Explain how the structures of tracheids and vessel elements are specialized for their conduction of

water and dissolved minerals. What will be an ideal response?


Concepts to Consider: Both cells are dead and hollow, so water can be conducted through them.
Tracheids--tapered cells found in patches; have pits in cell walls that pass water from cell to cell.
Vessel elements--stacked on top of one another like a pipe; perforations in end walls and pits in lateral
walls pass water from vessel element to vessel element.

Biology & Microbiology

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Rubisco has 16 subunits joined together to make a functional unit. Eight of the subunits are large, the other 8 are

small. On which subunit(s) is/are the active sites located?

a. on each of the 8 large subunits

b. on each of the 8 small subunits c. on one of the 8 large subunits d. on one of the 8 small subunits e. on each of the 16 subunits

Biology & Microbiology

The type of plant hormone primarily responsible for inhibiting growth of lateral meristems on shoots and restricting

the formation of branches is/are ____.

a. abscisic acid b. cytokinins c. auxins d. salicylic acid e. gibberellins

Biology & Microbiology

Of the following choices, the best outgroup to use to resolve a phylogeny for great apes would be

a. lemurs. b. butterflies. c. angiosperms. d. slime molds. e. Archaea.

Biology & Microbiology

The biological species

What will be an ideal response?

Biology & Microbiology