Question

check your understanding
choose the best word to fill each blank and complete the sentences.
a choose... can be occupied by only choose... species.
a niche includes how organisms use their choose...
habitat

Explanation:

To solve this, we analyze the context of ecological terms:

First Blank (First Sentence):

In ecology, a niche refers to the role an organism plays in its ecosystem, including resources it uses. A habitat is the physical place an organism lives. The first blank’s sentence is about what can be occupied by one species—this is a niche (since a niche is specific to how a species interacts, and typically one species occupies a niche, while habitats can have multiple species).

Second Blank (First Sentence):

The phrase “only ___ species” fits with “one” (since a niche is unique to one species in a given ecosystem, following the competitive exclusion principle: two species cannot occupy the same niche).

Third Blank (Second Sentence):

The sentence “A niche includes how organisms use their ___” refers to resources (like food, space, etc.). The term for what organisms use in their niche is “resources” (though if options include “habitat” or “resources,” “resources” is correct, but given the context, the key is that a niche involves resource use).

Filling the Blanks:

1. First dropdown (A): niche (because a niche is specific to one species’ role).
2. Second dropdown: one (since a niche is occupied by one species).
3. Third dropdown: resources (or the relevant term for what organisms use in their niche; if options include “habitat,” note that “habitat” is the place, while “resources” is how they use the habitat’s components—so “resources” is better, but if options are limited, follow ecological definitions).

(Note: If the second sentence’s dropdown options include “habitat” or “resources,” the correct term for “how organisms use their ___” is “resources” (since a niche describes resource use, while habitat is the place).)

Final answers (matching ecological concepts):

• First blank: niche
• Second blank: one
• Third blank: resources (or the appropriate term from options)

(If the problem’s options are as follows, adjust:

• First dropdown: niche (over habitat, as habitat is the place, niche is the role)
• Second dropdown: one (as per competitive exclusion)
• Third dropdown: resources (or the term for what organisms use in their niche))

Answer:

To solve this, we analyze the context of ecological terms:

First Blank (First Sentence):

In ecology, a niche refers to the role an organism plays in its ecosystem, including resources it uses. A habitat is the physical place an organism lives. The first blank’s sentence is about what can be occupied by one species—this is a niche (since a niche is specific to how a species interacts, and typically one species occupies a niche, while habitats can have multiple species).

Second Blank (First Sentence):

The phrase “only ___ species” fits with “one” (since a niche is unique to one species in a given ecosystem, following the competitive exclusion principle: two species cannot occupy the same niche).

Third Blank (Second Sentence):

The sentence “A niche includes how organisms use their ___” refers to resources (like food, space, etc.). The term for what organisms use in their niche is “resources” (though if options include “habitat” or “resources,” “resources” is correct, but given the context, the key is that a niche involves resource use).

Filling the Blanks:

1. First dropdown (A): niche (because a niche is specific to one species’ role).
2. Second dropdown: one (since a niche is occupied by one species).
3. Third dropdown: resources (or the relevant term for what organisms use in their niche; if options include “habitat,” note that “habitat” is the place, while “resources” is how they use the habitat’s components—so “resources” is better, but if options are limited, follow ecological definitions).

(Note: If the second sentence’s dropdown options include “habitat” or “resources,” the correct term for “how organisms use their ___” is “resources” (since a niche describes resource use, while habitat is the place).)

Final answers (matching ecological concepts):

• First blank: niche
• Second blank: one
• Third blank: resources (or the appropriate term from options)

(If the problem’s options are as follows, adjust:

• First dropdown: niche (over habitat, as habitat is the place, niche is the role)
• Second dropdown: one (as per competitive exclusion)
• Third dropdown: resources (or the term for what organisms use in their niche))