Some invertebrates do not have special respiratory organs and rely on __________ exchange, which involves the
diffusion of gases across the body surface. Fill in the blank(s) with the appropriate word(s).
ANSWER: integumentary
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Which of the following lycophytes is not properly matched to its description?
A. lycopodium: grow low to the ground, have branching stems and leaves that grow in a helical pattern B. selaginella: leaves are held in a single plane giving their branched stems a distinctive appearance; many grow as epiphytes C. quillworts (isoetes): small plants that live along the margins of lakes and streams D. tree-sized lycophytes: possess a vascular cambium; these can still be found today in tropical forests in Africa
How does jasmonic acid contribute to the activation of the wound response in tomato plants?
A. It moves through the phloem of the plant until it reaches the wound site. B. It produces a polypeptide that binds with membrane lipids. C. It binds to enzymes in the gut of the predator. D. It increases the energy available for the plants to fight the predator. E. It signals gene expression, leading to the production of a proteinase inhibitor.
Hibernation in small mammals is an example of what specific phenomenon?
A. hiding B. activity C. torpor D. rest E. sleep
When this energy is reradiated as infrared radiation (heat), it is absorbed by these gases in the atmosphere.
A. greenhouse. B. refrigerants. C. isotopes of oxygen. D. isotopes of hydrogen.