When tropical forests are cut for agriculture, they often do not produce highly productive crop growth
What is probably limiting the growth of a crop in the tropical forest?
a. Sunlight.
b. Rainfall.
c. Carbon dioxide
d. Soil nutrients.
e. Bacteria.
D
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Ronald Fisher developed a critical idea for the modern synthesis of Darwin and Mendel. What is the basis of this synthesis?
A. Mendel was correct in that most traits are discrete. B. Multiple genes can explain the continuous nature of most observed traits. C. Darwin was incorrect in how natural selection influences discrete traits like Mendel observed. D. Mendel and Darwin both missed the importance of population growth as described by Malthus.
Echinoderms are classified as Bilateria, but although they start out as bilateral larvae, they change into radially symmetrical adults. You might hypothesize that their genes controlling the development of radial symmetry are
A. different from those controlling development of symmetry in all other radially symmetrical animals. B. similar to genes controlling body form in Porifera. C. similar to genes controlling body form in Ctenophora. D. similar to genes controlling body form in Lophotrochozoa. E. similar to a common set of genes controlling body form in Ctenophora and Lophotrochozoa.
Archaeal membranes contain which of the following lipids?
A. Glycolipids B. Sulfolipids C. Phospholipids D. All of the choices are correct.
Which of the following is not considered an accessory organ of the digestive system?
A. gallbladder B. small intestine C. pancreas D. salivary glands E. liver