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what type of survivorship curve would you expect for a plant species in which most seedlings die? (recall: there are three types of survivorship curves)

Choose from three types of symbiosis parasitism, commensalism, and mutualism to fill in the blanks next to the examples. Some answers may be used more than once.  a. Single celled algae live in the tissue of coral animals. The algae provide food for the coral, while the coral provides a stable home for the algae.  This is [answer1] b. flowering plants reward visiting insects with nectar. The insects, in turn, carry pollen to other followers. This is [answer2] c. Small wasps lay eggs on other insects. The eggs hatch into larvae that feed on the insects and kill them. This is [answer3]

What are the mechanisms that can lead to SYMPATRIC speciation:  Check ALL CORRECT ANSWERS 

Below are two extra credit questions for this exam, worth 2 points each. You may choose one or both to answer, but only a maximum of 2 points will be added to your final score. 

Eagles and bears feed on spawning salmon. If shrimp are introduced that compete with salmon for food, 

Briefly define “Biological Species Concept”.   

If an age-structure diagram indicates that there are more people in the prereproductive stage of life than in the reproductive stage, then replacement reproduction, over the long run, will result in 

Which of the following is based on the interactions of species with their abiotic environment? 

In an ecosystem, these organisms are responsible for converting solar energy to the stored energy found in organic compounds. 

7.  Strophic is the form in which the same melody is repeated for each stanza.