Which vertebrates exhibit a "flow-through" respiratory system?
A. birds and fishes
B. amphibians
C. birds
D. fishes
E. mammals
Answer: A
Biology & Microbiology
You might also like to view...
Sudden nutrient perturbations in an environment generally ________ the overall prokaryotic diversity
A) increase B) decrease C) maintain D) replicate
Biology & Microbiology
Which neurotransmitter is not an amino acid derivative?
A) GABA B) serotonin C) histamine D) dopamine E) acetylcholine
Biology & Microbiology
Newtons 2nd law of motion
What will be an ideal response?
Biology & Microbiology
Mycorrhizae, specialized symbiotic associations between the roots of plants and fungi, are characteristic of
A. about 90% of all plants. B. all plants. C. about 40% of all plants. D. about 60% of all plants. E. about 20% of all plants.
Biology & Microbiology