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I understand competitive exclusion but wouldn’t the same logic extend to the animals of the same species if we’re going to take competitive exclusion to this extreme?

im studying for my upcoming test and these are some sample questions my teacher posted, i need help with most of the questions and help for any of them is appreciated , i need to know the reason why they are either true/false too.
please help
Answer True or False
2a) The fundamental niche will always be larger than the realized niche in herbivores that are frequently attacked by predators.
2b) Rare individuals perform best under negative frequency dependent selection.
2c) Sex role reversals should be most common where sons are cheaper to produce and easier to rear
than daughters.
2d) Honest signals should be most often associated with high costs of production.
2e) Competitive exclusion is an extreme form of niche reduction. ____________________________________
2f) Sexual selection is a special form of natural selection that deals sexual reproduction i.e. selection to produce sexually to increase genetic variance.
2g) The higher the variance in quality among egglaying sites, the more pronounced the fighting characters in male salmon.
2h) In bamboo, plants that reproduce out of synch with the other members of the population will accrue high reproductive fitness.
2i) Ecosystems are defined by the unique biological communities that they harbor.
2j) Trait mediated effects can cause change in realized replacement rates.
2k) Replacement rate values of 1.0 are impossible to achieve when death rates exceed 0.5.
2l) Habitat fragmentation leads to decoupling of population dynamics among sub-populations.
2m) Inbreeding depression is most commonly observed in human females who suffer from morning

There are several different species of anole lizards in the Caribbean. All of them like to eat insects. How do these species reduce competition?
Nothing — it is impossible to reduce competition between species that need the same resources.
One species has developed a bigger brain and faster speed, and it is outcompeting all the other species, which are going extinct.
Some search for bugs at the top of the trees, some hunt on tree trunks, and some forage on the ground.
Question 24 1 points Save
The sum total of all of the ways that an organism uses the resources of its environment is called the species _____.
fecundity
niche
habitat
cohort
Question 25 1 points Save
When two species have made long-term adjustments to adapt to characteristics that affect each other, this is called _____.
r-selection
co-evolution
a density-independent effect
competitive exclusion
An animal with cryptic (camouflage) coloration is trying to _____.
hide from predators
warn predators that the organism is poisonous
attract a mate
develop a commensalistic relationship with another species

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