Synapomorphy of choanoflagellates and animals

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Reference no: EM133934925

Questions

1. Which of the following is not a nutritional mode used directly by animals?

A. herbivory

B. omnivory

C. carnivory

D. autotrophy

2. What is a synapomorphy of choanoflagellates and animals?

A. cells with mitochondria

B. chitin, a structural carbohydrate

C. diplontic life cycle

D. collagen, a structural protein

3. The blastopore is a structure that first becomes evident during

A. gastrulation.

B. eight-cell stage of embryo.

C. coelom formation.

D. cleavage.

Based on the most current molecular phylogeny, rank the following from most inclusive to least inclusive.

Ecdysozoan
Bilaterian
Metazoan
Eumetazoan
B. 3, 4, 1, 2

C. 3, 4, 2, 1

D. 4, 3, 2, 1

A. 4, 3, 1, 2

4. One distinction between Porifera (sponges) and all of the other nine animal Phyla we studied is the absence of ___________ in the Porifera.

A. a complete, one-way digestive tract.

B. a circulatory system.

C. true tissues.

D. mesoderm.

Reference no: EM133934925

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