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प्रश्न
What is the ecological principle behind the biological control method of managing with pest insects?
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उत्तर
The principles of predation and parasitism are used in biological pest management. These are based on the ability of the predator to regulate the prey population.
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संबंधित प्रश्न
Why do clown fish and sea anemone pair up? What is this relationship called?
Define the following term:
Interspecific competition
Mention any two examples where the organisms involved are commercially exploited in agriculture.
Name the type of association: Crow feeding the hatchling of Koel
With the help of a suitable diagram, describe the logistic population growth curve.
Define population growth. Explain different types of age pyramids.
Match the following and choose the correct combination from the options given below.
| Column I | Column II |
| Mutualism | Lion and deer |
| Commensalism | Round worm and man |
| Parasitism | Birds compete with squirrels for nuts |
| Competition | Sea anemone on hermit crab |
| Predation | Barnacles attached to Whales |
Identify the interspecific interaction in which species A is harmed and species B is unaffected.
Mutualism can be represented as the interaction between ____________.
Identify the correct pair that exhibits commensalism.
______ interaction is the biological interaction between organisms of same population.
Which of the following is NOT an example of mutualism?
Which one of the following pair does NOT show commensalism?
Mycorrhizae are the example of ______.
Which type of interaction is represented by the given figure?
A population has more young individuals compared to the older individuals. What would be the status of the population after some years?
Which of the following is a partial root parasite?
What is homeostasis?
In an association of two animal species, one is a termite which feeds on wood and the other is a protozoan Trichonympha present in the gut of the termite. What type of association they establish?
Fill in the blanks
| Species A | Species B | Type of Interaction | Example |
| + | - | ______ | ______ |
| + | + | ______ | ______ |
| + | 0 | Commensalism | ______ |
Pick out the appropriate association representing brood parasitism.
Write the observations made at the end of Connell's field, experiment on barnacles on the rocky sea coasts of Scotland.
The value of 'Z' (regression coefficient) lies in the range of ______ regardless of the taxonomic group or the region.
Carnivorous animals-lions and leopards, occupy the same niche but lions predate mostly larger animals and leopards take smaller ones. This mechanism of competition is referred to as ______.
A bird laying its egg in the nest of another bird is the type of ______.
"Cattle and goats do not browse the Calotropis plant." Justify the statement giving reasons.
Write a note on parasitism.
What are the special adaptations that endoparasites show?
Which one of the following statement INCORRECT regarding competition?
