If stage micrometer 35 scale coincides with ocular meter 100 using 0.1mm stage micrometer. What would be the exact distance b/w to ocular meter grade in µm?
a) 250µm
b) 25µm
c) 2500 µm
d) 2.5 µm
Cell Wall and Plasma Membrane:
The cell wall was discovered by ……..in1665 earlier than protoplast.
a) Laevonhoeke
b) Robert Hooke
c) Robert Brown
d) Carlos Linnaeus
Cell wall is secreted by which of the following?
a) cytoplast
b) mitochondria
c) protoplasm
d) endoplasmic reticulum
Cell walls of neighboring cells are held together by an intercellular substance called……..
a) middle lamella
b) inter lamella
c) plasma membrane
d) plasmodesmata
Element necessary
for the middle lamella is……..
a) calcium
b) potassium
c) copper
d) zinc
