The only group of oxygenic phototrophic bacteria are the
A) green nonsulfur bacteria.
B) Chloroflexi.
C) Cyanobacteria.
D) Chlorobi.
Answer: C
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In flowering plants, a mature male gametophyte contains _____
A) two haploid gametes and a diploid pollen grain B) a generative cell and a tube cell C) two sperm nuclei and one tube cell nucleus D) two haploid microspores E) a haploid nucleus and a diploid pollen wall
An animal cell placed in a hypertonic solution will swell and perhaps burst
Indicate whether the statement is true or false.
Although Earth’s ecosystems are remarkably diverse in their characteristics, they all run on energy captured by ____
a. autotrophs b. heterotrophs c. consumers d. decomposers e. detritivores
The sense organ in Figure 43-1 could be found in:
a. the semicircular canal of the human ear and in the lateral line organ of fish.
b. the cochlea of the human ear and the semicircular canal of the fish ear.
c. the semicircular canal of the human ear and the statocyst of invertebrates.
d. the utricle and saccule of the human ear and the statocyst of invertebrates.
e. the lateral line of fish and the statocyst of invertebrates