What phylum do spiders bees, ticks and pill bugs belong to?
A. Arachnida
B. Arthropoda
C. Chelicerata
D. Crustacea
E. Malacostraca
Answer: B. Arthropoda
Biology & Microbiology
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A flower's _____ has one or more ovaries in which eggs develop, fertilization occurs, and seeds mature
a. pollen sac c. receptacle b. carpel d. sepal
Biology & Microbiology
Which is the closest living relative to a bird?
a. lizards b. crocodiles c. bats d. dinosaurs e. winged insects
Biology & Microbiology
Which aspect of population genetics refers to chance fluctuations of allele frequencies resulting from sampling error and is more prominent in small, isolated populations?
A) founder effect B) mutation C) gene flow D) gene drift E) bottleneck effect
Biology & Microbiology
The Cl- ion has a single negative charge and the atomic number of 17. How many electrons are on its innermost shell?
A) 18 B) 17 C) 9 D) 2
Biology & Microbiology