Which sequence represents the most typical order of events in seed germination?
a. shoot cells divide and elongate ? root cells divide and elongate ? seed coat splits ? water imbibition
b. seed coat splits ? water imbibition ? root cells divide and elongate ? shoot cells divide and elongate
c. water imbibition ? seed coat splits ? root cells divide and elongate ? shoot cells divide and elongate
d. water imbibition ? root cells divide and elongate ? seed coat splits ? shoot cells divide and elongate
Ans: c. water imbibition ? seed coat splits ? root cells divide and elongate ? shoot cells divide and elongate
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Cardiac glycosides, molecules causing a drastic effect on vertebrate heart function, are produced as defensive chemicals by plants belonging to
A. the milkweed and dogbane families. B. the mustard family. C. the grass family. D. the poison ivy, oak, and sumac families. E. the bean family.
Which kingdom would include an organism that is multicellular, relies on other organisms for food, and reproduces by spores?
A) kingdom Animalia B) kingdom Fungi C) kingdom Plantae D) kingdom Protista
Choose the one most appropriate answer for each.
A. Barr body B. Histone C. Repressor protein D. Promoter E. Master genes F. Homeotic genes G. Dosage compensation H. Enhancers
If a codon has the sequence CAG, tRNA with which anticodon will bind to it?
A) GTC B) CAG C) GUC D) UGA E) CTG