Which factor is the most important algal contribution to the fungal component of a lichen?
a. improved water conservation
b. mechanical protection
c. photosynthetically derived food
d. conversion of nitrogen gas to nitrates
e. pigment for camouflage
ANSWER: c
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Why is the development of bipedalism considered to be a major advancement in human evolution?
What will be an ideal response?
As many bacterial molecular sequences evolve quickly and/or continuously, creating a bacterial phylogenetic tree based on molecular sequences can be difficult
A. true B. false
What is the concept illustrated by the experiment in the accompanying figure?
a. Protein is not the encoding material. b. Protein cannot enter the host cell. c. Protein renatures due to radiation. d. Protein is composed of subunits with phosphate. e. Protein is composed of subunits with sulfur.
A term which applies to most trees which lose only a few leaves at a time is
A. deciduous. B. carnivorous. C. maple. D. hickory. E. coniferous.