Reproductive Strategies and Survival Odds
Written by Adi Ackerman, Head Teacher
"Reproductive Strategies and Survival Odds" is written for 7th Grade (Ages 12-13), and it covers NGSS MS-LS1-4. A 6th grader who is already steady on living things can use it too, and an older student can use it as a short review.
2 pages in this set
7th grade science worksheet: compare cod, turtles, penguins and elephants on number of offspring and parental care. Answer key included. Part of our reproduction and plant growth living things collection. Aligned to NGSS standards.
How do I use this worksheet?
Use the strategies sheet to open a unit on reproduction. Use the growth sheet for genes and environment, and the modes sheet for review.
What students will practice
- Students will compare how many offspring cod, sea turtles, penguins and elephants produce.
- Students will compare how much care each parent gives its young.
- Students will explain how each strategy gives a species a chance to survive.
Curriculum Links
Next Generation Science Standards
Science · 7th Grade
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Browse the grade, subject, and topic this belongs to.
FAQ
How do I use this reproduction and plant growth worksheet?
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Use the strategies sheet to open a unit on reproduction. Use the growth sheet for genes and environment, and the modes sheet for review.
What does this worksheet teach?
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Compare cod, turtles, penguins and elephants on number of offspring and parental care. The directions on the page read: Read the text and study the table. Then answer the questions on page 2. An answer key is included.
Can I use this reproduction and plant growth worksheet for homeschool or classroom?
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Yes, both. We made it for 7th grade living things, and it works the same at home or at school. At home, a student can work through it alone and then go over it with you, which shows quickly what is solid and what needs another look. In class it works as independent practice, homework or a warm-up, and you can print one copy or a full set.
Why do some animals have many offspring and others few?
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An organism has only so much energy and time. A cod releases millions of eggs and leaves, while a penguin or elephant cares for few young.
What is the difference between one parent and two parent reproduction?
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With one parent offspring usually have the same DNA. With two parents DNA is mixed, so offspring vary.
Can the environment change a trait?
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Yes. Genes set a range, and light, water, food and temperature can move an organism up or down within it.
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Worksheet Details
| Grade | 7th Grade |
| Subject | Science |
| Topic | Living Things |
| Standard | MS-LS1-4 |
| Pages | 2 pages |
| Difficulty | Medium |
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