Cell division in the apical meristems at the tips of a plant that results in increases in height or length is called
A. mitotic growth.
B. secondary growth.
C. primary growth.
D. herbaceous growth.
E. vascular cambium growth.
Answer: C
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The movement of water across a membrane from an area of lower solute concentration to a region of higher solute concentration is called ____.
a. osmosis b. active transport c. endocytosis d. both diffusion and osmosis e. both osmosis and active transport
When molecules diffuse, they move ________
a. down their own concentration gradient unless there are other molecules also diffusing in the vicinity b. up their own concentration gradient unless there are other molecules also diffusing in the vicinity c. up their own concentration gradient without regard to the gradients of other molecules d. down their own concentration gradient without regard to the gradients of other molecules
If its cells are striated and fused at the ends so that the cells contract as a unit, the tissue is:
a. smooth muscle b. dense fibrous connective c. supportive connective d. cardiac muscle e. skeletal muscle