In a flower, the mature male gametophyte is
a(an)
a. pollen grain.
b. germinated pollen grain.
c. ovule.
d. microspore.
e. sperm cell
B
You might also like to view...
Postzygotic reproductive isolation prevents
A. fertilization. B. formation of gametes by one of the parents. C. male gametes from joining with female gametes. D. All of the answer choices are correct. E. genetic exchange between populations by selecting against hybrid offspring.
The ___________ nuclei are masses of gray matter deep within each cerebral hemisphere, that integrate motor commands to ensure that the proper muscle groups are stimulated or inhibited.
Fill in the blank(s) with the appropriate word(s)
Bacteriostatic agents kill bacterial cells.
Answer the following statement true (T) or false (F)
Foodborne diseases caused by pathogenic Escherichia coli strains are relatively ________ and ________ require hospitalization
a. common / often b. common / rarely c. rare / often d. rare / rarely