Which characteristic is associated with eudicots?
a. a single cotyledon
b. three-fold flower symmetry
c. trisulcate pollen
d. scattered vascular tissue
c. trisulcate pollen
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What type of thinking is required?
What will be an ideal response?
On very wavy rocky shores, mussels will occupy the ____ zone without being affected too much by predation
a. lower intertidal b. upper intertidal c. middle intertidal d. supratidal e. splash
Which situation is an example of sexual selection?
A. Cheetahs experience a population bottleneck. B. Female butterflies have a higher survival rate than male butterflies. C. Peahens choose to mate with peacocks that have the brightest tails. D. Bacteria evolve resistance to antibiotics.
Which of the following techniques is used to collect fetal cells during pregnancy for genetic testing?
A) testcross B) dihybrid cross C) amniocentesis D) pedigree analysis