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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.
संबंधित प्रश्न
Why do clown fish and sea anemone pair up? What is this relationship called?
Define the Stenothermal organisms.
Give one example of interspecific competition.
Define community.
Community is defined as ______.
What is ESS?
Explain any three important characteristics of population.
Define population growth. Explain different types of age pyramids.
Define the following term:
Parasitism
The correct description for the interspecific interaction shown in the given figure is ______
______ interaction is the biological interaction between organisms of same population.
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 |
Which one of the following is NOT an example of commensalism?
Mycorrhizae are the example of ______.
Which one of the following is one of the characteristics of a biological community?
There are two optional ways of exploitation one way is parasitism. Which is the other one ______.
The presence or interference of one species leads to reduction in feeding efficiency of other species is termed as
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?
Define stenohaline species.
What is mycorrhiza?
What are the organisms that feed on plant sap and other plant parts called?
In a pond, we see plants which are free-floating; rooted–submerged; rooted emergent; rooted with floating leaves; Write the type of plant against the following examples.
| Plant Name | Type | |
| a. | Hydrilla | ______ |
| b. | Typha | ______ |
| c. | Nymphaea | ______ |
| d. | Lemna | ______ |
| e. | Vallisneria | ______ |
Give one example for the following type.
Chemical defense agent
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) |
Discuss the various types of positive interactions between species.
In an aquarium two herbivorous species of fish are living together and feeding on phytoplanktons. As per the Gause’s Principle, one of the species is to be eliminated in due course of time, but both are surviving well in the aquarium. Give possible reasons.
Give one example for the following:
An organism which can conform
The interaction between cattle egret and the buffalo is ______.
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 ______.
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.
What are the special adaptations that endoparasites show?
In which interaction of species, both the species are at a loss?
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.
Describe mutualism.
Give one example of parasitism.
