Can a Tomato Be Cube-Shaped?
A cube-shaped tomato serves as the entry point for a GMO nature study topic in the No Sweat Nature Study Podcast. Mrs. Cindy explains how tomatoes grow, why they are usually round, and what influences the shapes fruits develop as they grow on the vine.
Building on that idea, the episode explains why tomatoes do not naturally grow into cube shapes and how people have influenced plant traits over time by choosing which seeds to plant again. From the tomato question, the episode moves into how seed-saving and selective breeding can change plants over many years.
GMO Nature Study Podcast Comprehension Questions
Use these questions to check your child’s understanding after listening. They can be answered directly from what was shared in the podcast.
- What shape do tomatoes usually grow into, and why do they grow that way? (They usually grow round because of how their cells develop as the fruit grows on the vine.)
- Why would you not expect to see a cube-shaped tomato growing naturally in a garden? (Because tomatoes do not naturally form flat sides or sharp corners as they grow.)
- Have scientists or gardeners ever found a tomato that naturally grows into a perfect cube? (No, there are no known tomato varieties that grow into true cube shapes on their own.)
- What is one method people have used to make tomatoes appear cube-shaped? (They have grown tomatoes inside cube-shaped molds.)
- What is selective breeding, as explained in the episode? (It is when people save seeds from plants with traits they like and grow those seeds again.)
- What are some plant traits people might choose when saving seeds? (Traits like size, shape, color, or flavor.)
- How long have humans been selecting traits in plants? (People have been doing this for thousands of years.)
- What is DNA, according to the episode? (DNA is the set of instructions inside living things that helps them grow and function.)
GMO Nature Study Video Class
The companion No Sweat Nature Study video class helps students understand what GMOs are by looking at how people have worked with plants over time, from saving seeds to using modern science tools. Students examine plant traits, DNA, and human influence in a way that connects science, history, and everyday food, without any controversy.
This class is included in the No Sweat Nature Study membership, which offers nearly 200 science lessons for elementary and middle school students. Families can join the membership and access the full video library at NoSweatNatureStudy.com.

Free Nature Observation Printable Packet for All Seasons
The No Sweat Nature Study Podcast community has been sharing recommendations of excellent nature-themed books. Click here to find a compilation of listener favorites!
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