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प्रश्न
What is the ecological principle behind the biological control method of managing with pest insects?
उत्तर
Biological pest control is mostly reliant on predator-prey relationships. Baculoviruses (mainly of the Nucleopolyhedrovirus genus) are effective at controlling a wide range of insects and arthropods. Beetles (such as the Coccinella or ladybird beetle) control aphids and other pests. Gambusia, a fish, is introduced into ponds to control mosquito larval proliferation. Biological control strategies used in agricultural pest control rely on the predator's capacity to regulate its prey.
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संबंधित प्रश्न
During .............. typs of interaction, both organisms are benefited
- mutualism
- competition
- commensalism
- parasitism
Define the Stenothermal organisms
Community is defined as ______.
The cattle egret and grazing cattle in close association is a classic example of ______.
How absolute Natality differs from Realized Natality
Explain any three important characteristics of population.
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.
Select the CORRECT match:
| I | II | ||
| i. | Competition | a. | Lichen |
| ii. | Commensalism | b. | Sea anemone and clownfish |
| iii. | Mutualism | c. | Lions and Leopards |
What is commensalism?
What is mycorrhiza?
Observe the set of 4 figures A, B, C and D and, answer the following questions
- Which one of the figures shows mutualism?
- What kind of association is shown in D?
- Name the organisms and the association in C.
- What role is the insect performing in B?
 Fig. (A) |
 Fig. (B) |
 Fig. (C) |
 Fig. (D) |
While living in and on the host species, the animal parasite has evolved certain adaptations. Describe these adaptations with examples.
Sea Anemone gets attached to the surface of the hermit crab. The kind of population interaction exhibited in this case is ______.
Match the Column I with Column II.
| Column I | Column II |
| A. Lichen | (i) Commensalism |
| B. Shark and Pilot fish | (ii) Mutualism |
| C. Barnacles on the back of a whale | (iii) Symbiotic obligatory relationship |
| D. Sharks and dolphins | (iv) Competition |
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 ______.
Interspecific interaction could be ______.
In which interaction of species, both the species are at a loss?
Give one example of commensalism.
Give one example of Parasitism.
