ai What is a cell? ii name three scientists that are associated with the discovery...

BIOLOGY
WAEC 2022

ai What is a cell?

ii name three scientists that are associated with the discovery of the cell.

b. make a diagram, 6cm to 8cm long of a plant cell and label only the organelle responsible for cell production

name one blood cell in humans that does not have the oraganelle labelled in [b]i.

iii What is the biological implication of the cell named in (b)(i) not possessing the organelle responsible for

cell reproduction?

(c) List six organelles found in a plant celI.

Explanation

(a)(i) Cell is the basic/smallest structural/building block; and functional unit; of life.

(ii) Scientists that are associated with the discovery of the cell.

ii Robert Hooke

ii Matthias Schleiden

iii Theodor Schwann

iv Rudolf Virchow

v Felix Dujardin

(b) Diagram of a plant cell

ii Red blood cell/erythrocyte art[.iii ]iIt has a short life span ii Unable to reproduce more oxygen iii Gives room for carriage of more oxygen

[c] i Nucleus ii Chloroplas iii Vacuole iv Rough Endoplasmic Reticulum v Smooth Endopolasmic Reticulum vi Lysosome viii golgi body ix mithochondrion



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