EBK BIOLOGY
6th Edition
ISBN: 9780134819150
Author: Maier
Publisher: VST
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Chapter 25, Problem 7LTB
Summary Introduction
Introduction:
Plants require water, sunlight and carbon dioxide to perform photosynthesis. There is a waxy covering known as epidermis of the shoot of a plant known as cuticle. It helps to prevent water loss. There are tiny pores on the epidermis of leaves called stomata. They allow carbon dioxide to enter the cell. However, it also lets water to move out from the cell. This is done with the help of guard cells that encloses the stomata.
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Vernalization is a plant response to: Light Gravity Physical contact None of the above
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Plant transpiration accounts for what % of atmospheric water vapor? 50% 90% 5% 75%
Plant stomata have guard cells. Guard cells will;
Always leave the stomata open
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Close the stomata when conditions are dry
Two mechanical tissues of the cortex in herbaceous stem. _____________________________________________________
Which of these mechanical tissues may be photosynthetic in function? _____________________________________________________
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- Stomata open in response to light when _______ a. ions flow into guard cell cytoplasm b. ions flow out of guard cell cytoplasm c. water evaporates out of guard cellsarrow_forwardwhy do stomata open due to high humidity?arrow_forwardAn environmental factor that makes it possible for roots to grow deeper into the soil Light intensity Gravitational force Air supply None of the abovearrow_forward
- Stomata are openings on plants that allow for gas exchange. True Falsearrow_forwardWhen farmers apply too much fertilizer to the ground, the solute concentration is higher in the soil than it is in the roots. Explain how this would affect plants. And place these structures in the order that water passes through them during transpiration: endodermis, root cortex, root hair, spongy mesophyll, stomata, and xylem. -Thank you!arrow_forwardWhat is the phenomenon wherein the plant grows toward the unidirectional light? Photoperiodism Phototropism Thigmonasty Photonastyarrow_forward
- Inhibiting the uptake of IAA (the IAA anion) into cells will have a smaller effect on gravitropic and phototropic responses than inhibiting the activity of the plant's PIN proteins. True Falsearrow_forwardDrag and drop the labels onto the diagram of water and mineral transport through the xylem in plants. Cholces may be used more than once or not at all. Transpiration Photosynthetic cells This will close when water is scarce. Absorption of water by root Cortex cells in root Phloem URALarrow_forwardLabel A, B, C and D as the following: -Xylem -Cortex -Phloem -Pitharrow_forward
- To determine: The reason for plant death if its stomata is closed or opened all the time.arrow_forwardThe Calvin cycle (light-independent reaction) occurs in the Matrix Xylem Cristae membrane Stroma Thylakoid membranearrow_forwardH2O is polar molecule. List 2 emergence properties of h2O that enables it to be stretched through xylemarrow_forward
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