Page 17 - SCERT Kerala State Syllabus 8th Standard Basic Science Textbooks English Medium Part 1_Neat

Nucleoplasm
It is the fluid part of the nucleus.
Nucleolus and chromatin
Nucleolus reticulum are seen here. Nuclear membrane
They are spherical bodies, It is a double layered
that play a major role in the membrane that covers the
synthesis of ribosomes. nucleus.

Nuclear pore
Nuclear pores are pores in Chromatin reticulum
the nuclear membrane. They
help in the conduction of They are seen as a network
materials to and from the in the nucleoplasm. They
nucleus. carry genes.
Illustration 1.3

Have you understood the different parts of the nucleus and their
functions? Now complete the table given below.
Part
Peculiarity

Table 1.1

Prokaryotes and
eukaryotes

In the cells of bacteria, cyano
bacteria and mycoplasma, no
nucleus is seen. These organisms
are called prokaryotes.

But in the cells of amoeba, animals
Isn't it
surprising and plants, a well defined nucleus
that cells exist even covered by membrane is seen.
without a nucleus? These organisms are called
eukaryotes.

16 Basic Science VIII