{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Pset8plantquestions

1653 4e97 98f7

Info iconThis preview shows pages 8–10. Sign up to view the full content.

View Full Document Right Arrow Icon
https://coursework.stanford.edu/portal/tool/1c2f43e9-1653-4e97-98f7-93a4fbb2cb09/jsf/delivery/beginTakingAssessment D. the accumulation of the coat protein in the transformed variety interferes with viral packaging and spread E. none of the above F. all the above Reset Selection Mark for Review What's This? Question 2 of 10 4.0 Points Despite the wide distribution of pathogens, epidemics are not common in natural plant communities. Why is this so? Pick ONE. A. susceptible plants are not widespread B. virulent pathogens are not maintained at high levels to trigger massive infections C. pathogen growth and colonization are sensitive to environmental factors, such as wind, temperature, humidity D. none of the above E. all of the above Reset Selection Mark for Review What's This? Question 3 of 10 4.0 Points Which of the following is not a method by which plants protect themselves from toxins they produce? A. By compartmentalizing them B. By building up a tolerance to them C. By adjusting the timing of toxin production D. By storing them in waxes E. By storing them in vacuoles Reset Selection Mark for Review What's This? Question 4 of 10 4.0 Points A plant’s first line of defense is its A. outer surface. B. root system. C. apical meristem. D. lenticels.
Background image of page 8

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
5/29/13 8:53 PM 2013 Plant Biology Lectures 8-10 Problem Set 8 Page 9 of 11 https://coursework.stanford.edu/portal/tool/1c2f43e9-1653-4e97-98f7-93a4fbb2cb09/jsf/delivery/beginTakingAssessment E. vascular system. Reset Selection Mark for Review What's This? Question 5 of 10 4.0 Points Which of the following statements about induced responses to pathogens is false? A. They can be genetically determined. B. They are activated when constitutive defenses fail to deter a pathogen. C. They are triggered by elicitors. D. They are the first line of defense against pathogens. E. All of the above are true; none is false. Reset Selection Mark for Review What's This? Question 6 of 10 4.0 Points Plants that can reproduce asexually often colonize large areas of land. From the perspective of disease and herbivory, how might asexual reproduction be an advantage to plants? A. The progeny of asexual reproduction are genetically diverse. B. Genes that render a plant susceptible in infection by a particular pathogen are not passed on the progeny of asexual reproduction. C. If the parent plant carries genes for disease resistance, all progeny would also have these genes. D. Systemic responses to infection would be expected to differ among the progeny of asexual reproduction. E. If the parent plant was susceptible to attack by herbivores, the progeny would be as well. Reset Selection Mark for Review What's This? Question 7 of 10 4.0 Points Caterpillars feasting on a leaf often A. are stunted because they ingest a protease inhibitor. B. induce the formation of phytoalexins.
Background image of page 9
Image of page 10
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

Page8 / 11

1653 4e97 98f7

This preview shows document pages 8 - 10. Sign up to view the full document.

View Full Document Right Arrow Icon bookmark
Ask a homework question - tutors are online