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SCIENCE; CH A P TERP A R A SI T
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EXPLANATION OF PARASITISM;
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EXPLANATION OF PARASITISM;
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EXPLANATION OF PARASITISM;
O ther examples are (a) s tem borers and oil palm
lea ves
(b) tree barnacles and trees
(c) aphids and mus tard plan ts
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EXPLANATION OF PARASITISM;
•USUALLY, ALTHOUGH PARASITES HARM THEIR HOST
IN THE PARASITE'S BEST INTEREST NOT TO KILL THE
BECAUSE IT RELIES ON THE HOST'S BODY AND BODY
FUNCTIONS, SUCH AS DIGESTION OR BLOOD
CIRCULATION, TO LIVE.
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EXPLANATION OF PARASITISM;• SOME PARASITIC ANIMALS ATTACK PLANTS. APHIDS ARE INSECTS THAT EAT THE SAP FROM T
ON WHICH THEY LIVE.
• PARASITIC PLANTS AND FUNGI CAN ATTACK ANIMALS. A FUNGUS CAUSES LUMPY JAW, A DISE
INJURES THE JAWS OF CATTLE AND HOGS.
• THERE ARE ALSO PARASITIC PLANTS AND FUNGI THAT ATTACK OTHER PLANTS AND FUNGI. A P
FUNGUS CAUSES WHEAT RUST AND THE DOWNY MILDEW FUNGUS ATTACKS FRUIT AND VEGE
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EXPLANATION OF PARASITISM;
• SOME SCIENTISTS SAY THAT ONECELLED BACTERIA AND VIRUSES THAT LIVE IN ANIMALS AN
THEM, SUCH AS THOSE THAT CAUSE THE COMMON COLD, ARE PARASITES AS WELL.
• HOWEVER, THEY ARE STILL CONSIDERED DIFFERENT FROM OTHER PARASITES. MANY TYPES O
PARASITES CARRY AND TRANSMIT DISEASE. LYME DISEASE IS TRANSMITTED BY DEER TICKS
• A PARASITE AND ITS HOST EVOLVE TOGETHER. THE PARASITE ADAPTS TO ITS ENVIRONMENT
AND USING THE HOST IN WAYS THAT HARM IT.
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EXPLANATION OF PARASITISM;
•HOSTS ALSO DEVELOP WAYS OF GETTING RID OF OR PROTECTING
THEMSELVES FROM PARASITES. FOR EXAMPLE, THEY CAN SCRATCH
TICKS. SOME HOSTS ALSO BUILD A SYMBIOTIC RELATIONSHIP WIT
ANOTHER ORGANISM THAT HELPS TO GET RID OF THE PARASITE.
•LADYBUGS LIVE ON PLANTS, EATING THE APHIDS AND BENEFITING
GETTING FOOD, WHILE THE PLANT BENEFITS BY BEING RID OF THE A