Question 31
What adaptive features have
contributed to the success of plants and animals on land? [Chapter 29 and
Chapter 34]
An Overview of Land Plant Evolution and Adaptations (pages
575-582)
1.
Adaptations to life on land are found in four major groups of land
plants: Bryophytes, Pteridophytes, Gymnosperms, and Angiosperms.
2.
Charophyceans are the green algae most closely related to land
plants. Summarize the evidence for this.
3.
Terrestrial adaptations that distinguish land plants from their
algae ancestors are:
a) Apical meristem
tissue
b) Multicellular
embryos
c) Alternation of
Generations
d) Sporangia that
produce walled spores
e) Gametangia
The Origin of Land Plants (pages 582-584)
1.
Land plants evolved from charophycean more than 500 million years
ago.
2.
Alternation of generations in plants may have originated by
delayed meiosis.
3.
Adaptations to shallow water may have predated plants for life on
land.
4.
Plant taxonomists are re-evaluating the boundaries of the plant
kingdom.
5.
The plant kingdom is monophyletic.
Terrestrial Adaptations in Animals (pages 693-695)
1.
Animals have adapted and re-adapted to land environments many
different times through earth’s history.
a) Flatworms have
freshwater, marine, and terrestrial species.
b) Roundworms have
freshwater, marine, and terrestrial species.
c) Segmented worms
have freshwater, marine, and terrestrial species.
d) Molluscs have
freshwater, marine, and terrestrial species.
e) Arthropods have
freshwater, marine, and terrestrial species.
f) Vertebrates have
freshwater, marine, and terrestrial species.
2. We will focus on vertebrates and the amniote egg. Read pages
693 to 695 and summarize the ways in
which the extraembryonic membranes allow vertebrates to lay their
eggs on land.
|
John C. Murphy |
Science |
|
Phone: (815) 436-3200, ext. 2120 |
|
|
jmurphy@learningcommunity202.org |
|
© 2001 Plainfield Community Consolidated School District 202.