living
2)
a)
i) Water and dissolved mineral ions
ii) The substances go from the roots (then through the stems) and then to the leaves
iii) Transpiration
b) No – there are no membranes between the xylem cells
c) Lignin
d) Non-living
3)
Questions
1) This question is all about phloem cells/ tubes.
a)
i) What substances are transported through the phloem tubes?
ii) Where do these substances go from and to through the phloem tubes?
iii) What is the name for the process of transporting substances through the phloem tubes?
b) Talk about how one phloem cell is joined to the next phloem cell.
c) Are phloem cells living or non-living?
2) This question is all about xylem cells/ tubes.
a)
i) What substances are transported through the xylem tubes?
ii) Where do these substances go from and to through the xylem tubes?
iii) What is the name for the process of transporting substances through the xylem tubes?
b) Are there any membranes between the xylem cells?
c) What is the name of the substance in xylem cells that makes them strong?
d) Are xylem cells living or non-living?
3) Fill in the gaps in the table below.
1) This question is all about phloem cells/ tubes.
a)
i) What substances are transported through the phloem tubes?
ii) Where do these substances go from and to through the phloem tubes?
iii) What is the name for the process of transporting substances through the phloem tubes?
b) Talk about how one phloem cell is joined to the next phloem cell.
c) Are phloem cells living or non-living?
2) This question is all about xylem cells/ tubes.
a)
i) What substances are transported through the xylem tubes?
ii) Where do these substances go from and to through the xylem tubes?
iii) What is the name for the process of transporting substances through the xylem tubes?
b) Are there any membranes between the xylem cells?
c) What is the name of the substance in xylem cells that makes them strong?
d) Are xylem cells living or non-living?
3) Fill in the gaps in the table below.