Bio 122 ch 29 How Plants Colonized Land

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Which of these characteristics is shared by algae and seed plants?


Angiosperms are most closely related to _____.


Which of these was the dominant plant group at the time that dinosaurs were the dominant animals?


Plants evolved from green algae approximately _____ million years ago.


_____ are an example of seedless vascular plants.


The living plants that are most similar to the first plants to bear gametangia are the _____.


The closest algal relatives of land plants are _____.


Which of the following traits was most important in enabling the first plants to move onto land?

the development of sporopollenin to prevent desiccation of zygotes

In moss, _____ produce sperm


The sperm produced by mosses require _____ to reach an archegonium.


In mosses gametes are produced by _____; in ferns gametes are produced by _____.

mitosis….. mitosis

In seedless plants, a fertilized egg will develop into _____.

a sporophyte

The diploid generation of the plant life cycle always _____.

produces spores

Most bryophytes, such as mosses, differ from all other plants in that they _____.

lack true leaves and roots

In contrast to bryophytes, in vascular plants the dominant stage of the life cycle is the _____.


What evolutionary development allowed plants to grow tall?

lignified vascular tissue

During the Carboniferous period, forests consisting mainly of _____ produced vast quantities of organic matter, which was buried and later became coal.

ferns and other seedless plants

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