Solutions
A countercurrent heat exchanger enables an animal to _____.
Correct Answers reduce the loss of body heat to the
environment
A fruit is most commonly Correct Answers A mature ovary.
A land snail, a clam, and an octopus all share Correct Answers
a mantle
A paramecium is a(n) _____. Correct Answers Ciliate
A relatively long cecum is a characteristic of animals that are
_____. Correct Answers Herbivores
According to the principle of competitive exclusion, two species
cannot continue to occupy the same ______. Correct Answers
Ecological niche
According to the punctuated equilibria model, Correct Answers
Most new species accumulate their unique features relatively
rapidly as they come into existence, then change little for the
rest of their duration as a species.
Adaptive radiations can be a direct consequence of four of the
following five factors. SELECT THE EXCEPTION.
- evolutionary innovation
,-an adaptive radiation in a group of organisms (such as plants)
that another group uses as food
-genetic drift
-colonization of an isolated region that contains suitable habitat
and few competitor species
-vacant ecological niches Correct Answers Genetic drift
After surgical removal of an infected gallbladder, a person must
be especially careful to restrict dietary intake of Correct
Answers Fat
All fungi share which of the following characteristics? Correct
Answers Heterotrophic
All of the organisms classified as _____ move and feed using
cilia. Correct Answers Ciliates
Almost all of the members of this phylum form arbuscular
mycorrhizae in a mutualistic partnership with plants. Correct
Answers Glomeromycota
An important example of interaction between fungi and certain
other organisms is mycorrhizae, in which the fungal partners
_____. Correct Answers help plants take up nutrients and water
An important trend in animal evolution was cephalization. An
animal is said to show cephalization when it _____. Correct
Answers has an aggregation of sensory neurons at the anterior
end
, An organism's "trophic level" refers to _____. Correct Answers
Its food source
Animals that possess homologous structures probably _____.
Correct Answers Evolved from the same ancestor
Approximately what percentage of the energy in the caterpillar's
food is actually used for secondary production (growth)?
Correct Answers 17%
33 J/200 J = 0.165 = 16.5%
Arrange the following in order from largest to smallest.
1. ascospore
2. ascocarp
3. ascomycete
4. ascus Correct Answers ascomycete → ascocarp → ascus →
ascospore
(3 → 2 → 4 → 1 )
Arteries carry blood ______. Correct Answers Away from the
heart
Bacteria that live around deep-sea, hot-water vents obtain
energy by oxidizing inorganic hydrogen sulfide belched out by
the vents. They use this energy to build organic molecules from
carbon obtained from the carbon dioxide in seawater. These
bacteria are _____. Correct Answers Chemoautotrophs
Based on the phylogenetic tree in Figure 28.2 in your textbook,
which of the following statements is correct? Correct Answers