Which tissue has contractile cells that are joined by intercalated disks, allowing it to contract as a unit?
a. smooth muscle
b. cartilage
c. skeletal muscle
d. cardiac muscle
e. adipose tissue
ANSWER: d
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Indicate whether the statement is true or false.
Where the edge of one match meets another is referred to as
A) a corridor. B) a boundary. C) a shifting mosaic. D) a metacommunity.
Suppose you are a botanist and you discover a plant that has a small free-living gametophyte that requires external water for fertilization and a large free-living sporophyte. The free-living sporophyte eventually releases spores from sporangia on the margins of its leaves. Into which group should you classify this plant?
a. gymnosperms b. angiosperms c. seedless vascular plants d. bryophytes
What is a benefit of multicellularity for slime mold amoebas?
a. self-sacrifice for other amoebas c. sexual reproduction b. ability to move quickly to nutrients d. ability to feed on bacteria