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प्रश्न
Give one example of interspecific competition.
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उत्तर
Example 1: Imagine a cow and a horse on a piece of grassland. They belong to different species but compete for the same grass (food).
Example 2: Competition between leopards and lions for the same prey.
Example 3: Resident fish compete with migratory birds, such as flamingos, for common food, i.e., zooplankton.
संबंधित प्रश्न
Apart from being a part of the food chain, predators play other important roles. Mention any two such roles supported by examples.
Explain mutualism with the help of any two examples.
Name important defence mechanisms in plants against herbivory.
Competition and Mutualism.
Select the statement which explains the best parasitism.
Define the following term:
Camouflage
Distinguish between the following: Parasitism and Mutualism.
The number of deaths under ideal conditions is known as ______.
The relationship between sucker fish and shark is _________.
Tabulate and analysis of two species population interaction.
Differentiate between predator and prey.
Identify the interspecific interaction depicted in the following figure.
Brood parasitism is best explained by the example of ____________.
Which of the following is TRUE for amensalism?
Type of interspecific interaction wherein one organism is benefited and other is harmed is called ____________.
Lichens showing relationship between alga and fungus is an example of ____________ type of interaction.
______ in birds is an interesting example of parasitism in which the parasitic bird lays its eggs in the nest of its host and the host incubates them.
An interaction favourable to both population but no obligatory to either is ______.
A population has more young individuals compared to the older individuals. What would be the status of the population after some years?
What is homeostasis?
Give one example for the following type.
Camouflaged animal
Fill in the blanks
| Species A | Species B | Type of Interaction | Example |
| + | - | ______ | ______ |
| + | + | ______ | ______ |
| + | 0 | Commensalism | ______ |
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) |
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 ______.
"Cattle and goats do not browse the Calotropis plant." Justify the statement giving reasons.
Interaction between clown fish living among the stinging tentacles of sea anemone is an example of ______.
"Abingdon tortoise in Galapagos islands became extinct within a decade on introduction of goats in the island." Explain giving reason.
Many copepods live on the body surface of marine fish. This relationship is an example of ______.
Observe the graph given below.
|
The graph represents inter-specific interaction between two species of Paramecia competing for the same resource in a culture medium. Paramecium caudatum and Paramecium aurelia were grown in separate cultures as well as in mixed cultures. It was found that each species grew in numbers according to the logistic equation.
|
a) Which species is competitively superior? Support it with the data provided in the graph.
b) State the underlying principle for the above result and name the scientist associated with this principle.
c) Explain the mechanism in which two or more species competing with each other can co-exist.
OR
Graphs A and B shown below depict interaction of two species. Which graph indicates Mutualism? Give reason.
 |
 |
| A | B |
Describe mutualism.
What happens to an inferior competitor if the superior competitor is removed from the environment?
Given below are two statements.
Statement I - The amount of energy available in an ecosystem increases at each successive trophic level.
Statement II - Transfer of energy from one trophic level to the other follows 10% law.
In light of the above statements, select the correct option given below.
Statement I: Gause’s competitive exclusion principle states that two closely related species competing for different resources cannot exist indefinitely.
Statement II: According to Gause’s principle, during competition, the inferior will be eliminated. This may be true if resources are limiting.
In the light of the above statements, choose the correct answer from the options given below:
