Angiosperms use which temporary reproductive structures that are not present in any other group of plants?
A. cones
B. carpels
C. receptacles
D. flowers
E. seeds
D. flowers
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Lakes can be formed from both geological and nongeological activity
Indicate whether the statement is true or false
When signal molecules bind to two tyrosine kinase receptors, the receptors move closer to each other
and form a monomer. __________________ Indicate whether the statement is true or false.
The inheritance of curly hair illustrates incomplete dominance. When a curly haired individual reproduces with a straight-haired one, the children all have wavy hair. What offspring would be produced, in what proportions, when two people with wavy hair
reproduce? What will be an ideal response?
T cells that undergo positive and negative selection ensure that
a. mature T cells only react strongly with foreign antigens. b. mature T cells react with foreign and self antigens. c. mature T cells react strongly with foreign antigens or do not react at all. d. mature T cells react strongly with self antigens.