Multiple Choice
Which statement best summarizes the adaptive value of xylem?
A) Xylem is specialized for transporting food molecules like sugar.
B) Xylem is the reinforcing protein that in combination with cellulose allows plants to grow vertically.
C) Xylem cells open and close to admit carbon dioxide into the leaf during photosynthesis.
D) Xylem is specialized for transporting water and dissolved nutrients.
Correct Answer:
Verified
Correct Answer:
Verified
Q33: Eukaryotes display the earliest version of sexual
Q34: Some plants rely on nocturnal bats for
Q35: Imagine the discovery of an undescribed nonphotosynthetic
Q37: The single-celled protists are often mobile, moving
Q39: One reason plants can live on land
Q40: Sexual reproduction can be observed in all
Q41: The organism recorded in this 2.1-billion-year-old fossil
Q42: In comparison to other plant groups, the
Q43: A waxy covering known as the _
Q52: The majority of protists are motile,enabling heterotrophic