Plant Science Chapter 3 Key Terms

4. Points on a stem where leaves, branches, or buds grow.
8. leaf A leaf divided into multiple leaflets but attached to a single petiole.
9. Tiny extensions of root cells that increase surface area for absorption of water and minerals.
11. A type of leaf venation or leaflet arrangement where smaller veins branch from one main midrib.
14. Roots A branching root system with many thin roots spreading out near the soil surface.
19. The sticky top part of the pistil where pollen lands and germinates.
20. Flowers containing all four main parts: sepals, petals, stamens, and pistils.
21. Horizontal underground stems that store food and produce new shoots and roots.
22. A structure in grasses that wraps around the stem where the leaf attaches.

1. A growth tissue that produces new xylem and phloem, causing stems and roots to thicken.
2. A leaf arrangement where three or more leaves grow from the same node on the stem.
3. The pattern of veins in a leaf.
5. Flowering plants with one cotyledon; usually have parallel leaf venation.
6. The process of a seed sprouting and beginning to grow into a plant.
7. Seed leaves inside a seed that provide nutrients to the growing plant.
10. The plant structure that supports leaves and flowers and transports water, minerals, and food.
12. Thick, central primary roots that grow deep into the soil (like carrots).
13. The slender stalk of a stamen that holds up the anther in a flower.
15. Flowering plants with two seed leaves (cotyledons); usually have net-like leaf veins.
16. The stalk that attaches a leaf blade to the stem.
17. Plant structures that anchor the plant and absorb water and nutrients from the soil.
18. The part of a young seedling stem below the cotyledons and above the root.