*Question*
Q: Plant cells have cell walls that are made of what? Choices: - carbonate - nucleus - tissue - cellulose A:
**Answer**
cellulose

*Question*
Q: How did a vascular let plants grow? Choices: - they could conduct photosynthesis - they could bear fruit - they could reproduce - they could grow taller A:
**Answer**
they could grow taller

*Question*
Q: In birds, modified front legs are actually what? Choices: - tails - arms - claws - wings A:
**Answer**
wings

*Question*
Q: The word antibiotic comes from the greek anti, meaning "against," and bios, meaning this? Choices: - bacteria - germ - virus - life A:
**Answer**
life