In a hypothetical situation, a bacterium lives on the surface of a leaf, where it obtains nutrition from the leaf's nonliving, waxy covering while inhibiting the growth of other microbes that are plant pathogens. If this bacterium gains access to the inside of a leaf, however, it causes a fatal disease in the plant. Once the plant dies, the bacterium and its offspring decompose the plant. What is the correct sequence of ecological roles played by the bacterium in the situation described here? Use only those that apply.
1. nutrient recycler
2. mutualist
3. commensal
4. parasite
5. primary producer
A) 1, 3, 4
B) 2, 3, 4
C) 2, 4, 1
D) 1, 2, 5
E) 1, 2, 3
Parts of the Hand Used in Palpation; Ulnar Surface
Surface magnetic field of SU Aur (a young star of T Tauri type), reconstructed by means of Zeeman-Do
Surface molecules involved in the interaction between an antigen-presenting cell and a CD4+ T cell.
Effleurage to the foot bottom using the fist. Hold the dorsal surface of the foot with one hand ...
Clear the tarsals, metatarsals, and toes. Stand at the end of the table, support the plantar surface ...
Micrograph of toothbrush bristles scrubbing plaque on a tooth surface.