Starting with the simplest and moving towards more complex, what is the correct evolutionary sequence of animals in regards to the complexity of their nervous systems?
A. sponges - planarians - hydras - annelids - molluscs - fish
B. hydras - sponges - planarians - annelids - molluscs - fish
C. annelids - sponges - hydras - planarians - molluscs - fish
D. sponges - hydras - planarians - annelids - molluscs - fish
E. sponges - hydras - planarians - molluscs - annelids - fish
Answer: D
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Milkweed plants produce a variety of defenses (such as leaf hair and latex-filled canals) to deter herbivores. How can monarch caterpillars circumvent these obstacles? Select all correct choices
A. by mowing hairs off of milkweed leaves B. by cutting the midvein that transports latex through leaves C. by creating channels to divert the flow of latex D. by metabolizing chemical compounds (cardenolides) produced by milkweeds
Thermotogae can grow anaerobically on which of the following?
A. Protein digests and carbohydrates B. Cellulose C. Methane and methanol D. Lignin
Which of the following is true of typical plant development?
a. Growing tips and zones are present throughout a plant's life, and final plant form is not influenced by the environment. b. Plant bodies have a fixed final size, and final plant form is influenced by the environment. c. Final plant form is not influenced by the environment, and growing tips and zones are present throughout a plant's life. d. Growing tips and zones are present throughout a plant's life, and plant bodies do not have a fixed final size. e. Plant bodies do not have a fixed final size, and final plant form is not influenced by the environment.
Menstrual flow results in the discharge of ____
a. the follicle b. the corpus luteum
c. the lining of the uterus d. surface cells from the vagina e. blood from the blood vessels on the outer surface of the uterus