Elaborate leaves called "fronds" are found in which group of seedless vascular plants?
A) mosses B) gymnosperms C) ferns D) green algae
Answer: C
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The event called the Cambrian Explosion resulted in an abrupt increase in
A. geological activity. B. diversity of major animal groups. C. algal diversity. D. the number of days in the year. E. the amount of fish, of a single species, in the seas.
Gap junctions ____
a. seal the spaces between cells b. allow ions and small molecules to pass between cells c. allow plant cells to communicate with each other d. give the cell its shape e. anchor the cell membrane to the cell wall
How has climate change altered the mountain pine beetle?
A) They are being outcompeted by the prairie pine beetle. B) They now have two generations per year. C) They have decreased the average elevation of their distribution. D) Their abundance has increased through lack of predators due to mismatched phenology.
Which statement is NOT true about root adaptations in plants?
A. Some plants have very poorly developed roots or none at all. B. Parasitic plants have root adaptations called haustoria that draw nutrients from the host. C. Bacteria of the genus Rhizobium live in root nodules in legumes, producing available nitrogen that the plant uses. D. Some plants, including orchids, require the presence of fungal symbionts to survive. E. Fungal mycorrhizae depend on plants for the fungus's supply of water and minerals.