San Diego State University Nervous System of the Coprophagous Insects Questions

1. An idiobiont is…

1. …a parasitoid in which the nervous system of the host has been manipulated so that the host behaves in a manner detrimental to itself but beneficial to its parasitoid.
2. …a parasitoid that consumes its host while the host is still feeding and growing.
3. …a parasitoid whose host is still feeding and growing, but is being prevented from undergoing metamorphosis by the parasitoid.
4. …a parasitoid whose host has been paralyzed by the mother of its parasitoid(s) and no longer feeds or grows.
5. …a parasitoid that parasitizes another parasitoid.

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2. Which of the following ANT/PLANT interactions is/are generally considered antagonistic?

1. Ants tending butterfly caterpillars on plant leaves.
2. Leaf-cutter ants cultivating fungus gardens with chewed-up plant leaves.
3. Ant consumption of plant elaiosomes.
4. Ants tending extra-floral nectaries.
5. Ants living in plant domatia.
6. A and B are considered antagonistic
7. A, B, and C are considered antagonistic
8. A, B, C, and D are considered antagonistic
9. All of the above are considered antagonistic

3. Which of the following statements is true about the relationship between figs and wasps in the family Agaonidae?

1. The wasps are exclusively mutualistic pollinators of the figs.
2. There is a high level of cophylogenesis between pollinating wasps and figs.
3. There is very little correlation between fig fruit morphology and fig wasp morphology.
4. All fruits in fig trees are pollinated by and set seed as a result of pollinating fig wasps.
5. Sex ratios in pollinating fig wasps are almost always 50:50.

4. Which of the following is NOT TRUE about necrophagous and coprophagous insects?

a.They are often very closely related.

b.The widespread occurrence of viviparity in these insects is due to a single origin of this trait in the common ancestor of these groups.

c.Both have characteristic patterns of succession.

d.Both are rare because of the scarcity of the resources.

e.Both provide important ecosystem services.