A true-breeding pea plant with smooth pods is crossed to a true-breeding pea plant with constricted pods. The offspring of this cross all have smooth pods. This indicates that
_____ constricted is dominant and smooth is recessive.
_____ smooth is dominant and constricted is recessive.
_____ constricted and smooth are not alleles.
_____ constricted and smooth are variants of the same gene.
_____ constricted is dominant and smooth is recessive.
__X__ smooth is dominant and constricted is recessive.
_____ constricted and smooth are not alleles.
__X__ constricted and smooth are variants of the same gene.
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The process by which pollen is transferred to the ovule is called
(a) transmigration. (b) fertilization. (c) pollination. (d) all of the above.
During osmosis, water will move from a ____concentration of water to a ___ concentration of water.
a. low; high b. high; low c. high; equilibrium d. low; equilibrium
Which of the following is NOT true of plant
hormones?
a. they are active in an adult plant body b. they are signaling molecules c. they produce effects only at high concentrations d. they are produced only in certain regions of the plant e. all of these are NOT true of plant hormones
Secondary succession occurs ____
a. after a fire b. on a new sand dune c. on bare rock d. immediately after the formation of a man-made lake e. on a newly-formed volcanic island