Chapter 29 Homework Questions

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Plants evolved from green algae approximately _____ million years ago.

475

Which of these structures is diploid?

D

Which of these represents the sporophyte generation of the moss life cycle?

E This is the young diploid sporophyte.

In moss, _____ produce sperm.

antheridia

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

bryophytes

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

chloroplasts

The conspicuous part of a fern plant is a _____.

diploid sporophyte

_____ are an example of seedless vascular plants.

ferns

Angiosperms are most closely related to _____.

gymnosperms

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

gymnosperms

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

mitosis...mitosis In both, gametes are produced by haploid gametophytes.

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

moisture

Where do fern antheridia develop?

on the underside of the gametophyte

Charophyceans are the green algae most closely related to plants

true


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