Which of the following correctly describes the process of sexual reproduction in flowering plants? a. a sperm cell in pollen receives water and sunlight and grows into a new organism independently. b. a sperm cell in pollen combines with an egg cell in the ovule to produce a new organism. c. a plant is cut and a new growth forms in the area where it was damaged. d. a part of a single plant produces an offspring that

Based on the data in your tables, did the light-colored moths have a higher or lower survival rate after the industrial revolution?

Which locations on the map are low-pressure areas? a b c d e

Female luna moths (actias luna) attract males by emitting chemical signals that spread through the air. a male hundreds of meters away can detect these molecules and fly toward their source. the sensory organs responsible for this behavior are the comblike antennae visible in the photograph shown here. each filament of an antenna is equipped with thousands of receptor cells that detect the sex attractant. based on what you learned in this chapter, propose a hypothesis to account for the ability of the male moth to detect a specific molecule in the presence of many other molecules in the air. what predictions does your hypothesis make? design an experiment to test one of these predictions.