differentiation
causes cells to
become specialised,
differentiation
occurs during
development of a
multicellular
organism
specialised cells
form tissues which
form organs which
form organ
systems
large multicellular
organisms have different
systems inside them for
exchanging and
transporting materials
similar cells are
organised into tissues
a tissue is a group of similar cells working
together for a particular function, tissues can
include more than one type of cell
examples of tissues in mammals:
Muscular tissue: contract to move whatever it's attached too
Glandular tissue: produce substances (E.G enzymes &
hormones) Epithelial tissue: covers some parts of the body(e.g
inside of gut)
Tissues are organised into organs
Organ is a group of different tissues
working together for a certain function
for example the stomachs an organ made up of:
Muscular tissue to move stomach
wall therefore churn up the food
Glandular tissue which makes
digestive juices to digest food
Epithelial tissue which covers
outside and inside of stomach
Organs are organised into
organ systems
Large multicellular
organisms are made up
of organ systems
organ system is a
group of organs
working together for a
certain function
for example the digestive
system in mammals
breaks down food and is
made up of these organs...
Glands (e.g pancreas and
salivary glands) which make
digestive juices
stomach and small intestine
which digest food
liver which produces bile
large intestine which absorbs water
from undigested food, leaving foeces
the digestive system exchanges
materials with the environment
by taking in nutrients and
releasing substances such as bile
small intestine which
absorbs soluble food
molecules
Plant cells also
organised into
organs and tissues
Plants are made of organs like
stems, roots and leaves these
organs are made of tissues
leaves are made of ...
Mesophyll tissue : where
most photosynthesis in a
plant occurs
Xylem and Phloem:
transport things like
water, mineral ions and
sucrose