Obligate mutualisms: Lichens
What will be an ideal response?
Mycobiont forms majority of lichen body (= thallus).
Photobiont located at the top of the thallus.
Photobiont can move in response to orientation!
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Which feature, if changed, would NOT abolish M13's utility as a cloning vector?
A) ssDNA genome becoming a dsDNA genome B) loss of genes that make coat proteins C) replacing the segment of non-coding DNA in its genome with an indispensible gene D) switch from lysogenic to lytic lifestyle
Which statement is true?
a. broadcast spawning produces a high percentage of surviving eggs b. broadcast spawners participate in elaborate courtship behaviors c. the offspring of broadcast spawners are vulnerable to predators d. broadcast spawning requires organisms to travel long distances
________ is the process by which internal and external structures of cells and organisms are preserved and maintained in position.
Fill in the blank(s) with the appropriate word(s).
A significant event influencing the rapid
evolution of plants on land after their initial appearance was the a. increase of atmospheric oxygen. b. reduction of ultraviolet radiation penetration through the atmosphere. c. stabilization of global climates. d. increase in soil nutrients. e. merging of land masses