Plants and Algae Most Recently Shared a Common Ancestor 480

question 18

Multiple Choice

Plants and algae most recently shared a common ancestor 480 million years ago,and plants colonized land shortly after that.Light,water,minerals,and dissolved gases surround the whole body of a submerged green alga,and the buoyancy of water provides physical support.What part did plants evolve to absorb gases without drying out on dry land?

• A)pollen
• B)stomata
• C)vascular tissues
• D)cuticle
• E)lignin

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