A plant seed is formed from: a fertilized egg
growth of an egg
growth of a spore
a mature pollen

Explain the significance of the increased cell specialization of the volvocine line

Which of the following is a common response to cell signaling?

8) animals respond in various ways to stimuli detected through their senses. some of these responses are stimulated by the presence of danger. which of these animal responses is the best example of a response to an immediate threat? a) a rooster crows every morning at the first sign of light. b) as something approaches an octopus, it shoots a cloud of ink. c) from late fall until spring, bears hibernate to preserve energy. d) a dog is getting hot in the sunlight, so he moves to a shaded area.