1 a. Liverworts
b. Ferns
c. Bryophytes
d. Whisk ferns
e. True ferns
f. Angiosperms
g. Conifers
h. True ferns
2. Having in succession both a sporophyte and a gametophyte generation. These vary in dominance.
3. Presence or absence of vessels; presence or absence of seeds.
4. See text.
5. Dominant sporophyte stage, vascular system, lignin, waterproof cuticle and stomata.
6. Bryophytes -- hardening of structures.
Others -- Strength and support.
7. Similar -- same pigments, same basic life styles, stored starch.
Different -- Vascular plants have vessels.
8. Whisk ferns, club mosses, horsetails, true ferns. Descriptions on pages 497-498.
9. See page 503.
10. See page 499.
11. Angiosperms have seed encased in fruit. Gymnosperms have naked seeds.
12. Angiosperms are considered successful because they are found everywhere, account for 75% of our plant use, and are extremely diverse. Student answers about adaptations and factors will vary.
TO THINK ABOUT
1 a. Conifer
b. Conifer
c. Moss
d. Azolla (aquatic fern)
e. Gymnosperm (conifer)
f. Pine
g. Poppy
2. Bryophytes do not have the support system, nor do they have a method of internal transport.
3. One answer: Bryophytes are extremely sensitive to pollution.
4. One answer: Even the desert has periods of moisture. Some bryophytes dry out and go almost totally dormant for extended periods of time. They are revitalized with water.
5. One answer: Vascular system.
6. No need for continuous water.
7. Answers will vary.
8. Answers will vary.
9. Answers will vary.
10. Answers will vary.
feedback form |
permissions |
international |
locate your campus rep |
request a review copy
Copyright ©2001 The McGraw-Hill Companies.
digital solutions |
publish with us |
customer service |
mhhe home
Any use is subject to the
Terms of Use and Privacy Policy.
McGraw-Hill Higher Education is one of the many fine businesses of the
The McGraw-Hill Companies.