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Reproductive Success in Nature
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Reproductive Success in Nature
Choose the best answer for each question. For the select-all question, mark every correct choice. Use evidence and scientific reasoning in your written responses.
Reproductive Strategies
1.Which animal behavior most directly helps an individual attract a mate?
- A bird builds a nest before eggs are laid.
- A male bird performs a colorful display and sings.
- A mammal sheds its winter coat.
- A herd moves to a warmer region.
2.Which flower feature is most likely to attract insect pollinators?
- Large, brightly colored petals with a noticeable scent
- A thick trunk and rough bark
- Long roots that reach deep underground
- Small flowers that produce no nectar
3.Select all the strategies that can improve the survival of offspring or the chance of successful reproduction.
- Parents guard their young from predators.
- A species breeds when food is abundant.
- An animal wanders randomly without seeking food or mates.
- A parent brings food to its young.
4.In a frog population, males with louder calls attracted mates in 7 of 10 observations, while quieter males attracted mates in 3 of 10. Which trait is most likely favored by sexual selection?
- A louder call
- A longer tail
- Earlier hibernation
- A shorter life span
Evidence and Explanation
5.Describe how a flower’s shape can suit a pollinator, such as a hummingbird or moth, and explain how this match can help the plant reproduce.
6.Researchers found that 80% of mottled moths survived long enough to reproduce on tree bark, compared with 35% of pale moths. Which coloration is favored by natural selection in this setting? Use the data to support your answer.
7.Draw and label an animal behavior that helps young survive. Add a label stating one direct benefit the young receive.
8.Complete the statement: A characteristic or behavior that helps an organism survive or reproduce in its environment is an . Give one specific example.
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