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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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.
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
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