Which of the following is true of the cells of a
Choanoflagellate colony?
a. each cell is genetically unique
b. each cell is genetically identical
c. each cell has a different chromosome
number
d. each cell performs the same function as the
other cells
e. each cell has the ability to switch their sex
from male to female and back again
B
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Why is fertilization in flowering plants called
double fertilization?
a. it takes two pollen grains to fertilize a single ovule b. two ovules must be fertilized to form a single seed c. two cells in the ovule are fertilized, the egg and the endosperm mother cell d. one pollen grain fertilizes two ovules e. it takes the efforts of two flowers (male and female) to produce seeds
The resurrection plant
a. is a species of Selaginella. b. grows in the desert Southwest of the United States. c. is a member of the phylum Lycophyta. d. all of the above.
Fill in the blanks to complete the following statements. ?__________________ antibiotics inhibit the replication of microorganisms and prevent the growth of the organism without destroying them
Fill in the blank(s) with correct word
The earliest examples of biotechnology included the
A) careful examination of patterns of bacterial inheritance. B) study and treatment of genetic diseases in people. C) use of selective breeding to provide better, more nutritious food. D) use of genetic markers to learn more about genetic inheritance.