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प्रश्न
Define the following term:
Camouflage
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उत्तर
Camouflage, also called cryptic colouration, is a defense mechanism or tactic that organisms use to disguise their appearance, usually to blend in with their surroundings. Organisms use camouflage to mask their location, identity, and movement.
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संबंधित प्रश्न
Explain mutualism with the help of any two examples.
Name important defence mechanisms in plants against herbivory.
What is the ecological principle behind the biological control method of managing with pest insects?
Answer the following question.
Mention the term used to describe a population interaction between an orchid growing on a forest tree.
Name and explain the interaction that is seen between clownfish and sea anemones.
Name the type of association: Hummingbirds and host flowering plants
Name important defense mechanisms in plants against herbivores.
The cattle egret and grazing cattle in close association is a classic example of ______.
In Logistic growth curve lag phase shows______.
The number of deaths under ideal conditions is known as ______.
Define Niche.
Explain different population interactions with examples.
Predation and parasitism are which type of interactions?
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 |
Two species competing for the same resources, avoid competition by choosing different times for feeding, also known as ______
Mutualism can be represented as the interaction between ____________.
Identify the interspecific interaction depicted in the following figure.
The correct description for the interspecific interaction shown in the given figure is ______
Brood parasitism is best explained by the example of ____________.
Identify the type of negative interaction.
Which one of the following is NOT an example of commensalism?
Which one of the following is NOT an example of mutualism?
A protozoan living in the digestive tract of a flea that lives on a dog is an example of ______
Amensalism can be represented as ______
Amensalism is an association between two species where ______.
What is the interaction between two species called?
What is homeostasis?
Define ectoparasite and endoparasite and give suitable examples.
What is brood parasitism? Explain with the help of an example.
Give one example for the following type.
Phytophagous animal
Give one example for the following type.
Chemical defense agent
Discuss the various types of positive interactions between species.
Write the observations made at the end of Connell's field, experiment on barnacles on the rocky sea coasts of Scotland.
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 |
"Some species of insects and frogs have evolved with various specific features that help them from being detected."
- Justify the statement giving reasons.
- Mention any two such features.
Observe the graph given below.
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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.
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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 |
Mention the scientific name of protozoan parasite that causes Amoebiasis.
Describe mutualism.
Give one example of parasitism.
