What bathygraphic feature is sometimes thought to be created by turbidity currents in the ocean?
a. Abyssal plains
b. Sea mounts
c. Submarine canyons
d. Ocean basins
c
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A farmer decides not to reseed one of his agricultural fields for a year. Which of the following
is(are) characteristics of plants that will grow in the field during this period?
a. plants with a narrow ecological niche b. plants that have very specific resource requirements c. opportunistic plant species d. plants that are pioneering and have slow rates of growth
Describe Lamarck’s four most important ideas that influenced Darwin’s evolutionary theory
What will be an ideal response?
Some dogs have erect ears; others have drooping
ears. Some dogs bark when following a scent; others are silent. Erect ears and barking are due to dominant alleles located on different chromosomes. A dog homozygous for both dominant traits is mated to a droopy-eared, silent follower. The expected phenotypic ratio in the F1 generation is a. 9:3:3:1. b. 100 percent of one phenotype. c. 1:1. d. 1:2:1. e. none of these.
Clusters of chlorophyll and accessory pigments are called ________.
A. the Golgi apparatus B. chloroplasts C. photosystems D. cristae E. photosynthetic membranes