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B3.1 Bio Review

What is always a consequence of the evaporation of water from mesophyll cells in leaves of a healthy plant? Water moves up the stem in the xylem.
What occurs at gas exchange surfaces in the lungs of mammals? I. Gases diffuse across a moist surface II. Concentration gradients are maintained by ventilation. III. Water is lost.
For what reason do large organisms need specialized gas exchange structures? They have a relatively small surface in contact with the outside
What can be seen in a plant diagram of a leaf? Vascular bundles and thickness of palisade mesophyll
What occurs during inspiration? External intercostal muscles contract, decreasing the pressure in the thorax.
Which variable(s) must be controlled if transpiration rates are compared in different plant species? I. Total leaf surface area III. Room temperature
What occurs during inhalation? External Intercostal muscles: contract Movement of ribs: rise
Which is an adaptation to increase rates of gas exchange in the lungs? High vascularization
Created by: jeanay26
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