What do gymnosperms and angiosperms have in common?

A) Flowers
B) Seeds
C) Spores
D) None of these


B

Biology & Microbiology

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Which of the phylogenetic trees above best demonstrates cladogenesis?



A. Tree 1
B. Tree 2
C. Tree 3
D. Both Tree 2 and Tree 3
E. Both Tree 1 and Tree 2

Biology & Microbiology

Which of the following can cause anemia?

a. red blood cells in short supply b. abnormally shaped blood cells c. a low iron diet d. heavy menstrual periods e. all of these can cause anemia

Biology & Microbiology

In what part of the skin is loose connective

tissue found?

a. epidermis b. dermis c. hypodermis d. more than one e. none of these

Biology & Microbiology

A researcher detects an increase in the amount of natural killer cells in a laboratory rat and concludes that ________

A) the rat has, or recently had, a viral infection B) the rat does not have any cancerous tumors C) the rat's lymphatic system is not functioning properly D) the rat's internal innate defenses are weakened

Biology & Microbiology