What adaptations did ancient algae have to make as they washed ashore and evolved into land plants?
What will be an ideal response?
Ancient algae evolved waterproof coatings to prevent drying out, vascular tissue to move water from roots to leaves, thick cell walls to stand erect, gametes produced within structures to prevent drying out, and pollen to eliminate the need for water-based sperm transport.
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A loss of 90% of the population in the Pingelap atoll from a typhoon in 1775 resulted in a high percentage of the current population being affected by achromatopsia. As a result, all of these affected individuals _____
a. have normal vision b. are descendants of one of the 20 original survivors c. receive genetic testing and genetic counseling d. have exceptional hearing e. are descendants of the 20 original survivors
All viruses must separate the nucleic acid from the capsid before replication
Indicate whether this statement is true or false.
In the figure 6 to the right, the competitor arrives in 1982. The finch population responds to drought in the presence of a competitor by
A) evolving to have smaller beaks B) adapting to have larger beaks C) character displacement D) A or B E) A and C
Which kingdom contains "extremophiles"?
a. eubacteria b. archaebacteria c. fungi d. protista