Question 44 pts
Typically species richness of a community is greatest between physical disturbance of ____________ intensity or frequency.
Group of answer choices
low
intermediate
high
variable
Question 54 pts
Species unique to an area are:
Group of answer choices
insolent
imperiled
endemic
sympatric
Question 64 pts
Ladybugs are effective natural control agents against pest insects, but as gardeners soon find out, ladybugs do not reduce pest populations to zero because
Group of answer choices
they can't fly to find pests on nearby plants.
of their very selective feeding habits.
to do so jeopardizes their own existence.
they don't live long enough.
ladybug's mates, manbugs, are incompetent predators and render the species ineffective.
Question 44:
high
greater the disturbance, greater is the species richness. Once the disturbance is removed, species richness decreases due to increased competition.
Question 54:
Species unique to an area is termed endemic species
Question 64:
Ladybirds feed voraciously. In case there is a shortage of food, they feed on each other, thus jeopardising their own existence.
Question 44 pts Typically species richness of a community is greatest between physical disturbance of ____________...
Question 194 pts A species mimics the appearance of a species that has a defense the mimic lacks. This is an example of _______________ mimicry. Group of answer choices Mullerian Dohertian Batesian Darwinian Question 204 pts Many introduced species have deleterious effects on ecosystems because Group of answer choices coevolved parasites and competitors are absent. the introduced species are long-lived. predators prefer the introduced species, and the local prey therefore proliferate to dangerously high levels. the communities from which they...