Purchase Solution

General Biology Questions

Not what you're looking for?

Ask Custom Question

Birds descended form (#33) ____ that ran around on two legs some 160 million years ago. All birds have (#34) ______ that insulate and help get the bird aloft. Generally, birds have a greatly enlarged (#35) ____ to which flight muscles are attached. Bird bones contain (#36) ____ _____, and air flows through sacs, not into and out of them, for gas exchange in the lungs. Birds have a large, durable (#37) ____ - _____ ______ that pumps oxygen -poor blood to the lungs, and oxygen-rich blood back to the heart and to the rest of its body, just as you do. Many birds display (#38) ____ behavior: a recurring pattern of relocation between two places in response to environmental rhythms. Birds also lay hard-shelled (#39)_______ eggs, have complex courtship behaviors, and generally nurture their offspring.
There are three groups of existing mammals: those that lay eggs (examples are the (#40) _______ and the spiny anteater), those that are (#41) ________ (examples are the opossum and the kangaroo), and those that are (#42) ______ mammals (there are more than 4,500 species of these). Mammals regulate their body temperature, have a (#43) _____-chambered heart, and show a high degree of parental nurture. Most mammals have (#44)______ as a means of insulation and mammalian mothers generally suckle their young with milk.

Terms to be used above:
A. amniote
B. migratory
C. feathers
D. platypus
E. four
F. pouched (marsupials)
G. reptiles
H. air cavities
I. hair
J. sternum (breastbone)
K. four-chambered heart
L. placental

Purchase this Solution

Purchase this Solution


Free BrainMass Quizzes
Creating a Birth Plan

Preparing for a birth and want to make sure that you're including all the right information? Use this quiz to get on the right track and check your birth plan knowledge!

Feeding Babies

Do you know the science behind feeding babies? Test your knowledge with this quiz.

Parts of the Brain

This quiz will test your knowledge on different areas of the brain.

The Transfer of Energy in an Ecosystem

This quiz will assess your knowledge of how energy is transferred in an ecosystem and the different levels of trophic organization.

BIOLOGY

Basics in biology