Unformatted text preview: 12) What is the role of proton pumps in root hair cells? ‘ A) eliminate excess electrons
V (ﬁqacquire minerals from the soil
C) establish ATP gradients
D) pressurize xylem transport
E) A and D only 13) What is the main force by which most of the water within xylem vessels moves toward the top of a tree?
A) active transport of ions into the stale
B) atmospheric pressure on roots
C) osmosis in the root
D) the force of root pressure
@evaporation of water through stoma 14) Phloem transport of sucrose can be described as going from "source to sink." Which of the following would not
normally function as a sink? A) shoot tip
B) growing leaf C) storage organ in summer D growing root
ature leaf 15) The general functions of the nervous system include which of the following?
1. integration V 11. motor output
Ill. sensory input
A) i only B) ll only C) lll only D) l and ll only , ll, and ill 16) Which of the following is true in plants?
A) The gametophyte is the dominant generation in ﬂowering plants.
B) Meiosis occurs in gametophytes to produce gametes.
C) Plants can live independently as either sporophytes or gametophytes.
D) Male gametophytes and female gametophytes have the same structure.
@Meiosis occurs in sporophytes to produce spores. 17) Which of the following is the correct order of ﬂoral organs from the outside to the inside of a complete ﬂowur?
A) male gametophy‘te-female gametophyte—sepals-petals
D) sporeSegametes-zygote-embryo E) petals—sepals-stamens-carpels ...
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- Spring '10