A cat eats a bird, which ate a caterpillar that chewed on a weed. Which organisms are autotrophs? Which ones are heterotrophs?
What will be an ideal response?
The weed is an autotroph, the cat and bird are heterotrophs.
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Even in the absence of transpiration, some water can move into the roots and partially up the xylem columns. This phenomenon is due to
A. flooding. B. stomatal opening. C. root pressure. D. proton pumps. E. phloem translocation.
Four of the five animals listed below are threatened or endangered. Select the exception
a. whooping crane b. sea otter c. sea urchin d. yellow-bellied glider e. Karner blue butterfly
Which piece of evidence would best support the theory of continental drift?
A. Fossils of seed ferns can only be found on North America and Europe but nowhere else in the world. B. Australia, South America, and Africa all share a similar mammalian fauna due to the lineage being present on Gondwana. C. The reptilian diversity on Earth is very different due to the separation of the continents billions of years ago. D. All of the choices are correct.
Which of the following lack a nucleus and are structurally simple?
a. eukaryotes
b. prokaryotes
c. fungi
d. algae
e. protists