Although similar to eukaryotic photosynthetic organisms, cyanobacteria are different because they
A. have only photosystem I not photosystem II.
B. do not have any photosynthetic membranes.
C. do not have chloroplasts.
D. have only photosystem II not photosystem I.
Answer: C
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The Carboniferous period included
A. the development of large coal beds. B. flying insects with wing spans up to 75 centimeters. C. ferns and early plants that grew up to 40 meters in height. D. All of the answer choices are correct. E. sediment-dwelling invertebrates.
CAM and C4 plants likely grow in what type of environment?
A. High altitude B. In water C. Cool D. Hot and arid
Answer the following questions true (T) or false (F)
1. Normal microbiota may cause disease if conditions change in the body. 2. A syndrome is a group of symptoms and signs that collectively characterize a particular disease. 3. All diseases go through the stages known as incubation period, prodromal period, and illness.
Pollination begins when pollen is transferred from the ________ to the ________ of a flower.
A. anther, ovary B. anther, stigma C. anther, receptacle D. synergid, egg E. stigma, embryo sac