The feeding biology of sponges is referred to as:
a. grazing.
b. filter feeding.
c. carnivory.
d. deposit feeding.
e. omnivory
B
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What major benefits do plants and mycorrhizal fungi receive from their symbiotic relationship?
A) Plants receive enzymes, and fungi receive nitrogen and phosphorus. B) Plants receive increased root surface area, and fungi receive digestive enzymes. C) Fungi receive photosynthetic products in exchange for living in plant root nodules. D) Plants receive nitrogen and phosphorus, and fungi receive photosynthetic products.
A water-vascular system is characteristic of the
phylum a. Arthropoda. b. Annelida. c. Chordata. d. Mollusca. e. Echinodermata
Which of the following statements regarding Q fever is incorrect?
A. The causative agent, Coxiella burnetii, produces resistant endospore-like structures. B. The disease is mild, and most cases go undetected. C. Symptoms include fever, muscle aches, rash, and occasionally pneumonia. D. The causative agent, Coxiella burnetii, is transmitted by lice. E. Humans can be infected from the airborne spread of particles from infected animals.
Why don't plant cells use a contractile ring to divide their daughter cells?
A. Plant cells don't have an actin cytoskeleton. B. Plant cells don't form daughter cells. C. A contractile ring can't "pinch" a cell wall. D. Plant cells don't have plasma membranes.