Parasitism and Amensalism - Unsolved Practice Set
Chapter: Organisms and Populations | Topic: Parasitism and Amensalism
PARASITISM AND AMENSALISM - UNSOLVED PRACTICE SET
Topic: Parasitism and Amensalism
Multiple Choice Questions
Q1. Parasitism is an interspecific interaction in which:
- Both organisms benefit equally
- One organism (the parasite) benefits at the expense of the other organism (the host), which is harmed
- Neither organism is affected
- One organism benefits while the other is completely unaffected
Q2. Parasites that live on the external surface of their host's body are called:
- Endoparasites
- Ectoparasites
- Brood parasites
- Free-living organisms
Q3. Parasites that live inside the body of their host are called:
- Ectoparasites
- Endoparasites
- Predators
- Commensals
Q4. The cuckoo bird, known for laying its eggs in the nests of other bird species and relying on them to raise its young, is a classic example of:
- Ectoparasitism
- Brood parasitism
- Mutualism
- Commensalism
Q5. Amensalism is an interspecific interaction in which:
- Both species are harmed equally
- One species is harmed or inhibited, while the other species is unaffected
- Both species benefit
- One species benefits while the other is harmed
Short Answer Questions
Q6. Define parasitism, and differentiate between ectoparasites and endoparasites.
Q7. What is brood parasitism? Give one example of an organism showing this behaviour.
Q8. Name any two adaptations commonly seen in parasitic organisms that help them survive within or on their host.
Q9. Define amensalism, and give one suitable example.
Long Answer Questions
Q10. Discuss parasitism as an interspecific interaction, describing the different types of parasites and the various adaptations they have evolved to survive on or within their hosts.
Q11. Explain amensalism as an interspecific interaction, using a suitable example to describe how one species is negatively affected while the other remains unaffected.
APPLICATION / ANALYSIS
Q12. A species of mould growing in a petri dish is observed to inhibit the growth of nearby bacteria through the release of a chemical substance, without gaining any apparent benefit itself from this interaction. Identify the type of interspecific interaction this represents, and explain your reasoning.
Q13. The cuckoo bird lays its eggs in the nest of another bird species, and the host bird unknowingly raises the cuckoo chick, often at the expense of its own offspring's survival. Explain why this relationship is classified as a form of parasitism, identifying which organism benefits and which is harmed.