CUET and UG exam CUET UG 2025 Mock Test Series Biology Ecology and Environment Organisms and Populations
Comprehension Passage
Population interactions are essential to natural habitats, where no species exists in isolation. All species, including plants, animals, and microbes, rely on each other for survival, creating complex biological communities. These interactions, known as interspecific interactions, vary widely, being beneficial, detrimental, or neutral to the species involved. For example, predation, competition, mutualism, commensalism, and parasitism are common types of these interactions. Plants need microbes for nutrient cycling and animals for pollination, while animals depend on plants and other organisms for food and shelter. This interdependence highlights the intricate web of life that sustains ecosystems.
Which of the following are examples of ectoparasites?
a) Lice on humans
b) Malarial parasite in humans
c) Ticks on dogs
d) Human liver fluke
1
b,d
2
a,c
3
a,b,c
4
a,b,d