Explain the four features necessary to classify an organism as a vertebrate.

What will be an ideal response?


The answer should include:
1. Presence of a vertebral column
2. Skull that encloses and protects the brain
3. Cartilaginous or bony endoskeleton
4. Large coelom and complete digestive tract

Biology & Microbiology

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The closest relatives of the familiar pine and spruce trees are _____

A) ferns, horsetails, lycophytes, and club mosses B) hornworts, liverworts, and mosses C) gnetophytes, cycads, and ginkgos D) elms, maples, and aspens

Biology & Microbiology

The epiglottis functions during

A) yellowing B) speaking C) breathing D) swallowing

Biology & Microbiology

A population's age structure tracks ____

a. the average age of the members of the population b. how long the population has existed in the area c. the rate at which the population is aging d. the relative numbers of each age e. death rate

Biology & Microbiology

Which functional group is incorrectly matched with its structure?

A) ether: R-CH3 B) amino: R-NH2 C) phosphate: R-PO42- D) carboxyl: R-COOH E) alcohol: R-OH

Biology & Microbiology