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The Shoot
Botany: The Plant Stem
| Question | Answer |
|---|---|
| What are the two main functions of the stem? | Support and Conduction |
| What 2 parts of the stem become lateral shoots? | leaves and axillary buds |
| What does the leaf primordia become? | Leaves |
| What does the bud primordia become? | Lateral Shoots |
| How do the stems grow in length? | Internodal elongation |
| How do the stems grow in width? | longitudinal divisions and cell enlargement |
| the vascular cylinder is composed of vascular bundles separated by a very narrow region of parenchyma cells. These parenchymatous regions care called ______, interconnecting the pith and cortex | Interfascicular regions |
| What type of cells does the cortex consist of? | collenchyma and parenchyma cells |
| In the vast majority of stems, the primary phloem develops from the outer cells of the _______ | Vascular Cambium |
| The stems of _______ (or nonwoody) eudicots do not undergo secondary growth | Herbaceous |
| The extensions from the vascular system in the stem toward the leaves are known as ______ | Leaf Traces |
| the gaps in the ground tissues above where the leaf traces diverge are the ______ | Leaf trace gaps |
| Scale-like appendages, called ______, develop at the base of some leaves. | Stipules |
| In monocots (and some eudicots), the base of the leaf is expanded into a ______, encircling the stem. | Sheath |
| A leaf type that has 1 petiole to 1 leaf | Simple leaf |
| A leaf type that has 1 petiole to multiple leaves | Compound |
| In hydrophytes (aquatic plants) with leaves that float on water, the stomates are found only on the upper epidermis. (Why?) | If the stomates were at the bottom, they would be sucking in water. They are have large air spaces so they can float |
| In xerophytes (plants living in arid environments), the stomates are found in sunken depressions (stomatal crypts) on the lower epidermis with trichomes. (Why?) | So the trichome can absorb more moisture in that area |
| How are stomates arranged in eudicot leaves? | scattered over the surface of the leaf, with young and old stomates occurring side-by-side. |
| How are stomates arranged in monocot leaves? | stomates arearranged along parallel rows along the long axis of the leaf. |
| In what cells are most chloroplasts located? | Palisade cells |
| In most eudicots, the veins are arranged in branching pattern (from large veins to small veins) called _______ | netted venation |
| monocot leaves have many veins of similar size that extend along the leaf axis. This is _______ | parallel venation |
| How many layers around the vascular cambium do C4 plants have? | 2 layers |
| How many layers do C3 plants have? | 1 Layer and the mesophyll and bundle-sheath cells do NOT form concentric layers around the vascular bundles. |
Created by:
Patrickburkett12
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