This phylum of nonvascular plants has about 6000 known living species. It includes the genus
Marchantia, whose members can reproduce asexually via cups called gemmae.
a. Hepatophyta
b. Pterophyta
c. Bryophyta
d. Lycophyta
e. Anthocerophyta
A
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An allele that is present but unexpressed is
A. codominant. B. dominant. C. pleiotropic. D. epistatic. E. recessive.
The simplest nervous system found in nature is the nerve net. An example of an organism that senses and responds to its environment with this ancient system would be
A. a jellyfish. B. a cockroach. C. an earthworm. D. a frog. E. a fiddler crab.
Caenorhabditis elegans is a favorite for genetic
studies because of all of the following EXCEPT a. it has the same tissue types as larger animals. b. it is transparent. c. it has only 959 cells. d. it reproduces quickly. e. they can be cut in half and used in experiments.
Which of the following groups anchors proteins to the outer surface of the plasma membrane?
a. Myristate b. Farnesyl c. Palmitate d. Glycolipid