Angiosperms have two types of xylem tubes,each composed of one cell type,either ____ or ____.
A) vessel elements; companion cells
B) sieve elements; companion cells
C) sieve elements; tracheids
D) vessel elements; sieve elements
E) vessel elements; tracheids

Question

Angiosperms have two types of xylem tubes,each composed of one cell type,either ____ or ____.  
A) vessel elements; companion cells
B) sieve elements; companion cells
C) sieve elements; tracheids
D) vessel elements; sieve elements
E) vessel elements; tracheids

Quizplus · Accepted Answer

Angiosperms have two types of xylem tubes, vessel elements and tracheids. Each type is composed of one cell type, either vessel elements or tracheids.

Angiosperms Have Two Types of Xylem Tubes,each Composed of One