Birds are the only group of animals that are endothermic.
a. true
b. false
Ans: b. false
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Genetic material (DNA and RNA) are found in three distinct organelles in eukaryotic cells. What are these organelles and which type of relationship may have lead to their formation?
A. mitochondria, chloroplast, nucleus, parasitic B. lysosomes, mitochondria, chloroplast, parasitic C. nucleus, Golgi body, endoplasmic reticulum, symbiotic D. chloroplast, mitochondria, nucleus, endosymbiotic E. chloroplast, lysosomes, nucleus, endosymbiotic
What are plants that flower only once before they die, normally after two seasons of growth, called?
A. Perennials B. Dicots C. Monocots D. Annuals E. Biennials
What statement best summarizes the evolutionary history of eyes?
A. Eyes evolved once and were slightly modified in different phyla. B. Eyes evolved separately in each phylum from an ancestor with no ability to detect light. C. Light-detection organs can develop with very little developmental constraint. D. Development of light-sensing organs evolved once, but several eye structures evolved separately.
With negative feedback, a change induces a response that _____ that change
a. increases b. reverses