A lichen is made up of two separate organisms, a fungus and cyanobacteria. The fungus transports water and nutrients to the cyanobacteria which then creates glucose for use by the fungus. Which of the following statements would be the best analogy of a lichen relationship to plant organs and tissues? * The cyanobacteria acts as the ground tissue while the fungus acts as the vascular tissue.
The cyanobacteria functions as the roots while the fungus is similar to the flower of a plant.
The cyanobacteria acts as the meristematic tissue and the fungus acts as the ground tissues.
The cyanobacteria is similar to the xylem in a plant and the fungus is similar to the phloem in a plant.

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Cells control gene expression at which steps

Which of the following statements is correct in hour our immune system responds to a potential pathogen? a. the adapted immune system will call on the innate immune system to destroy the pathogen. b. b cells will start reading the antigen code immediately and call t cells to assist in destroying the pathogen. c. the skin will be the first line of defense, and then the many phagocytes in the bloodstream will attempt to consume the possible pathogen. d. the t-cells in the adapted immune systems are the first to recognize the pathogen vaccines are weakened forms of disease causing microorganisms, which are given to patients to prevent disease. after the vaccine is administered, the immune system responds by creating a(n) to recognize the a. antigen, antibody b. antibody, antigen c. antibody, antibiotic d. antibiotic, antibody