Q: Because plants lack what kind of system, their first line of defense is usually the death of cells surrounding infected tissue to prevent spread of infection? A:

OPTIONS:
- nervous system
- digestion system
- hormones system
- immune system

Answer: immune system

Problem: OPTIONS:
- trees
- grasses
- weeds
- ferns
Q: Q: What are the most common seedless vascular plants? A:
Answer: ferns

Problem:OPTIONS:
- philosophic method
- rhythm method
- Socratic method
- scientific method

Q: What is the set of steps that scientists use to learn about the world? A:
****
A: scientific method

Q: What's another term for egg-laying mammals? A:
OPTIONS:
- viviparus
- amphibians
- herbivores
- monotremes
monotremes

Q: Through which organ do hookworm larvae enter the human body? A:
OPTIONS:
- through the lungs
- through the rectum
- through the mouth
- through the skin

Answer: through the skin

input with options: Q: What is the term for a scalar measure of how quickly an object is moving along this line? A:
OPTIONS:
- velocity
- motion
- force
- speed
output:
speed