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Question
Define the following term:
Camouflage
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Solution
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.
RELATED QUESTIONS
Which day is observed as ‘World Environment Day’?
During .............. typs of interaction, both organisms are benefited
- mutualism
- competition
- commensalism
- parasitism
Explain mutualism with the help of any two examples.
Name important defence mechanisms in plants against herbivory.
An orchid plant is growing on the branch of a mango tree. How do you describe this interaction between the orchid and the mango tree?
Define the following term:
Commensalism
Mention any two examples where the organisms involved are commercially exploited in agriculture.
In Logistic growth curve lag phase shows______.
What is Mortality? What are its two types?
Define Niche.
The interaction in nature, where one gets to benefit on the expense of other is _________.
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 |
Differentiate between predator and prey.
Identify the interspecific interaction in which species A is harmed and species B is unaffected.
Which principle/theory states that 'Two closely related species competing for the same resources cannot co-exist indefinitely and the competitively inferior will be eliminated eventually.'?
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 ____________.
In the given picture, identify the type of interspecific interaction.

Match the Columns.
| Column A | Column B | ||
| i. | Lice on humans | a. | Endoparasites |
| ii. | Ectoparasites on marine fishes | b. | Grows on hedge plants |
| iii. | Cuscuta | c. | Ectoparasites |
| iv. | Plasmodium and humans | d. | Copepods |
Lichens showing relationship between alga and fungus is an example of ____________ type of interaction.
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A protozoan living in the digestive tract of a flea that lives on a dog is an example of ______
Musk deer is an example of ______
The presence or interference of one species leads to reduction in feeding efficiency of other species is termed as
In spite of interspecific competition in nature, which mechanism the competing species might have evolved for their survival?
A population has more young individuals compared to the older individuals. What would be the status of the population after some years?
What is mycorrhiza?
What are the organisms that feed on plant sap and other plant parts called?
Pick out the appropriate association representing brood parasitism.
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Complete the following chart regarding population interaction and re-write:
| Sr. No. | Name of interaction | Interaction between |
| 1. | ? | Plasmodium and Man |
| 2. | ? | Leopard and Lion |
| 3. | ? | Clownfish and Sea-anemone |
The diagram given below shows the life cycle of a malarial parasite. Study it carefully and answer the questions that follows:

- Name the hosts in which the asexual phase and sexual phase of the life cycle takes place.
- Identify the infective stage labelled ‘D’.
- Name the structure labelled ‘A’ and ‘E’.
- Give any one symptom of malaria.
Explain one type of mutualism.
Association between clown fish and sea anemone is ______.
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Statement I - Calotropis growing in abandoned fields is never consumed by cattle and goats.
Statement II - Calotropis produces highly poisonous cardiac glycosides.
In light of above statements, select the most appropriate answer from the option given below.
