An organism that is made up of a fungus and an associated green alga or cyanobacterium is known as a
a. sac fungus.
b. lichen.
c. mycorrhizal root.
d. club fungus.
c
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The scientist(s) given credit for formulating the "cell theory" is/are
A. Rudolf Virchow. B. Mathias Schleiden and Theodore Schwann. C. Robert Hooke. D. Louis Pasteur. E. Antony van Leeuwenhoek.
In prokaryotes, the daughter cells produced by prokaryotic fission
A) are, with the exception of random mutations, genetically identical to the parent cell. B) can reproduce either by prokaryotic fission or by the production of gametes. C) contain half the DNA of the original parent cell. D) cannot replicate themselves.
Compared to wetland mammals, water conservation in mammals of arid regions is enhanced by having more _____
A) juxtamedullary nephrons B) urinary bladders C) ureters D) podocytes
The immotile sperm develop motility in about 18 hours after arriving at the long, coiled tube called what?
A. Testis B. Vas deferens C. Semiferous tubules D. Epididymis