X is present in all eukaryotic cells except
mammalian RBC, sieve tube cells of phloem and tracheids and vessels of xylem. X
is ________.
A Nucleus
B Endoplasmic reticulum
C Mitochondrion
D Chloroplast
X is present in all eukaryotic cells except
mammalian RBC, sieve tube cells of phloem and tracheids and vessels of xylem. X
is ________.
A Nucleus
B Endoplasmic reticulum
C Mitochondrion
D Chloroplast