A bony skeleton, an operculum, and a swim bladder would be found in which group?
a) reptiles
b) sharks
c) amphibians
d) ray-finned fishes
e) mammals
Ans: d) ray-finned fishes
You might also like to view...
Why is calcium necessary for muscle contraction?
A. Calcium is needed to activate troponin so that tropomyosin can be moved to expose the myosin-binding sites on the actin filament. B. Calcium is needed to allow the muscle fiber to become depolarized. C. Calcium functions as a neurotransmitter and is released from the motor neuron. D. Calcium is needed to cock the myosin head so that it can form a cross-bridge with actin. E. Calcium is needed to detach the myosin from the actin.
The ribs and sternum are considered to be part of ____
a. both the axial skeleton and the appendicular skeleton b. the axial skeleton only c. neither the axial skeleton nor the appendicular skeleton
d. the appendicular skeleton only e. the axial or appendicular skeleton depending on the animal
Habitat complexity can support
a. complex life histories. b. increased biodiversity. c. higher productivity. d. more different species in an area. e. All of the above.
Which would create a more acute dietary shortage for human beings: the loss of monocot crops or the loss of dicot crops?
What will be an ideal response?