Answer the following statements true (T) or false (F)
1. Lichens are monophyletic.
2. In a lichen, the fungus and the symbiotic algae are highly coevolved.
3. Many kinds of ascomycetes and basidiomycetes have lost the ability to reproduce sexually.
4. Some chytrids parasitize protists.
5. Some yeasts have "stripped-down" genomes as small as 200 protein-coding genes.
1. FALSE
2. FALSE
3. TRUE
4. TRUE
5. FALSE
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A house plant that has been placed in the window will grow toward the source of light because auxin ____
a. becomes more concentrated on the illuminated side of the plant b. becomes less concentrated on the illuminated side of the plant c. becomes more concentrated in the roots of the plant d. inhibits the growth of cells on the shady side, so the cells on the sunny side grow faster e. is produced only when the sun shines
Amniotes differ from earlier vertebrates by ____
a. their large size b. their three-chambered heart c. producing eggs in which the young can develop away from water d. the possession of a slimy skin e. having external scales
Which of the following is an example of a cartilaginous joint?
a. ulna connected to the tibia b. humerus connected to the scapula c. leg bone connected to the hip bone d. teeth connected to the jaw e. two vertebrae connected together
How many times could a human female ovulate in her lifetime?
a. about 40 b. about 400 c. about 4000 d. about 40 000