General Biology Questions

Fill In the Blank: Use the below terms to complete the following paragraph. Four major features distinguish the embryos of chordates from those of all other animals: a hollow dorsal (#4) _______ _________, a(n) (#5) __________ with slits in its wall, a(n) (#6) _________, and a tail that extends past the anus at least during part of their lives. In some chordates, the (#7) _____ chordates, the notochord is not divided into a skeletal column of separate, hard segments; in others, the (#8) _________, it is. Invertebrate chordates living today are represented by tunicates and (#9) ______, which obtain their food by (#10) _____ ______; they draw in plankton-laden water through the mouth and... click for more

General Biology Questions

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... click for more

General Biology

The platypus and the spiny anteater are examples of which mammalian group? a. marsupials b. monotremes c. placentals d. hominids Almost all invertebrate chordates are a. predators b. parasites c. filter feeders d. scavengers Which of the following is not a characteristic chordate feature? a. a pharynx b. a notochord c. a nerve cord d. a pseudocoelom Which of the following is not a subphyla of the phylum Chordata? a. Urochordata b. Hemichordata c. Cephalochordata d. Vertebrata The duck-billed platypus a. passes gametes, feces, and urine... click for more

General Biology

Mammals alone a. have hair and mammary glands b. have a four-chambered heart c. have the ability to regulate body temperature d. exhibit parental care of the young Genetic and immunological evidence show that the greatest differences occur between human populations native to ______ and all other human populations. a. Africa b. Asia c. Australia d. Europe There are currently about ______ mammalian species on the endangered species list. a. 30 b. 300 c. 3,000 d. 3,000,000 Only the anatomically modern humans and others of their lineage are classified as a. ant... click for more

General Biology

1. How long can Hagfish go without eating? A. 1 month B. 3 months C. 5 months D. 7 months 2. How is Hagfish sex influenced by the seasons? A. They have sex in the spring only B. They change sexes with the seasons C. Seasons have no effect D. None of the above 3. Do Hagfish skeletons contain bone? A. Yes B. No 4. What does "Agnatha" mean? A. No gills B. Without AIDS C. Jawless D. No fins 5. How many species of Lampreys are there? A. 10 B. 50 C. 100 D. 75 6. What does "Andomous" mean? A. Hatch in freshwater and migrate to the oceans, then return to freshwater to spawn B. Romantic C. Promiscuous D. Sterile 7. When were Sea Lampreys first int... click for more