Q: What are plastids that contain other pigments? Choices: - chloroplasts - lucoplasts - cytoplasm - chromoplasts A:
chromoplasts

Q: What part of the plant holds the plant upright? Choices: - roots - leaves - notochord - the stem A:
the stem

Q: Q: What helps represent age-sex structure of the population? Choices: - habitat chart - density graph - biome model - population pyramid A:
A: population pyramid

Question: Q: Photoautotrophs including (a) plants, (b) algae, and (c) cyanobacteria synthesize their organic compounds via photosynthesis using sunlight as this? Choices: - light source4 - heating source - fuel source - energy source A:
Answer: energy source

*Question*
Q: Within organs, arteries branch into what small vessels that convey blood to the capillaries? Choices: - Metarterioles - blood valves - aeortic vessels - arterioles A:
**Answer**
arterioles

*Question*
Q: Endotherms are warmed mostly by heat generated by what? Choices: - movement - electricity - the sun - metabolism A:
**Answer**
metabolism