In monocots, the shoot tip is protected by ________, which eventually degenerate(s) once exposed to air
A) cotyledons
B) the hypocotyl
C) a slime layer formed by the shoot cells
D) the epicotyl
E) the coleoptile
E
You might also like to view...
Which scientist(s) discovered the basis for the base-pair rule, which states that the amounts of thymine and adenine are
always equal in all DNA molecules, as are the amounts of cytosine and guanine?
a. Watson and Crick b. Beadles c. Chargaff d. Franklin e. Pauling
Scientific research companies sell kits that allow researchers to produce proteins in test tubes via a process known as "in vitro translation." Which one of following components is NOT needed in these kits?
A) amino acids B) transfer RNA C) DNA D) ribosomes
Which of the following secondary lymphoid organs or tissues filters blood and traps blood-borne microorganisms and antigens?
A) Lymph nodes B) Lymphoid tissues C) Spleen D) All of the above
Low body temperature triggers (A)______, followed by (B)_________. These hormone secretions activate cellular metabolism.
a. (A) reduction of TSH (B) reduction of thyroxin b. (A) reduction of glucocorticoid (B) up-regulation of thyroxin c. (A) up-regulation of glucocorticoid (B) reduction of thyroxin d. (A) up-regulation of TSH (B) up-regulation of thyroxin