Question: Q: Cells infected with viruses secrete what example of early induced proteins, which travel to adjacent cells and induce them to make antiviral proteins, a sacrifice that protects the surrounding cells? Choices: - hormones - prokaryotes - metabolites - interferons A:
Answer: interferons

Question: Q: Some plants can detect increased levels of what when reflected from leaves of encroaching neighbors? Choices: - water - oxygen - air - light A:
Answer: light

Question: Q: What are the two types of vascular tissues? Choices: - ectoderm and phloem - epidermis and phloem - ganglia and phloem - xylem and phloem A:
Answer:
xylem and phloem