Four of the following statements are typically true of placoderms. Which one is the exception?
a. They gave birth to live young.
b. They had jaws.
c. They had teeth.
d. They had paired pelvic fins.
e. They had paired pectoral fins.
ANSWER: c
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Based on the phylogeny shown, which characteristic is homoplastic?
A. tree
B. needles
C. flowers
D. seeds
Clarify Question
· What is the key concept addressed by the question?
· What type of thinking is required?
· What key words does the question contain and what do they mean?
Gather Content
· What do you already know about cladistics?
Consider Possibilities
· Consider the different answer options. Which can you rule out?
Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer?
Reflect on Process
· Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
What follows from the fact that reabsorption of salt increases the osmolarity of the blood compare with the filtrate?
What will be an ideal response?
Genomic anticipation refers to observations that a genetic disorder occurs at an earlier age in successive generations, whereas genetic imprinting occurs when gene expression varies depending on parental origin
Indicate whether the statement is true or false
Which phyla lacks a vascular system?
A. Arthrophyta B. Pterophyta C. Gnetophyta D. Hepaticophyta E. Ginkgophyta