Biology 2: Unit 13 Review

4. This type of tissue system includes the xylem and phloem, and acts like a plumbing system for plants
5. This type of tissue system makes up much of the inside of plants. It would include mesophyll, cortex, and pith cells.
6. Before plants could thrive on land, they had to be able to transport their sperm without the use of ___.
9. Many monocots have a highly branched ___ root system
12. This type of vascular tissue has thinner cells that conduct sugars and other nutrients throughout a plant's body.
13. A waxy, watertight covering that covers the nonwoody above ground parts of most plants.
16. A protective coating on a seed that protects the seed from injury and drying out.
20. It is believed that plants evolved from aquatic ___ ___ that could not survive on land.
21. Based on biomass, plants are the most ____ group of organisms on land
22. Pores that allow gases and water out of a plant.
23. A mass of cells that covers and protects the actively growing root tip.
25. The structure that encloses the sperm of plants that helps keep them from drying out.
27. The space between two nodes on a stem is called a(n) ___.
28. This type of vascular tissue is thick-walled cells that conduct water and mineral nutrients from roots to the stems and leaves.
30. The stalk that attaches a leaf to a stem

1. This type of tissue system in plants covers the outside of a plant's body. In the nonwoody parts of the plant it forms a "skin" called the epidermis.
2. Plants that lack a vascular system are called ___.
3. Changes in water ___ within the guard cells allow the stomata to open and close
7. Slender projections of the cell membrane on a root that increase the surface area and the ability of a root to absorb water and mineral nutrients.
8. Leaves with an undivided blade are called ___ leaves.
10. These examples of roots grow from above ground stems or leaves. An example would be prop roots of corn.
11. The symbiotic relationship between fungi and the roots of plants are called ___.
14. Many dicots have a large central roots from which smaller roots branch. This
15. This structure on a plant supports the leaves and houses the vascular tissue.
17. A leaf blade may be divided into two or more sections called ___, which reduce the surface area of leaves.
18. A pair of ___ ___ surround the stoma and help allow it to open and close
19. The primary photosynthetic organ on a plant
23. This structure anchors plants to a substrate, absorbs water and nutrients, and can even function in the storage of nutrients.
24. Leaves are attached to the stem at a point a(n) called ___.
26. The embryo in a seed is in a state of suspended ___, which allows seeds to keep from sprouting until conditions are favorable.
29. the flattened portion of a leaf