Cotyledons and endosperm both provide nutrition. What is the difference between them?
A) Cotyledons provide nutrition for the developing embryo; endosperm provides nutrition for the young seedling.
B) Endosperm provides nutrition for the developing embryo; cotyledons provide nutrition for the young seedling.
C) Cotyledons are found only in flowering plants; endosperm is found only in young ferns.
D) Endosperm is found only in monocots; cotyledons are found only in dicots.
E) Endosperm is always photosynthetic; cotyledons are usually not.
B
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The first known hominin species to leave
Africa was
a. Homo sapiens b. Homo erectus c. Homo habilis d. Australopithecus afarensis e. Homo neanderthalensis
If mitochondria were deprived of oxygen:a
cellular respiration would cease. b. ATP synthesis would cease. c. cells would eventually die. d. cellular respiration and ATP synthesis would cease. e. cellular respiration and ATP synthesis would cease and the cells would eventually die.
A good date for Australopithecus afarensis:
A. 1 mya B. 2.5 mya C. 3.6 mya D. 4 mya E. 7 mya
Inherited genetic information is coded in molecules of _____.
A) RNA B) DNA C) proteins D) amino acids