1. 200 300 400 500 100 200 300 400 500 100 200 300 400 500 100 200 300 400 500 100 200 300 400 500 100 Body parts SystemsAnimals Depen- dency Plants

2. The basic unit of structure for all living things.

3. What is a cell?

4. Blood vessels that carry blood away from the heart

5. What are arteries?

6. A watery liquid in the mouth that begins the chemical break down of food.

7. What is saliva?

8. Blood vessels that carry blood toward the heart

9. What are veins?

10. Chemicals that break down food

11. What are enzymes?

12. The body parts that work together to take air into the body and push it back out

13. What is the respiratory system?

14. The transport system of the body that carries oxygen and nutrients to the cells and removes wastes

15. What is the circulatory system?

16. The organ system in which food is broken down into a form that cells can use

17. What is the digestive system?

18. The system of ridding the body of harmful wastes

19. What is the excretory system?

20. A group of plants and animals that live in a certain area and depend on one another

21. What is a community?

22. To move to another region as the seasons change

23. What is migration?

24. An animal that eats only plants

25. What is an herbivore?

26. An animal hunted for food by another animal

27. What is prey?

28. A living thing that eats other living thing to survive

29. What is a consumer?

30. An animal with a backbone

31. What is a vertebrate?

32. Any substance used by living things for energy, growth, repair or other life processes

33. What is a nutrient?

34. A place where an animal or plant lives

35. What is a habitat?

36. Swamps, marshes, and bogs that are home to many kinds of animals and plants

37. What are wetlands?

38. The surroundings that affect a living thing

39. What is the environment?

40. A place where living and non-living things interact

41. What is an ecosystem?

42. The part of the plant that makes seeds

43. What is a flower?

44. A tree or shrub that bears its seed in cones

45. What is a conifer?

46. The sprouting of a seed

47. What is germination?

48. A plant part in which photosynthesis takes place

49. What is a leaf?

50. The process by which producers (plants) make their own food using energy from the sun

51. What is photosynthesis?