Match the situation to the correct transport described.
1. a dog being dragged into a bathtub against its will
2. a child eating a doughnut
3. a dog pulled on a wagon through a spring loaded door
4. a woman drinking tea
5. a crowded roomful of people gradually standing up, wandering around, and leaving the room
a. facilitated diffusion
b. pinocytosis
c. active transport
d. passive diffusion
e. phagocytosis.

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.