History of Life
This gas was not present in large quantities in Earth’s early atmosphere.
What is oxygen?
This scientist published On the Origin of Species.
Charles Darwin
This shape describes rod-shaped bacteria.
What is bacilli?
This structure helps Paramecium regulate water balance.
What is the contractile vacuole?
This waxy coating helps reduce water loss in plants.
What is the cuticle?
This is the preserved evidence of an organism that lived in the past.
What is a fossil?
Traits inherited from a common ancestor, like a whale’s fin and a bat’s wing, are called:
What are homologous structures?
Gram-positive bacteria appear this color under a microscope.
What is purple?
Diatoms have cell walls made of this material.
What is silica?
Vascular tissue helps plants transport materials over long distances. Name one type of tissue.
What is xylem or phloem?
This time period makes up 90% of Earth’s history.
What is the Precambrian Era?
VESTIGIAL
Bacteria reproduce asexually through this process.
What is binary fission?
Fungi have cell walls made of this polysaccharide.
What is chitin?
These tiny openings in leaves allow gas exchange.
What are stomata?
This model expresses major geological and biological events in Earth’s history.
What is the geologic time scale?
The Miller-Urey Experiment
These dormant structures allow bacteria to survive extreme conditions.
What are endospores?
Fungi that feed on dead organisms are called this.
What are saprobes or saprophytic fungi?
Plants cells whose functions include gas exchange?
What are Parenchyma cells?
The Cambrian explosion occurred during this era. It is the first era of the Phanerozoic Eon. Invertebrate animals were dominant.
What is the Paleozoic Era?
True or False: The wing of a butterfly and the wing of a bat are homologous structures.
FALSE. They are analogous structures
This bacteria can switch between aerobic and anaerobic respiration depending on oxygen availability.
What are Facultative Anaerobes?
Euglenoids are unique because they can be both autotrophic and this.
What is heterotrophic?
Plant cells whose functions are support and transport of materials.
What are Sclerenchyma cells?