Xerophytes are?
a) land dwellers that are adapted to cope with heavy rains at certain times without preventing transpiration
b) small herbivorous insects that thrive on dry plants
c) plants that are adapted to and tolerate a dry climate with little water
d) plants that use up large quantities of water in a dry environment
Ans: c) plants that are adapted to and tolerate a dry climate with little water
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Can a blue crab find its identical twin?
A. No, spiral cleavage is determinate. B. Yes, crab larvae reproduce via mitosis. C. No, arthropods are deuterostomes, and twinning only occurs in protostomes. D. Yes, the separation of embryonic cells is rare but not lethal.
Most grasses tolerate grazing and actually benefit from it
Indicate whether the statement is true or false
All of the following are true statements about the lymphatic system EXCEPT that
A) the lymphatic system transports carbohydrates from the small intestine to the blood. B) the lymphatic system returns fluids to the bloodstream. C) lymphatic vessels resemble veins because they have valves. D) the lymphatic system helps defend the body against disease.
Water has a molecular weight of 18 g per mole, and glucose has a molecular weight of 180 g per mole. Which masses
of water and glucose would have an approximately equal number of molecules?
a. 1 g of water and 180 g of glucose b. 90 g of water and 9 g of glucose c. 180 g of water and 1 g of glucose d. 9 g of water and 90 g of glucose e. 90 g of water and 90 g of glucose