Question

Label the following as either features of xylem or phloem:1. Functions in transpiration 2. Cells are hollow3. Conducts animo acida4. Conducts water5. Sieve tube members6. Conducts carbohydrates7. Tracheids8. Living at maturity9. Vessel elements10. Cells are dead at maturity11. Sieve cells12. Comprises wood13. Companion cells

Answer 1

Xylem is a vascular tissue that transports water and minerals. It is composed of tracheids, vessel elements, and xylem parenchyma.

Features of xylem:

• conducts water ,(4)

,

• tracheids & vessel elements = both are hollow and elongated cells. ,(2,7,9)

,

• Dead at maturity, ,(10)

,

• Functions in transpiration, ,(1)

,

• Comprises wood ,(12)

Phloem is a vascular tissue that transports organic compounds like glucose from the site of photosynthesis to other parts of the plant. It is composed of sieve cells, companion cells, phloem parenchyma, and phloem fibers.

Features of phloem:

• Conducts carbohydrates and amino acids ,(3,6)

,

• Sieve tube members, sieve cells, companion cells = Connected as hollow tubes ,(2,5,11,13)

,

• Living at maturity ,(8)