Plant Science Chapter 3 Key Terms

2. The central main vein running through the middle of the leaf blade.
5. The part of a young seedling stem below the cotyledons and above the root.
7. A leaf arrangement where three or more leaves grow from the same node on the stem.
9. Plant structures that anchor the plant and absorb water and nutrients from the soil.
12. Flowering plants with one cotyledon; usually have parallel leaf venation.
13. Seed-producing plants that do not form flowers; seeds are often found in cones.
15. The stalk that attaches a leaf blade to the stem.
16. The plant structure that supports leaves and flowers and transports water, minerals, and food.
20. A branching root system with many thin roots spreading out near the soil surface.
22. Flowering plants with two seed leaves (cotyledons); usually have net-like leaf veins.
23. The slender stalk of a stamen that holds up the anther in a flower.
24. Tiny extensions of root cells that increase surface area for absorption of water and minerals.

1. A type of leaf venation or leaflet arrangement where smaller veins branch from one main midrib.
3. Points on a stem where leaves, branches, or buds grow.
4. The broad, flat part of a leaf.
6. A leaf divided into multiple leaflets but attached to a single petiole.
8. Horizontal underground stems that store food and produce new shoots and roots.
10. A growth tissue that produces new xylem and phloem, causing stems and roots to thicken.
11. Flowers containing all four main parts: sepals, petals, stamens, and pistils.
14. A structure in grasses that wraps around the stem where the leaf attaches.
17. Thick, central primary roots that grow deep into the soil (like carrots).
18. The process of a seed sprouting and beginning to grow into a plant.
19. Seed leaves inside a seed that provide nutrients to the growing plant.
21. The pattern of veins in a leaf.