Other Terms

Question 1

What do angiosperms have?

Answer 1

have vessel elements & tracheids to carry water

Question 2

What does Gymnosperms?

Answer 2

only have tracheids

Question 3

What does Gymnosperm wood have?

Answer 3

tracheids. Pits (exposed areas of 1° wall) allow water movement, but ends aren’t “open.”

Question 4

What does Angiosperm wood?

Answer 4

2 broadest, “open” ended cells are vessels. (Vessels have only thin, 1° walls at the ends.)

Question 5

What is cavitation?

Answer 5

If cohesive forces are interrupted (the water column breaks, forming ‘bubbles’ in the xylem - cavitation), water flow may stop. Cavitated cells may never again useable for transport

Question 6

Differences between tropical plants and winter plants based on vessel elements

Answer 6

Tropical plants often have wide xylem cells. Temperate plants often have narrow ones

Question 7

What are 2 Adaptations for Water Conservation

Answer 7

Reduce surface area  reduce water loss ex. needles.Slow airflow  slow evaporation. ex. stomata in grooves or pores

Question 8

What are 4 adaptations to the tropics?

Answer 8

Dense tropical forests  shade. Large leaves  more light. Red undersides reflect usable light back into leaf.Drip tips  funnel off excess water