Which is an example of temporal isolation?

Question

A.  one plant species blooms in June-July and a second plant species blooms in August-September.
B.  one plant species is pollinated by bees and a second plant species is pollinated by moths.
C.  two plant species live on the same mountainside, but one lives on rocky outcrops and the other in open meadows.
D.  two plant species have incompatible gametes.

Clarify Question
· What is the key concept addressed by the question?
· What type of thinking is required?
 
Gather Content
· What do you already know about temporal isolation?
 
Choose Answer
· Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer?
 
Reflect on Process
· Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?

Answer 1

A.  one plant species blooms in June-July and a second plant species blooms in August-September.

Clarify Question
· What is the key concept addressed by the question?
        o This question addresses temporal isolation.
· What type of thinking is required?
        o This question is asking you to take what you already know and apply it to this unfamiliar situation.
 
Gather Content
· What do you already know about temporal isolation?
        o Populations are considered to be different species when the members are reproductively isolated from each other.
        o Reproductive isolating mechanisms prevent genetic exchange between species. Some prevent the formation of zygotes – prezygotic isolating mechanisms. Others prevent the proper functioning of zygotes after they form – postzygotic isolating mechanisms.
        o Prezygotic isolating mechanisms include ecological isolation, behavioral isolation, temporal isolation, mechanical isolation, and prevention of gamete fusion.
        o Temporal isolation is when species reproduce in different seasons.
 
Choose Answer
· Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer?
        o Temporal refers to time. Think of the words “temporary”, “tempo”, or “contemporaneous”.
        o The example in which the plants are isolated by time is the pair of plant species that bloom during different months.
 
Reflect on Process
· Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
        o The question required you to take what you already know and apply it to this unfamiliar situation.
        o Did you recognize that plants blooming during different months is an example of temporal isolation?