Which of the following statements concerning complex multicellular organisms is true?
A. Plants and animals use bulk transport
systems to move gasses and nutrients, but
fungi and algae do not.
B. Bulk transport systems require specialized
organs like a heart to pump nutrients and
dissolved gasses deep into tissues that are
not in contact with the external environment.
C. Bulk transport systems move substances
faster than simple diffusion.
C
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The spines of a cactus and the insect traps of
carnivorous plants are modified leaves. Cacti spines and carnivorous plant insect traps are ______ structures.
a. analogous b. homologous c. recessive d. homozygous e. morphogenic
Which scientist(s) was the first to suggest that the proportion of adenine and guanine differs from one species to
another?
a. Watson and Crick b. Wilkins c. Hershey and Chase d. Chargaff e. Franklin
What happens to the ovary after fertilization in angiosperms?
A. It becomes the fruit. B. It forms the seed coat. C. It becomes food for the embryo inside the seed. D. It dies.
Development occurs:
A) only in non-dividing cells. B) only during growth of the organism. C) throughout the life of the organism. D) only in animals.