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Ch.22 study Guide

QuestionAnswer
1. Name the 3 main types of plant cells. Parenchyma cells, Collenchyma cells,Seclerenchyma
2. Parenchyma cell functions and an example of where these cells are found. Functions: Storage, photosynthesis, gas exchange, protection, tissue repair found throughout the plant
3. Collenchyma cell functions and an example of where these cells are found. Functions: Support for surrounding tissues, Procides flexibility for plant, tissue repair. Found: the outer skin of the plant
5. Name the 4 main types of plant tissues. Meristematic, dermal, Vascular,ground
6. Describe meristemic tissues. make up meristems. types: Apical (roots, length) Intercalary (leaf stem, length), Lateral (root stem, diameter)
7. Describe dermal tissues. Outer skin of plant-Epidermis Trichomes- hairlike projections Root Hairs- + root surface area Stromata- passage cells
8. Describe vascular tissues. Xylem- water from the roots Vessel elements- tubular cells free water movement Tracheids- pitted centers water movement Phloem- moves sugars through the plant
9. Describe ground tissues. Consist of parenchyma, collenchyma, and sclerenchyma cells Functions include photosynthesis, storage, and support Most common type of cell found in plants
10. Describe root functions. the roots hold the plant still in the ground, gather water and minerals that go to the rest of the plant
11. List the layers of the root from the outside inward. root cap, cortex,
12. Describe the functions of stems. main functions are to support, transport water and dissolved substances and stores food and water
13. Explain herbaceous and woody stems herbaceous stems are green and flexible woody stems are like the bark of a tree
14. Describe the functions of leaves. main function of the leaf is photosynthesis the flat part of a leaf is called a blade the blade is attached to the stem by a petiole water evaporates by transportation from the leaf
15. Name the 4 plant hormones. Auxin, Gibberellins, Ethylene, Cytokinins
16. Describe auxins and how they affect a plant. stimulates the lengthening of cells affects the rate of growth in roots stems and leaves. it causes plants to mostly grow upward, this is called apical dominance it cause fruits to drop from the plant when they get ripe
17. Describe gibberellins and how they affect a plant. causes cell elongation, stimulates cell division, and affects seed growth it causes the plant to grow taller
18. Describe ethylene and how they affect a plant. affects the ripening of fruits fruits are softer and sweeter than unripe fruits the only known gaseous hormone found in plant tissues such as ripening fruits, dying leaves, and flowers
19. Describe cytokinins and how they affect a plant. promotes cell division produced in rapidly dividing cells if its used in plants with auxins it causes the plant to grow rapidly
20. Describe a nastic response and give 2 examples. a response of a plant that causes movement independent of the direction of the stimulus its not a growth response, it is reversible and can be repeated solar tracking of sunflowers closing of a Venus flytrap’s leaves
22. Name and describe three tropisms. a tropism is a plant’s growth response to an external stimulus
FROM THE PLANT IDENTIFICATION LAB: 1. In stems, how are vascular tissues arranged for monocots and dicots? downward, stems have a negative gravitropism because they grow upward thigmotropism-response to m
FROM THE PLANT IDENTIFICATION LAB: 2. In roots, how are vascular tissues arranged for monocots and dicots? They contain vascular bundles, either in a circle near the edge of the stem (as in dicots) or scattered throughout the stem(as in monocots)
In dicots, the vascular tissue is in the shape of a star, while in monocots, it forms a ring around a central path.
Created by: Alexoltman
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