Cells produced on the inside of the vascular cambium differentiate to form which vascular tissue?
a. cork cambium
b. primary phloem
c. primary xylem
d. secondary phloem
e. secondary xylem
E
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Which of the following statements is true regarding the systemic acquired resistance (SAR) response in plants? Select all correct choices
A. It is pathogen-specific. B. It relies on salicylic acid. C. It is only effective against biotrophic pathogens. D. It requires dead tissue.
The loss of water by evaporation through stomata is called ________
a. expiration b. translocation c. respiration d. transpiration
Bacterial biofilms are important medically because:
a. They may form on catheters b. They are resistant to treatment with antibiotics c. They can form dental plaque d. They are resistant to immune defenses e. All are correct
In the disease myasthenia gravis, the immune system attacks the receptors for the neurotransmitter acetylcholine. A drug is used to inhibit the enzyme acetylcholinesterase, which normally removes the neurotransmitter
This improves the condition of the patient. How does this work?