Why Have Biologists Hypothesized That the First Land Plants Had

question 40

Multiple Choice

Why have biologists hypothesized that the first land plants had a low, sprawling growth habit?

• A) They were tied to the water for reproduction, thus needing to remain in close contact with the moist soil.
• B) The ancestors of land plants, green algae, lacked the structural support to stand erect in air.
• C) Land animals of that period were small and could not pollinate tall plants.
• D) There was less competition for space, so they simply spread out flat.

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