1 Collegedata.com says, âThe College Board reports that the average cost of room and board in 2014â2015 ranged from $9,804 at four-year public schools to $11,188 at private schools,â but doesnât break down whatâs room and whatâs board.2  A USA Today article quotes the same figures. Collegedata.com says, âThe College Board reports that the average cost of room and board in 2014â2015 ranged from $9,804 at four-year public schools to $11,188 at private schools,â but doesnât break down whatâs room and whatâs board. 2  A USA Today article quotes the same figures.
B. Leaves is a modification into the spine in a cactus plant. they are modified leaves. Being narrow and sharp not only helps defend the plant but also the reduced surface area helps limit water loss. [ [ ] ]. Expert answered| patmarone |Points 5452|.
Unlike most other spiny succulents, these areoles are independent structures not integrated into the stem. The benefit to the plant: If an areole is detached, the stem is not damaged and water inside the stem is preserved. Spines: Spines help the cactus in several ways.rystals in the hypodermis of some plants deter small animals from foraging on the plant. Areoles: New growth, spines, flowers, and glochids originate from pad-like structures on the cactus stem named areoles.