Structure of gymnosperms are homologous

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1. How do needle-like leaves also represent adaptations to the cooler, drier climate of the Permian period?

2. In what ways were the evolutionary innovations of the seed and pollen potentially adaptive in the cooler, drier Permian period?

3. What structure of gymnosperms are homologous to gametophytes of the seedless plants?

4. Give two important reasons why the seed plants, rather than other vascular plants (for example, ferns), constitute the most successful part of the earth's vegetation?

5. What is the function of the pollen tube?

Reference no: EM132497111

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