Reptiles are better adapted to life on land than are amphibians. Which external characteristic would a reptile have to lose to make it roughly externally equivalent to an amphibian in terms of ability to tolerate dry land?
A. scales
B. vertebral column
C. eyelids
D. limbs
A. scales
You might also like to view...
Which of the following are cartilaginous fish?
A. lampreys and lungfish B. sharks and rays C. caecilians and coelecanths D. hagfish and lungfish
Assume that in a series of experiments, plants with round seeds were crossed with plants with wrinkled seeds and the following offspring were obtained: 220 round and 180 wrinkled
(a) What is the most probable genotype of each parent? (b) What genotypic and phenotypic ratios are expected? (c) Based on the information provided in part (b), what are the expected (theoretical) numbers of progeny (400 total) of each phenotypic class?
Exotoxins such as botox and other are made of:
A. Protein B. Lipids C. Carbohydrate D. Lipopolysaccharide
Which of the following statements is correct?
A) The simpler the organism, the less DNA it has. B) The more complex the organism, the higher the percentage of the non-coding DNA. C) The more complex the organism, the more DNA it has. D) The simpler the organism, the lower the percentage of the non-coding DNA.