True or false: The third trimester of development is characterized by rapid growth, with the fetus quadrupling in size during the last two months
A. true
B. false
B
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Which type of plant signaling molecule is similar in structure to aspirin?
a. abscisic acid b. ethylene c. salicylic acid d. jasmonate e. oligosaccharin
The ____ nervous system consists of the brain and spinal cord and the ____ nervous system consists of nerves.
A. sensory; motor B. central; peripheral C. peripheral; sensory D. sensory; central
In some plants such as mosses and ferns, there is a multicellular stage in the life cycle that is haploid and a different stage that is diploid. What can you conclude from this?
A) The haploid cells must undergo twice as much mitosis in order to produce a diploid stage. B) Haploid cells must undergo mitosis to produce a multicellular haploid stage. C) Meiosis must happen over and over to produce as many haploid cells for a multicellular haploid plant. D) Haploid cells must undergo meiosis to form gametes.
Mendel crossed two pea plants with round seeds. All seeds of the offspring were round. He then crossed a plant with round seeds to a plant with wrinkled seeds and all offspring had wrinkled seeds. Which of the following is true?
A) a mutation occurred B) the plants he used were not true breeding C) wrinkled is dominant D) round is dominant E) the trait does not breed true