Question

Adaptive Traits Worksheet

Part 1: Multiple Choice
Highlight the correct answer

1. What is an adaptive trait?

A) A characteristic that helps an organism survive and reproduce successfully

B) A trait that only animals have

C) A physical feature that changes during an organism's lifetime

D) A behavior that all organisms share

2. Which of the following is a behavioral adaptive trait?

A) A peacock's colorful tail feathers

B) A bird building a nest

C) A flower's bright petals

D) A seed's hard shell

3. How do bright flowers help plants reproduce?

A) They protect seeds from predators

B) They attract insects and birds that transfer pollen

C) They store water for the plant

D) They help roots absorb nutrients

4. What is one way that animals help plants reproduce?

A) By eating all the leaves

B) By transferring pollen and dispersing seeds

C) By blocking sunlight

D) By preventing soil from forming

5. Which environmental factor is MOST important for plant growth?

A) The color of the soil

B) The age of the plant

C) Water availability and sunlight

D) The number of insects nearby

**6. Why might a fish grow larger in a big pond than in a small tank?**

A) The fish's genetics change in bigger spaces

B) The bigger pond has more space and resources available

C) Fish cannot grow in tanks

D) The water is warmer in ponds

7. What does genetic information determine?

A) How much water a plant needs

B) An organism's growth potential

C) The color of the soil

D) How many offspring an animal will have

Part 2: Short Answer

8. Describe one structural adaptive trait that helps animals reproduce. Explain why this trait is helpful.

____________________________________________________________________________

____________________________________________________________________________

9. Name two environmental factors that influence how fast a plant grows.

____________________________________________________________________________

____________________________________________________________________________

10. How do squirrels help plant reproduction even though they are not trying to?

____________________________________________________________________________

____________________________________________________________________________

11. Explain why two plants of different varieties might grow at different rates even if they receive the same amount of water, sunlight, and soil nutrients.

____________________________________________________________________________

____________________________________________________________________________

Part 3: Scenario-Based Questions

12. A farmer plants two fields of corn. Field A receives plenty of water and fertilizer. Field B receives very little water and no fertilizer. Both fields contain the same corn seed variety. After three months, the corn in Field A is much taller than the corn in Field B.

A) Which factor had the bigger effect on growth: environment or genetics? Explain your reasoning.

____________________________________________________________________________

____________________________________________________________________________

B) Could the corn in Field B eventually grow as tall as the corn in Field A if given better conditions? Why or why not?

____________________________________________________________________________

____________________________________________________________________________

13. A male bird has bright, colorful feathers and sings loudly every morning. A female bird has dull, brown feathers and is mostly silent.

A) How might the male bird's traits help it reproduce?

____________________________________________________________________________

____________________________________________________________________________

B) Why might the female bird's dull coloring be an adaptive trait?

____________________________________________________________________________

____________________________________________________________________________

14. Two identical ponds contain the same species of fish. Pond 1 is large with plenty of food. Pond 2 is small with limited food. After one year, the fish in Pond 1 are noticeably larger than the fish in Pond 2.

A) Identify one environmental factor that caused the difference in fish size.

____________________________________________________________________________

B) Could genetics also play a role in the size difference? Explain.

____________________________________________________________________________

____________________________________________________________________________

Answer 1

Part 1: Multiple Choice — correct answers
1. A
2. B
3. B
4. B
5. C
6. B
7. B

Part 2: Short Answer
8. Example: A male peacock’s large, colorful tail feathers. Why helpful: The bright tail attracts females and signals the male’s health, increasing his chances of being chosen as a mate.

9. Two environmental factors: water availability and sunlight (also soil nutrients, temperature, and space).

10. Squirrels bury nuts and seeds for later use and often forget some of them. The forgotten buried seeds can germinate and grow into new plants, helping with seed dispersal and plant reproduction.

11. Different varieties have different genetics that set their growth rates and maximum sizes. Even with the same environment, one variety may have genes that make it grow faster or allocate resources differently, so they reach different sizes or grow at different speeds.

Part 3: Scenario-Based Questions
12A. Environment had the bigger effect. Reason: Both fields used the same seed variety (same genetics), so the large differences in water and fertilizer caused the growth difference.

12B. Yes — if the corn in Field B is alive and not irreversibly stunted, giving it better water and nutrients should allow it to grow taller and closer to the height of Field A, because the genetic potential is the same. (Note: severe or prolonged stress, disease, or timing/seasonal limits can reduce the ability to fully catch up.)

13A. The male’s bright feathers and loud song help attract females by signaling health, vigor, or good genes, increasing his chances of mating.

13B. The female’s dull coloring is likely adaptive for camouflage, helping her avoid predators while nesting and protecting eggs or young, which increases reproductive success.

14A. One environmental factor: food availability (also pond size/space and population density).

14B. Yes, genetics could also play a role: different genetic makeup can set different growth potentials and metabolic rates, so even in similar conditions some fish may grow larger. However, in this scenario the primary cause is likely environmental (food and space).