Why are conifers and cycads considered gymnosperms?
A. The female gametophyte is not completely enclosed in sporophyte tissue at the time of pollination.
B. The ovule forms the seed.
C. The fruit is not fleshy.
D. The pollen is wind dispersed.
E. Pollination and fertilization occur at different times.
Answer: A
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For this problem, you may want to create a Punnett Square on a separate piece of paper. Assume brown eyes are
dominant to blue eyes and dimples are dominant to no dimples. John has brown eyes and his mother has blue eyes. John does not have dimples. Zena has blue eyes and also has no dimples. What are the chances if this couple have children, they will produce a child with blue eyes and no dimples?
a. 0 b. ¼ c. ½ d. ¾ e. There is not enough information provided to solve this problem.
The most plentiful sugar in nature is
a. glucose. b. fructose. c. sucrose. d. lactose. e. glycogen.
Which of the following indicates "reactant"? C6H12O6 + O2 ® CO2 + 6H2O
A. C6H12O6 + O2 B. H2O C. CO2 D. None of the choices is correct.
Which of the following is NOT a characteristic of cellular immunity?
A) The cells originate in bone marrow. B) Cells are processed in the thymus gland. C) It can inhibit the immune response. D) B cells make antibodies. E) T cells react with antigens.