Question

The protection and pollination mutualism do not come into conflict on the swollen thorn acacia Acacia hindsii, because A. there is spatial separation of inflorescences and resources guarding ants. B. hindsii inflorescences lack nectar. C. A. hindsii inflorescences contain a chemical ant repellent. D. All of the choices are correct. E. Both A and B are correct. Prairie dog disturbances maximize plant diversity A. by burrowing and grazing. B. by creating patches open for dispersal. C. by allowing good competitors and good colonizers to coexist in the grassland. D. at intermediate levels. E. All of the choices are correct. Gause et al. attempted to produce population cycles of Paramecium caudatum and it Didinium nasutum, as shown in the graphs below (# individuals on the y-axis time or Populations of P. caudatum are indicated by a solid line and populations of D. nasuta indicated by a dotted line. The results of experiment A (left) and B (right) are difference experiment B likely includes ___. A. A source population for D. nasutum B. Immigration of D. nasutum into the system C. A spatial refuge for P. caudatum D. Increased dispersal ability of D. nasutum E. Increased resources for D. nasutum

Answer 1

37. D According to Raine, Willmer, and Stone experiment identified it lack nectar, chemical repellent, spatial separation.

38. E It based on Intermediate disturbance hypothesis all are true.

39. C Paramecium and D. nasutum both introduced together the number of predators increases at small quantity by feed on Paramecia, but the prey is in the refuge and the predators cannot attain them. Finally the predators die out entirely owing to the lack of food.