Parasitism is a type of relationship in nature where one organism benefits while the other is harmed.
🧬 Definition
Parasitism
Parasitism is a biological interaction in which a parasite lives on or inside a host, taking nutrients or resources from it and usually causing harm.
🪱 How it works
- 🐛 Parasite = benefits (gets food/shelter)
- 🧍 Host = gets harmed (loses nutrients or health)
The parasite usually does not kill the host immediately, because it depends on it for survival.
🧫 Examples of parasitism
🐜 In animals/humans
- Tapeworms in intestines
- Mosquitoes feeding on blood
- Lice on scalp
- Malaria parasite in blood
🌿 In plants
- Dodder plant (Cuscuta) growing on other plants
- Mistletoe drawing nutrients from trees
⚖️ Key features
- One benefits, one is harmed
- Parasite depends on host for survival
- Relationship is usually long-term
- Can weaken but not always kill the host
🧠 Difference from other relationships
- 🟢 Mutualism: both benefit (e.g., bees and flowers)
- 🟡 Commensalism: one benefits, other is not affected
- 🔴 Parasitism: one benefits, one is harmed
🧾 Simple summary
Parasitism is a “take-and-harm” relationship in nature, where the parasite survives by living off a host organism.
If you want, I can also explain:
🧬 Parasites in humans and how they spread
🧫 Life cycle of common parasites (like malaria)
🧠 Difference between parasite, virus, and bacteria in simple terms
