Pollen grains germinate
a. in the style.
b. in the ovule.
c. on the stigma.
d. at the micropyle.
e. in the ovary.
Answer: c
You might also like to view...
Transformation of yeast:
A. requires the yeast cells to be made competent using calcium chloride and heat shock. B. requires adding an enzyme to digest the cell wall, creating a spheroplast. C. occurs any time free DNA is present; yeast cells are naturally competent. D. is not stable for fragments greater than 150,000 bp; only shorter YACs are maintained. E. in yeast spheroplasts occurs naturally and takes up DNA without any additional manipulation.
The place where vibrations are translated into patterns of nerve impulses is the
a. pinna. b. ear canal. c. middle ear. d. organ of Corti. e. tympanum.
Retroviruses are responsible for which of the following conditions?
A) Rous sarcoma B) AIDS C) Feline leukemia D) Mouse mammary tumors E) All of these
A diabetic patient has developed gas gangrene of the right foot. The most likely anaerobe causing this infection is:
a. Clostridium tetani. b. Clostridium perfringens. c. Clostridium botulinum. d. Clostridium difficile.