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Questions and Answers
What characteristic distinguishes nonvascular plants from vascular cryptogams?
What characteristic distinguishes nonvascular plants from vascular cryptogams?
- Production of seeds
- Presence of vascular tissue (correct)
- Ability to retain water better
- Adaptation to living on land
What was one strategy for nonvascular plants to survive temporary dry spells?
What was one strategy for nonvascular plants to survive temporary dry spells?
- Large, compact, multicellular body
- Evolution of drought-resistant spores (correct)
- Waterproofing cuticle
- Coordination of gamete production with moisture
What advantage does a large, compact, multicellular body provide for nonvascular plants?
What advantage does a large, compact, multicellular body provide for nonvascular plants?
- Retains water better (correct)
- Allows for swimming sperm
- Facilitates seed production
- Enables adaptation to living on land
What adaptation began over 450 million years ago in certain green algae?
What adaptation began over 450 million years ago in certain green algae?
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Which group of plants possesses both vascular tissue and seeds?
Which group of plants possesses both vascular tissue and seeds?
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Study Notes
Characteristics of Nonvascular Plants
- Nonvascular plants lack vascular tissue, distinguishing them from vascular cryptogams.
Survival Strategies
- One strategy for nonvascular plants to survive temporary dry spells is to dry out and revive when water becomes available.
Advantages of Body Structure
- A large, compact, multicellular body provides nonvascular plants with the advantage of being able to conserve water and protect themselves from environmental stress.
Evolution of Adaptations
- Over 450 million years ago, certain green algae began to develop adaptations that would eventually lead to the evolution of land plants.
Characteristics of Seed Plants
- The group of plants that possesses both vascular tissue and seeds is known as seed plants.
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