What does the fossil Archaeopteris tell us about land plant evolution?
A. The ability to produce large woody trunks preceded the evolution of seeds and pollen.
B. The ability to produce large woody trunks was conincident with the evolution of seeds and pollen.
C. Trees with large woody trunks never evolved the ability to produce fern-like leaves.
D. Leaves evolved independently three times in land plants.
Answer: B. The ability to produce large woody trunks was conincident with the evolution of seeds and pollen.
You might also like to view...
Which connective tissue is best at withstanding compression due the elasticity of its matrix?
a. loose connective tissue b. bone tissue c. cartilage d. fibrous connective tissue e. none of these.
Photosystem I initiates the electron transport chain that produces
A. water. B. NADPH. C. glucose. D. NADH. E. ATP.
Hemoglobin contains which element?
a. chlorine b. sodium c. iron d. copper e. magnesium
Aldosterone stimulates the reabsorption of sodium ions here
A) proximal convoluted tubule B) glomerular capsule C) loop of the nephron D) distal convoluted tubule and collecting duct