Cytoplasmic Streaming and Animal Anatomy PDF

## Cytoplasmic streaming within the boundaries of a cell membrane for locomotion is a type of structure used by some protists called: - pseudopodia - cilia - flagella - syncytia - zooxanthellae ## The anatomical plane that divides an animal into dorsal and ventral is: - frontal plane - transverse p...

## Cytoplasmic streaming within the boundaries of a cell membrane for locomotion is a type of structure used by some protists called: - pseudopodia - cilia - flagella - syncytia - zooxanthellae ## The anatomical plane that divides an animal into dorsal and ventral is: - frontal plane - transverse plane - bilateral plane - sagittal plane ## A clade with a single common ancestor, but does not include all descendant species is - monophyletic - paraphyletic - polyphyletic - synapomorphic ## A colony of rabbits has a large variation in tooth size caused by a gene with 2 alleles. The rabbits can swim across the river, and join another rabbit colony, and interbreed with them. The mechanism of evolution that may operate in this example is: - synapomorphy - genetic drift - natural selection - gene flow ## Which of the following is one of Darwin's 2 inferences about natural selection? - traits are inherited from parents to offspring - adaptive traits accumulate over generations - populations vary in their traits - there is a natural tendency for populations to grow ## One hypothesis regarding the origin of multicellular animals describes a multinucleate cell subdividing its cytoplasm. This is: - synapomorphic hypothesis - colonial hypothesis - cnidarian hypothesis - syncytial hypothesis - histolytical hypothesis