Affiliate Marketing Secrets

Question 6
The many amazing chemicals produced by plants and animals, that humans have found uses for as medicines, were produced by these organisms as _____.
for no good reason that anyone can find
helpful aids to human health
defenses against competitors or predators
Question 7
When a food supply is subdivided to create two different realized niches, this is an example of _____.
symbiosis
competitive exclusion
a density-independent effect
resource partitioning
8
Competition is _____.
good for both the winner and loser
deterimental to both species involved
bad for the loser but good for the winner
Question 9
Which relationship is sometimes considered a special type of predation where the predator typically does not kill its victim?
competition
commensalism
parasitism
mutualism
Question 10
When an organism kills another organism in order to gain a food supply, the organism doing the eating is called a _____.
host
predator
parasite
prey
Question 11
When predators are removed from an ecosystem, what is the typical result?
biodiversity in prey species increases
there is no significant change
biodiversity in prey species decreases
Question 12
A predictable and orderly change in an ecosystem, where one community is replaced by another that is more complex, is called _____.
succession
commensalism
competitive exclusion
endosymbiosis
Question 13
Some ants are “aphid ranchers”. The ants feed on the aphid’s sugary excretions, and the ants will carry the aphids to new plants so that the aphids always have a food supply. This is an example of a _____.
commensalism
predation
parasitism
mutualism

i am reading in class ix of a CBSE affiliated school.