Which of the following is not true of sponges?
A. Mesohyl is mostly noncellular and provides
structural support.
B. Choanocytes have flagella that beat in a
coordinated fashion.
C. Sponges are among the most primitive
organisms to have developed reproductive
organs.
D. Gas exchange of oxygen and carbon
dioxide occurs through diffusion.
C
You might also like to view...
Why might predators take more time to recover following a disturbance than herbivores or producers?
a. Recovery time is based on the flow of energy, so herbivores recover first, then producers, and then predators b. Recovery time is based on the flow of energy, so producers recover first, then herbivores and finally predators. c. Recovery time is based on solar cycles, and thus predators are the second group to recover. d. Predators actually recover more quickly than others because of their mobility.
__________ assorts gene pairs of homologous
chromosomes independently of gene pairs on all other chromosomes. Fill in the blank(s) with the appropriate word(s).
Having various types of chlorophylls and accessory pigments for the photosynthetic process
A) allows for a variation in color among plants. B) allows many wavelengths of light to be captured to provide energy for photosynthesis. C) allows light to be harvested specifically in a stepwise manner. D) shifts the equilibrium of photosynthesis toward the formation of products. E) increases the efficiency of the Calvin cycle.
A new influenza strain appears and is spreading rapidly. What measures might be taken by public health agencies to stop the spread?
A) Facilitate access to vaccines. B) Identify and treat people who are infected. C) Educate members of the public about ways to protect themselves. D) Educate the public, promote vaccination, and treat those who are infected. E) Shut down public transportation.