Chapter 14, Problem 3SQ

Identify each of the following reproductive barriers as prezygotic or postzygotic.

1. a. One lilac species lives on acidic soil, another on basic soil.
2. b. Mallard and pintail ducks mate at different times of the year.
3. c. Two species of leopard frogs have different mating calls.
4. d. Hybrid offspring of two species of jimsonweed always die before reproducing.
5. e. Pollen of one kind of pine tree cannot fertilize another kind.