GLY1102 Topic 9

During the ______, angiosperms began overcoming non-flowering plants as the dominant land plants.
Cretaceous Period
The earliest vascular plants date back to the ______ Period.
Silurian
The ancient group of conifers known as Araucariaceae surfive today in natural habitat and are most common in this region of the world.
The Southern Hemisphere
High-browsing _____ declined markedly between the Late Jurassic and Early Cretaceous.
Sauropods
For most of Earth history, the land has been virtually void of all plant life.
True
_______ plants are those lacking specialized cells or the movement of nutrients and water.
Non-vascular
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The elevation above which trees cannot grow because of snow and very cold temperatures is known as the ______.
Tree line
_______ are cone-bearing gymnosperms with seeds resting on the projecting scales of their cones.
Conifers
The first large forests of vascular plants filled wetlands during the _____ Period.
Devonian
Fossil fruit has never been in Mesozoic sedimentary rocks.
False
______ are seed-producing plants where the seed is exposed (not enclosed, e.g., woody scales of a pine cone).
Gymnosperms
All the modern conifer families were already members of the Early Mesozoic landscape.
True
Spores are produced in structures called _____ (e.g., the prominent brown spots on the underside of fern fronds).
Sporangia
Sphagnum or peat moss is an example of a ______.
Bryophyte
The angiosperm reproductive system is enhanced by insect pollination.
True
_____ grow in wet or damp areas often carpeting rocks and decaying wood on the forest floor.
Sphagnum mosses
Seed ferns are among the earliest speed-producing plants.
True
An ancient group of conifers is the family ______ that still grows today in the Southern Hemisphere.
Araucariaceae
This group of plants that was extinct except in Asia but later reintroduced to the rest of the world by man:
Ginkgoes
During the _____, angiosperms began overcoming the non-flowering plants as the dominant land plants.
Cretaceous Period
_______ are seedless, spore-producing, vascular plants whose reproductive system ties them to most environments.
Ferns
Ferns are ancient plants dating back long before dinosaurs.
True
Our solar system is about ________ years old.
4.6 billion
Simple non-vascular plants like _______ were among the earliest land plants.
Bryophytes
Seedless vascular plants were the earliest land plants.
True