Which of the following cell types conducts water most rapidly through a plant?
A. parenchyma cells
B. sclerenchyma cells
C. sieve tubes
D. vessel members
E. phloem
D. vessel members
Xylem, which transports water through the body of a plant, is composed of tracheids and vessel members. Both of these cell types are dead at maturity. Water moves between tracheids, which sit next to one another, through pits. The vessel member cells are joined end to end with the space between cells almost completely open or punctuated with strips of cell wall material. This allows water to travel faster through the vessel members.
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When does the cell plate form during cell division?
A. At the completion of plant cell mitosis B. At the completion of animal cell mitosis C. In the middle of animal cell mitosis D. In the middle of plant cell mitosis
Genetic exchange between 2 homologous chromosomes is called
A. synapsis. B. pleiotropy. C. crossing over. D. allelic exchange. E. independent assortment.
Which of the following can cause anemia?
a. red blood cells in short supply b. abnormally shaped blood cells c. a low iron diet d. heavy menstrual periods e. all of these can cause anemia
Which sense utilizes mechanical energy?
a. sense of temperature b. muscle pressure c. sense of vision d. sense of taste e. sense of smell