ECOLOGY
ECOSYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Intestinal bacteria obtain nutrients from the gut and produce vitamin K used by humans.
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Bacteria become resistant to antibacterial medication that humans use for treatment.
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Invasive bacteria at an area of injury produce toxins that damage healthy tissues of the human body.
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Bacteria in improperly prepared food is consumed by humans, causing food poisoning
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Detailed explanation-1: -Which of these best demonstrates mutualism between certain types of bacteria and humans? Intestinal bacteria obtain nutrients from the gut and produce vitamin K used by humans.
Detailed explanation-2: -Several well-known examples of mutualistic arrangements exist. The partnership between nitrogen-fixing bacteria and leguminous plants is one example. In addition, cows possess rumen bacteria that live in the digestive tract and help digest the plants the cow consumes.
Detailed explanation-3: -The mutualistic bacteria send chemical signals to the host about the amount of nutrients they need, and the host provides only that much, so harmful bacteria are starved out. The mutualistic gut flora also produce bacteriocins, substances which kill harmful microbes.
Detailed explanation-4: -One example of a mutualistic relationship is that of the oxpecker (a kind of bird) and the rhinoceros or zebra. Oxpeckers land on rhinos or zebras and eat ticks and other parasites that live on their skin. The oxpeckers get food and the beasts get pest control.