Only about ____ of the sunlight falling on plant leaves is captured by photosynthesis. 

A. 1%
B. 10%
C. 25%
D. 50%


A. 1%

Biology & Microbiology

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Many anaerobic Gram-negative bacteria are normally found in the duodenum.

Answer the following statement true (T) or false (F)

Biology & Microbiology

What is the difference between cross- and self-fertilization?

A) In cross-fertilization the pollen from one plant is used to fertilize the egg of another plant. B) In cross-fertilization the pollen from one plant is used to fertilize the egg from the same plant. C) In self-fertilization the pollen from one plant is used to fertilize the egg from another plant. D) In cross-fertilization insects are used to pollinate the plants, whereas in self-fertilization the investigator pollinates the plants.

Biology & Microbiology

What is the number of possible unrooted trees for 5 taxa?

A) 5 B) 10 C) 15 D) 20 E) 25

Biology & Microbiology

Who observed that species of organisms on different islands were clearly similar, yet had distinct differences?

What will be an ideal response?

Biology & Microbiology