Exam 9: Annelids, Nematoda, Echinoderms, Primates, Biodiversity, and Speciation

Currently, scientists estimate there are approximately ______ known species on the planet.

Which of the following evolutionary events happened during the Precambrian Era?

Of the total number of identified species, approximately how many of these are plants?

From the list provided, select the characteristics of all fungi.

The Deepwater Horizon oil spill decreased the Atlantic bluefin tuna population by 70%. This is an example of a loss of diversity due to

Which of the following is included in the excavata supergroup?

Even though sponges have been overhavested, there is still no concern to include them on the threatened species list.

Which of the following has had the largest impact on the loss of biodiversity in rainforest?

Which of the following species belongs in the lobe-finned class of fish?

The ______ is our current geological time frame that focuses on the human activity and the loss of diversity.

Fungi are saprobes. This means they

Commercial fishing uses drag nets that often kill undesired fish. This "clear-cutting" of the ocean floor is an example of

Which extinction period results in the evolution of the first mammals and dinosaurs appearing and forests of conifers and cycades dominate the land?

Which phylum is the only one with members that exhibit radial symmetry and the first to have True tissue?

Which invertebrate is the closest relative of vertebrates?

Marine Protected Areas

If two plants mate to produce a hybrid, and the hybrid is able to reproduce between other hybrids, this will result in a new species. This is an example of ______ speciation.

Which structure of the sponge is close in structure to the choanoflagellates?

To demonstrate your understanding of the phylum Nematoda, from the list provided, select all statements that characterize roundworms.

______ are prokaryotes that are either photoautotrophs or chemoheterotrophs and are further classified by their shape and DNA similarities.