Newsela Formative
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Last updated about 2 years ago
4 questions
1
Why did the author use categories of reproductive isolation to organize the article?
Why did the author use categories of reproductive isolation to organize the article?
1
Which of the following are reproductive isolating mechanisms (RIMs) that keep different species from reproducing with one another?
1. They are separated by physical or geographic distance.
2. They live and breed in separate and distinct habitats.
3. They flower or mate at different times of the day or year.
4. They have sex organs or gametes that are incompatible.
Which of the following are reproductive isolating mechanisms (RIMs) that keep different species from reproducing with one another?
1. They are separated by physical or geographic distance.
2. They live and breed in separate and distinct habitats.
3. They flower or mate at different times of the day or year.
4. They have sex organs or gametes that are incompatible.
1
Read the selection from the introduction [paragraphs 1-3].
So, natural selection favors different characteristics in different situations. These differences accumulate and eventually yield different species.
What is the meaning of "yield" as it is used in the sentence above?
Read the selection from the introduction [paragraphs 1-3].
So, natural selection favors different characteristics in different situations. These differences accumulate and eventually yield different species.
What is the meaning of "yield" as it is used in the sentence above?
1
Read the paragraph from the section "Temporal Isolation."
In most animal species, members of the two sexes must first search for each other and come together. Complex courtship rituals then take place, often with the male initiating action, and the female responding. This in turn generates further actions until there is sexual intercourse. These elaborate rituals are specific to a species and play a significant part in species recognition. If the order of events in the search-courting-mating process is broken by either of the two sexes, then the entire process will be interrupted. This is known as behavioral isolation.
Which phrases from the paragraph help explain what "courtship rituals" means?
Read the paragraph from the section "Temporal Isolation."
In most animal species, members of the two sexes must first search for each other and come together. Complex courtship rituals then take place, often with the male initiating action, and the female responding. This in turn generates further actions until there is sexual intercourse. These elaborate rituals are specific to a species and play a significant part in species recognition. If the order of events in the search-courting-mating process is broken by either of the two sexes, then the entire process will be interrupted. This is known as behavioral isolation.
Which phrases from the paragraph help explain what "courtship rituals" means?