BIOLOGY REVIEW By Oh Whale Out crossing The genetic transmission of a defined heritable characteristic from one group of individuals population crop variety to another This is the most common result of cross pollination Think of the pine cone example Possible question for test would be Why would outcrossing reduce selfing in the population reasoning the wind blows the male cones pollen to another top tree fertilizing the female cones Which is why females are located on the tops of trees and the males are located on the bottom of the tree This process of out crossing is why this reduces selfing in the population Phloem Xylem Explain why removing a strip of bark and the underlying tissue from the entire circumference of a tree would kill it Phloem sugars moves up and down the tree Xylem water and minerals only up Removing the bark removes the functional Phloem which takes away the sugar that go to The roots Roots cannot make sugar They Depend on the leaves to photosynthesize and Bring nutrients to the roots down movement Protostome vs Deuterostome Echinodermata and chordate are the only ones that are deuterostomes might help some Protostomes Deuterostomes Spiral determinate radial indeterminate mouth anus anus mouth Cells are already differentiated undertermined on what it anterior cannot become posterior can be Jeopardy Found this I hope it helps some http www google com url sa t rct j q esrc s source web cd 1 ved 0CCkQFjAA url http 3A 2F 2Fl ocal brookings k12 sd us 2Fkrscience 2Fzoology 2Fclassintro 2Fcl assintrojeo2 ppt ei fcwyU635KaeisQS7wYHYAw usg AFQjCNFQ6gF CJ1HsgQKBI8Df1JUpj16H5A
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