Exam 16: Plants, Fungi, and Protists

The international Union for Conservation of Nature announced that 31 percent of cactus species,renowned for their unique forms and beautiful________,are in danger of extinction.

Five cereal crops provide 60 percent of the food energy taken in by the world's human population.These cereals (grains)are rice,maize,wheat,millet,and sorghum.The portion of these crops consumed by humans is actually the seed with its protective coverings from the fruit.These crops are ________ in kingdom ________.

While they may differ in chemical composition,cell walls are often found in

Explain why the evolution of sexual reproduction in aquatic algae would significantly increase the chances of plant diversity on land.