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Published byMabel Miller Modified over 8 years ago
Chapter 8 Section 2 Pages 277-283
Stomata - the openings in dermal tissue that control the plant’s exchange of water vapor, oxygen, and carbon dioxide in the atmosphere.
Vascular system - In most plants this makes up the two types of long, tube-like cells, the xylem and phloem. Xylem - transport water and dissolve nutrients from the roots up a stem to the leaves. Phloem - carries the energy-rich sugars and carbohydrates down a stem and to the roots.
Root system - this anchors a plant and allows the exchange of materials with the soil.
Shoot system - stems and leaves make up this structure which is used for photosynthesis, support, storage, and the exchange of materials.
8.2 Review page 283 Q1 - What are the three main types of tissues in plants? (7.5.a)
A1. The three main types of tissue in plants are : - dermal - vascular - ground See page 279
Q2. What organs make up the shoot system? (7.5.b)
A2. The organs that make up the shoot system are: - stems - leaves
Q3. Describe three ways in which plant structures are sometimes adapted to different environments. (7.5.b)
A3. Plant structure adaptations: 1) Cacti (catus) have a thick dermal tissue that protects stems from sun and wind 2) Peas have tendrils that wind around a source of support to help the plant grow toward sunlight
A3 continued 3) Orchids have roots that are exposed to air that absorb water running of trees or plants.
Q4. Predict what might happen to a plant adapted to damp conditions if it were moved to desert conditions?
A4 -The plant adapted to damp conditions might end up with leaves and stem that shrivel and wither because it has no adaptations fro surviving in dry conditions.
Q5. Infer - Why might damage to a tree take awhile to become obvious?
A5. Severe damage to a tree might not be obvious at first because the damage might only weaken the tree initially. However, eventually with time, the tree could become diseased, infected, or even begin decomposing. This could result in death of the tree.
Q6 - Compare and Contrast: In what ways are stem and roots similar, and how do they differ?
A6. Stem and Roots: Similar: they both have: - 3 tissue types - can be underground - store sugars
A6 continued: Different: Stems usually are above ground Stems have nodes Roots usually are below ground Roots absorb water and nutrients
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