7ST Science Final Exam Study Guide

Across

2. Plants, animals and all living things are made of ____. They are the smallest unit of a living thing that can carry out the basic processes of life.
4. The _____ is the opening of the pistil that receives pollen grains.
8. The ____ _____ is made of a hard, specialized sugar called cellulose. It protects plants, gives them their shape, and provides extra support for the plant. It also lets food and waste move in and out of the cell.
9. The ___ is the central part of the Earth and has two parts: an outer liquid part and an inner solid part. It is made of nickel and iron.
12. ___ separates the xylem from the phloem.
17. ____ are the structures of cells that work together to perform life processes.
18. ____ grow like fingers out of the bottom of a plant’s stem. They help to support the plant and keep it straight.
20. The ____ is the “brain” of the cell and tells the cell when it is time to use food, to grow, to move, and even to die.
24. The ____ is a part of the cell that turns food into energy. These organelles have layers of folds that give them more surface area to do more work. Cells that require more energy have more mitochondria.
25. ____ ____ is a process when plates move apart, and new rock forms between the two plates. Rock located farther from the ridge is older than the rock located at the center.
28. The ____ part of the plant holds the anther.
29. The ____ grow from the stem of the plant and produce carbohydrates from the water and minerals gathered by the roots.
30. ____ cells have a cell wall, one large central vacuole and chloroplasts.
31. _____ happens when the pollen grains reach the ovules.
32. ____ are produced in the leaves and are then moved to other parts of the plant.
36. ___ are roots that never touch the ground. Plants with these roots usually grow in high trees or on walls and get water from moisture (water) in the air.
40. ___ is when plates converge and one plate will sink or slide beneath another plate.
42. The ____ stores the cell’s food, waste, and water.
43. The ____ _____ are transferred from the stamen to the pistil.
46. Each root has thousands of ____ ____.
47. ____ is the green chemical inside of chloroplasts that absorb sunlight and provide energy for the plant.
48. The _____ is the tube that the pollen grains travel down to reach the ovules.
49. The ____ is the main stalk of the plant that helps to move water and minerals throughout the plant.
51. Flowering plants are called ____.
53. ___ are tube-like structures that move carbohydrates created by the leaves to other parts of the plant.
55. ___ have one large root with a few branching hairy roots. The large root helps plants reach deep sources of water and can store food for the plant.
56. The ____ is the thick layer of solid and molten rock that flows beneath the crust. It is 2,900km thick. In this area, convective currents occur causing the Earth’s plates to move.
57. The ____ are the part of the plant that absorbs water and minerals, stores food, and anchors the plant.

Down

1. The _____ are the “eggs” of the flower that later become the seeds.
3. ____ plants move minerals and water through their roots, stems, and leaves.
5. ____ are tube-like structures that move minerals up from the roots.
6. ____ is a kind of carbohydrate made by plants and is used to make cell walls.
7. ___ is a supercontinent (single landmass) that once existed and broke into two parts called Laurasia and Gondwanaland. Later these two parts broke into several landmasses that are the continents we know today.
10. ____ is a word used to describe organisms that are no longer living.
11. ___ ____ are used to help scientists determine the age of rocks. They are organisms that lived only during a particular time.
12. The ____ ____ is the deepest part of the ocean. It is 11km deep and is deeper than Mt. Everest is tall (9km).
13. ____ plate boundaries are places where plates are moving toward each other. At these areas mountain ranges are created as well as ocean trenches.
14. A ____ is a scientist who studies Earth’s origins, history, structure, composition, and processes.
15. The _____ holds the ovules.
16. ____ happens when the pollen grains are transferred from the stamen to the pistil.
19. ___ is the process of using water from the roots, carbon dioxide from the air, and energy from the sun to make carbohydrates for plants to use.
21. The female structures of plants are called ____.
22. All animal cells have a ___ ____ that is like the “skin” of the cell. This structure gives the cell shape and controls what moves in and out of the cell.
23. ____ are made of thin, branching roots and can have huge networks of roots that help plants absorb lots of water very quickly. These roots can also hold soil in place.
26. The stamen has two parts: the _____ and the _____.
27. ____ is a kind of carbohydrate produced by plants and is used by the plant for energy.
33. ____ is a plant eater.
34. ____ cells have a cell membrane but no cell wall.
35. ____ are where photosynthesis takes place in plant cells. They are known as food factories.
37. When plates move together, one plate will sink under the other, forming an ____ ____, long, narrow, deep valleys on the ocean floor.
38. Your body is made of ____ of cells!
39. The ____ is a gel-like substance that supports the cell’s organelles.
41. ____ plate boundaries are places where plates are moving away from each other. In these areas, seafloor spreading will occur.
44. ___ are openings in leaves that allow carbon dioxide in and oxygen out. They also open to release extra water vapor.
45. The Earth’s crust is made of large pieces called ____. They can move apart, move together, or slide past each other.
47. ____ is a meat eater.
50. The ____ is the thin layer of solid rock that is the outermost part of the Earth. This is the layer on which we live. It is 6-70km thick.
51. The ____ part of the plant contains the pollen grains.
52. The male structures of plants are called ____.
54. The ovary forms ____ to protect the seeds.