Q: Answer the following question given this paragraph: Plastids are membrane-bound organelles with their own DNA. Examples are chloroplasts and chromoplasts. Chloroplasts contain the green pigment chlorophyll and carry out photosynthesis. Chromoplasts make and store other pigments. They give flower petals their bright colors. Q: Chloroplasts and chromoplasts are examples of which membrane bound organelle containing their own dna? A: | OPTIONS:
- chromosomes
- polymers
- bacteria
- plastids
A: plastids

Q: Answer the following question given this paragraph: Q: Plasmodesmata passes through what part of plants? A: | OPTIONS:
- nucleus
- cell ridges
- cytoplasm
- cell walls
A: cell walls

Q: Answer the following question given this paragraph: Veins are made primarily of xylem and phloem. They transport water and minerals to the cells of leaves and carry away dissolved sugar. Q: What are xylem and phloem responsible for transporting to the cells of leaves? A: | OPTIONS:
- air and dirt
- water and blood
- light and gas
- water and minerals
A: water and minerals

Q: Answer the following question given this paragraph: Another major problem caused by air pollution is global climate change. Gases such as carbon dioxide from the burning of fossil fuels increase the natural greenhouse effect. This raises the temperature of Earth's surface. Q: What gas is contributing to the greenhouse effect? A: | OPTIONS:
- nitrogen
- oxygen
- sodium chloride
- carbon dioxide
A: carbon dioxide