Diversity of Life Answers

Which plant structures are common to all angiosperms?

Choose the word that best completes each sentence.

Choose the word that best completes each sentence.

A cycad plant, like the one pictured, is an example of a gymnosperm. What makes a gymnosperm different from an angiosperm?

Identify the group of animals that includes only vertebrates.

Black widow spiders are considered the most venomous spiders in North America. They are roughly 1.5 inches long. Black widows have a life cycle of one to three years.Is a black widow spider a vertebrate or an invertebrate? Be sure to justify your answer.