https://www.google.com/url?sa=i&source=images&cd=&ved=2ahukewid2fvivpflahvac3akhusbadyqj
rx6bagbeaq&url=https%3a%2f%2fmusclerestoration.com%2fincrease-blood-circulation-to-improve-
cardiac-health%2f&psig=aovvaw0d-rlnmulxffgavi8qzt-x&ust=1574294055571106
, ALL ANIMAL CELLS REQUIRE A STEADY SUPPLY OF OXYGEN AND
NUTRIENTS , AND THEIR WASTE PRODUCTS MUST BE REMOVED.
UNICELLULAR ORGANISMS RELY ON SIMPLE DIFFUSION FOR
TRANSPORT OF NUTRIENTS AND REMOVAL OF WASTE.
MULTICELLULAR ORGANISMS HAVE DEVELOPED MORE
COMPLEX CIRCULATORY SYSTEMS (SIYAVULA.COM, 2019).
SOME INVERTEBRATES SUCH AS SPONGE, CNIDARIANS (HYDRAS,
SEA ANEMONES), AND FLAT WORMS (PLANARIAN) LACK
CIRCULATORY SYSTEM.
,PHYLUM CNIDARIA
• CNIDARIAN BODIES ARE VERY THIN AND ARE IN CONSTANT CONTACT WIT
THE SURROUNDING ENVIRONMENT, SO THEY CAN EXCHANGE THINGS BY DIRE
DIFFUSION.
• THE WATER AROUND THE ANIMALS CONTAINS OXYGEN AND
NUTRIENTS, SO THE CELLS THAT TOUCH THE WATER TAKE IN THE
ITEMS. THAT IS HOW THEY GET WHAT THEY NEED INTO THEIR
BODY. THOSE ARE
• JELLYFISH
• HYDRA
, JELLYFISH
• THE JELLYFISH DOES NOT HAVE A SPECIALI
CIRCULATORY SYSTEM. IT HAS A VERY THIN
LAYER OF COVERING, SO OXYGEN AND
NUTRIENTS CAN BE EASILY ABSORBED AND
SPREAD THROUGH THEIR BODIES. THE CEL
ON THE TOP OF THEIR BODIES ABSORB THE
NUTRIENTS NEEDED TO BE SPREAD AROUN
THEIR BODY. NUTRIENTS ARE ABSORBED IN
THE GASTROVASCUALR CAVITY, AND THEN
THEY ARE SPREAD FROM THE GASTRODERM
TO THE MESOGLEA AND ON TO THE EPIDER
(THE CIRCULATORY SYSTEM, 2019)..
rx6bagbeaq&url=https%3a%2f%2fmusclerestoration.com%2fincrease-blood-circulation-to-improve-
cardiac-health%2f&psig=aovvaw0d-rlnmulxffgavi8qzt-x&ust=1574294055571106
, ALL ANIMAL CELLS REQUIRE A STEADY SUPPLY OF OXYGEN AND
NUTRIENTS , AND THEIR WASTE PRODUCTS MUST BE REMOVED.
UNICELLULAR ORGANISMS RELY ON SIMPLE DIFFUSION FOR
TRANSPORT OF NUTRIENTS AND REMOVAL OF WASTE.
MULTICELLULAR ORGANISMS HAVE DEVELOPED MORE
COMPLEX CIRCULATORY SYSTEMS (SIYAVULA.COM, 2019).
SOME INVERTEBRATES SUCH AS SPONGE, CNIDARIANS (HYDRAS,
SEA ANEMONES), AND FLAT WORMS (PLANARIAN) LACK
CIRCULATORY SYSTEM.
,PHYLUM CNIDARIA
• CNIDARIAN BODIES ARE VERY THIN AND ARE IN CONSTANT CONTACT WIT
THE SURROUNDING ENVIRONMENT, SO THEY CAN EXCHANGE THINGS BY DIRE
DIFFUSION.
• THE WATER AROUND THE ANIMALS CONTAINS OXYGEN AND
NUTRIENTS, SO THE CELLS THAT TOUCH THE WATER TAKE IN THE
ITEMS. THAT IS HOW THEY GET WHAT THEY NEED INTO THEIR
BODY. THOSE ARE
• JELLYFISH
• HYDRA
, JELLYFISH
• THE JELLYFISH DOES NOT HAVE A SPECIALI
CIRCULATORY SYSTEM. IT HAS A VERY THIN
LAYER OF COVERING, SO OXYGEN AND
NUTRIENTS CAN BE EASILY ABSORBED AND
SPREAD THROUGH THEIR BODIES. THE CEL
ON THE TOP OF THEIR BODIES ABSORB THE
NUTRIENTS NEEDED TO BE SPREAD AROUN
THEIR BODY. NUTRIENTS ARE ABSORBED IN
THE GASTROVASCUALR CAVITY, AND THEN
THEY ARE SPREAD FROM THE GASTRODERM
TO THE MESOGLEA AND ON TO THE EPIDER
(THE CIRCULATORY SYSTEM, 2019)..
