zoology All metazoa taxa are believed to have evolved from a single common ances
ID: 56300 • Letter: Z
Question
zoology All metazoa taxa are believed to have evolved from a single common ancestor and thought of as monophyletic. True False TRUE or FALSE My favorite bony fish is the Mola Mola (giant ocean sunfish), which feeds exclusively Cnidarians making the fish a primary consumer True False y Jon notices that in a certain fly species, some females prefer to feed and lay eggs on decaying Other females prefer to feed and lay eggs on decaying beach plants. Both male and female flies primary scent to find these plants from afar. Females tend to mate where they feed, and the Jon finds a genetic scent preference in these flies. Based on the above information, what might be occurring in this fly polyploldization there is not enough information to decide what is happening. divergence due to vicariance postzygotic isolation divergence in sympatry Which of the following groups of terms best describes the acoelomorpha? triploblastic; bilaterally symmetric; simple digestive tracts; mobile triploblastic; radially symmetric; simple digestive tracts; immobile diploblastic; bilaterally symmetric; complex digestive tracts; mobile triploblastic; radially symmetric; simple digestive tracts; mobile The basic animal body plan can be thought of as simply a series of boxes several joined rings What feature was not present in the first eukaryotes? Cytoskeleton cell wall mitochondria nucleusExplanation / Answer
I) Matches are as follows:
1. Phagotrophy i) Nutrient delivery
2. Trypanosoma c) Protist pathogen
3. Choanoflagellate f) Sister group to metazoan
4.Ameobocytes b) Pseudopoda
5.Fresh water sponge g) Neurotoxic effect
6.Hexactinellida h) Spicules of 6-rays
7.Nematocysts j) mixotrophic with algae endosymbionts
8.Colloblasts a) Ctenophora
9. Planula d)Scyphistoma
10. Cestoda e) Two host
II) Answers for multiple choice questions:
1. True: All metazoan taxa are believed to evolve from same ancestors.
2. False: Mola mola fish also eats small fishes. It does not depend on Cniderians.
3. There is not enough information to decide what is happening.
4. Acoelomorpha have triploblastic, bilaterally symmatric, simple digestive tracts and thet are mobile.
5. The basic animal body plan can be thought of as a tube within a tube.
6. Primitive eukaryotes are not having cell wall.
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