
Concept explainers
To explain: The reason why stomata need to be closed, but lenticels do not.
Concept introduction:
The woody plants possess an outer hard layer called periderm in the trunks of plants. The periderm is derived from the cork cambium, a component of lateral meristem. This layer protects trees from microbial attack and insect invasions. Lenticels are loose aggregate of cells in the periderm. They help in gaseous exchange between the atmosphere and the living tissue inside the bark.
The stomata are openings in the epidermis of the leaf that allow exchange of gases. These are also the sites where the maximum evaporation takes place. The stomata are surrounded by guard cells that control their opening and closing.

Want to see the full answer?
Check out a sample textbook solution
Chapter 35 Solutions
Campbell Biology, Books a la Carte Edition & Modified Mastering Biology with Pearson eText -- ValuePack Access Card -- for Campbell Biology
- series of two-point crosses were carried out among six loci (a, b, c, d, e and f), producing the following recombination frequencies. According to the data below, the genes can be placed into how many different linkage groups? Loci a and b Percent Recombination 50 a and c 14 a and d 10 a and e 50 a and f 50 b and c 50 b and d 50 b and e 35 b and f 20 c and d 5 c and e 50 c and f 50 d and e 50 d and f 50 18 e and f Selected Answer: n6 Draw genetic maps for the linkage groups for the data in question #5. Please use the format given below to indicate the genetic distances. Z e.g. Linkage group 1=P____5 mu__Q____12 mu R 38 mu 5 Linkage group 2-X_____3 mu__Y_4 mu sanightarrow_forwardWhat settings would being able to isolate individual bacteria colonies from a mixed bacterial culture be useful?arrow_forwardCan I get a handwritten answer please. I'm having a hard time understanding this process. Thanksarrow_forward
- Biology How many grams of sucrose would you add to 100mL of water to make a 100 mL of 5% (w/v) sucrosesolution?arrow_forwardWhich marker does this DNA 5ʹ AATTGGCAATTGGCAATTGGCAATTGGCAATTGGCAATTGGCAATTGGC 3ʹ show?arrow_forwardThe Z value of LOD for two genes is 4, what does it mean for linkage and inheritance?arrow_forward
- Biology How will you make a 50-ul reaction mixture with 2uM primer DNA using 10 uM primer DNA stocksolution and water?arrow_forwardBiology You’re going to make 1% (w/v) agarose gel in 0.5XTBE buffer 100 ml. How much agarose are you goingto add to 100 ml of buffer? The volume of agaroseis negligible.arrow_forwardBiology How will you make a 50-ul reaction mixture with0.2 mM dNTP using 2-mM dNTP stock solution andwater?arrow_forward
- Biology (MindTap Course List)BiologyISBN:9781337392938Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. BergPublisher:Cengage LearningBiology: The Unity and Diversity of Life (MindTap...BiologyISBN:9781337408332Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa StarrPublisher:Cengage LearningBiology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStax
- Biology Today and Tomorrow without Physiology (Mi...BiologyISBN:9781305117396Author:Cecie Starr, Christine Evers, Lisa StarrPublisher:Cengage LearningBiology: The Unity and Diversity of Life (MindTap...BiologyISBN:9781305073951Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa StarrPublisher:Cengage Learning





