Most of the water moving through a plant is lost
through
a. osmotic gradients in the soil.
b. transpiration.
c. pressure flow forces in the xylem.
d. photolysis.
e. photosynthesis.
Answer: b
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__________ are body parts that look alike in different lineages but did not evolve in a common
ancestor. Fill in the blank(s) with the appropriate word(s).
During digestion, sodium bicarbonate is released into the small intestine to help neutralize the pH of the acids coming from the stomach. The hormone responsible for stimulating the release of this bicarbonate is called ________
Fill in the blank(s) with correct word
In order to be acted on by sexual selection, what is required of a trait?
A) It must be something that influences mate choice by the opposite sex. B) It must be something that increases survival. C) It must be a male trait. D) It must be a trait that increases fertility.
A sequence database such as GenBank could be used to do all of the following EXCEPT
A) Compare cow and human insulin protein sequences. B) Construct a tree to determine the evolutionary relationships between various bird species. C) Search for genes in a fruit fly that are similar to a human gene. D) Compare patterns of gene expression in cancerous and non-cancerous cells.