Answer:
(i)
Plasma membrane It acts as a semi permeable membrane and allows only selective
substances to pass through it.
(ii) Chromosomes To carry hereditary characters from one
generation to another.
(iii) Lysosomes The breakdown of unwanted macromolecules
is the main function of these organelles.
(iv) Ribosomes It helps in protein synthesis.
(v) Nucleus Control centre of the cell. Contains the
cells DNA (genetic information) in the form of genes.
(vi) Mitochondria The main function of mitochondria
in aerobic cells is the production of energy by synthesis of ATP.
(vii) Nucleolus Biosynthesis of ribosomal RNA (rRNA)
and acts as a platform for protein synthesis.
(viii) Cell wall It provides protection and
rigidity to the plant cell.
(ix) Chloroplast These are the sites of photosynthesis
within plant cells.
(x) Peroxisomes Similar to (but smaller than) lysosomes,
the metabolic function of peroxisomes include
(a)Breakdown of toxic compounds, e.g., in the
cells of the liver and kidney.
(b) Photorespiration in plant cells. (5)
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