Stems: STRUCTURE & FUNCTION. Workbook 23.3. Stem Structure & Function. 1. What are the three main functions of stems? Stems produce organs (leaves, flowers), hold leaves up to sun, and transport materials throughout plant
Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.
Stems:STRUCTURE & FUNCTION
1. What are the three main functions of stems?
Stems produce organs (leaves, flowers), hold leaves up to sun, and transport materials throughout plant
2. What is an example of a stem that conducts photosynthesis and stores water?
Desert cactus stem
3. What is a node?
Where leaves are attached to the stem
4. What kind of plant tissue does a bud contain?
Apical meristem - area of rapidly dividing cells [GROWTH!]
5. What does a vascular bundle contain?
Xylem (carries water) and phloem (carries sugars)
(IN A RING)
IN MONOCOTS, VASCULAR BUNDLES ARE SCATTERED
IN DICOTS, VASCULAR BUNDLES ARE ARRANGED IN A RING
COMPOSED OF VASCULAR TISSUE, GROUND TISSUE, AND EPIDERMAL TISSUE
VASCULAR TISSUES ARE IN VASCULAR BUNDLES
8. Plants grow in a way that is the same as the way animals grow.
False – DIFFERENT FROM
9. The # of legs an animal will have is predetermined, but the # of branches a plant will have is not predetermined.
10. Primary growth of stems is the result of elongation of cells produced in the ground tissue
False – APICAL MERISTEM
11. The increasing thickness of stems and roots in dicots and gymnosperms is called new growth
False – SECONDARY
12. Secondary growth is common in monocots
False - RARE
13. Dicots can grow to great heights because the increase in width supports the weight.
14. Vascular cambium forms between the xylem and phloem of the vascular bundles
15. In conifers and dicots, secondary growth takes place in stems and roots called vascular cambium and cork cambium
False - MERISTEMS
16. The inner layers of a stem are produced by cork cambium
False – OUTER COVERING
17. Stems become thicker because the cambium produces new layers of vascular tissue each year
19. Most of what we call “wood” is made up of layers of xylem.
20. The dark wood that no longer conducts water is called .
21. The wood that is active in fluid transport is called .
22. The lighter wood in tree rings contains cells with thin cell walls compared with the cells in darker wood.
23. Alternating layers of light wood and dark wood are used to estimate a tree’s.
Girdling will eventually cause parts of the tree above the injury to die. Because…