The onset of the growth of a plant embryo, termed ____, starts when the seed begins to soak up water
a. imbibition
b. hatching
c. splitting
d. germination
e. gestation
ANSWER: d
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Which of the following statements about protists is false? a. Protists constitute a monophyletic group
b. Some protists are more closely related to plants, fungi, or animals than to other protists. c. Some protists are multicellular and have differentiated cells. d. Certain protists can function both as autotrophs and heterotrophs.
After DNA replication, each chromosome
contains
a. two sister chromatids. b. two sister chromatins. c. two sister chromosomes. d. two sister centromeres. e. two sister centrioles
Most of the carbon now present in the earth's
atmosphere will eventually end up in what two reservoirs? a. plants and animals b. plants and decomposers c. plants and soil d. plants and oceans e. plants and fossil fuels
Which of these statements is true about the gametophyte tissue that surrounds the pine embryo?
a) It functions as a diploid food reserve. b) It develops from the fusion of a microspore and a megaspore. c) It functions as a haploid food reserve. d) It functions as a triploid food reserve. e) It is the remnant of the pollen tube.