Which of the following is not a feature of a seed?
A. Environmental signals such as light or temperature can trigger germination.
B. It contains a protective coat formed from the outer layers of ovule cells.
C. It is a complex structure that allows the embryo to be dispersed to distant sites.
D. The embryo is surrounded by nutritive tissue or has cotyledons that contain nutritive tissue.
E. It contains a large percentage of water to support the embryo.
Answer: E
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Which of the following statements best describes DNA polymerase?
A. It is an enzyme required to produce a primer needed for DNA replication. B. It is an enzyme that catalyzes the addition of nucleotides to the 5? end of a growing DNA strand. C. It is an enzyme that requires the presence of a small double-stranded nucleic acid primer to catalyze the addition of nucleotides to the 3? end of a growing DNA strand. D. It is an enzyme required to glue pieces of DNA fragments together. E. It is an enzyme that polymerizes to the DNA and keeps the replication fork open.
The archenteron of a frog develops into the _____
A) blastocoel B) endoderm C) placenta D) lumen of the digestive tract
An interaction in which one species benefits and the other is not affected is classified as:
A) commensalism. B) coevolution. C) mutualism. D) competition.
Bacteria reproduce asexually, whereas most plants and animals reproduce sexually. Which is the better method?
A) Asexual reproduction, because there are more bacteria than plants and animals. B)Sexual reproduction, because there are more plants and animals than bacteria. C) Asexual reproduction, because binary fission is more efficient. D) Sexual reproduction, because it produces more variation. E) Neither method is better; each is effective in different environments for different kinds of organisms.