Organelles that contain DNA include
a. mitochondria.
b. chloroplasts.
c. ribosomes.
d. lysosomes.
e. mitochondria and chloroplasts.
E
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In 1938, scientists found a population of coelacanths in the Indian Ocean. This fish species is considered a “living fossil” and appears not to have changed morphologically for 80 million years. This discovery supports the ___________ model of evolution.
A. gradualism B. punctuated equilibrium C. adaptation D. natural selection E. common descent Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? Gather Content · What do you already know about punctuated equilibrium? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Invasive Eurasian grass species can outcompete native North American grasses through
A. secretion of allelochemicals. B. producing more viable seeds. C. producing seeds year-round. D. avoiding grazing animals. E. faster seed germination.
A marine biologist is conducting research on animals that have a lophophore and two calcified shells. Based on this information, this animal must belong to the phylum
A. Mollusca. B. Phoronida. C. Ectoprocta. D. Bryopoda. E. Brachiopoda.
Which eukaryotic supergroup includes red algae, green algae, and land plants?
a. Archaeplastida b. Excavata c. Rhizaria d. Chromalveolata