A student is observing a cell under a compound microscope. The student has been asked to list an evidence that can be used to determine if the cell belongs to kingdom Plantae or
kingdom Animalia. Which organelle could be used to determine the correct placement of
the cell?

A. ribosome
B. nucleus
C. mitochondria
D. cell wall

Based on the observation that only male crickets produce a song, you hypothesize that a male's song is a form of communication to potential mates. you set up a simple experiment to test this hypothesis. in the laboratory, you place a male snowy tree cricket in enclosure a, which is adjacent to enclosureb. in enclosure b, you place other insects, one at a time, and observe their responses to the male's song. the enclosures are designed so that the two insects being tested cannot see or smell each other, but sound is transmitted from enclosure a to enclosureb.