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कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान 2nd PUC Class 12

Give one example of commensalism. - Biology

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प्रश्न

Give one example of commensalism.

अति संक्षिप्त उत्तर
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उत्तर

The pilot fish (Naucrates) always accompanies sharks without becoming attached to their bodies. When a shark eats its prey, it feeds on falling food particles.

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पाठ 15: Organisms and Populations - NCERT EXERCISES WITH ANSWERS [पृष्ठ ६१६]

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नूतन Biology [English] Class 12 ISC
पाठ 15 Organisms and Populations
NCERT EXERCISES WITH ANSWERS | Q 13. (a) (ii) | पृष्ठ ६१६

व्हिडिओ ट्यूटोरियलVIEW ALL [4]

संबंधित प्रश्‍न

Why do clown fish and sea anemone pair up? What is this relationship called?


Mention any two examples where the organisms involved are commercially exploited in agriculture.


Name the type of association: Hummingbirds and host flowering plants


Give one example of Mutualism.


Enlist and explain the important characteristics of a population.


How absolute Natality differs from Realized Natality


What is Mortality? What are its two types?


Define the term population interactions. State its two types.


Define Niche. 


The interaction in nature, where one gets to benefit on the expense of other is _________.


Tabulate and analysis of two species population interaction.


Identify the interspecific interaction depicted in the following figure.


Which of the following is TRUE for amensalism?


Which population interaction can be represented by'+''-'?


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

______ 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.


Which one of the following is one of the characteristics of a biological community?


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?


What is the interaction between two species 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.

Camouflaged animal


Discuss the various types of positive interactions between species.


Pick out the appropriate association representing brood parasitism.


"Cattle and goats do not browse the Calotropis plant." Justify the statement giving reasons.


Many copepods live on the body surface of marine fish. This relationship is an example of ______.


Mention the scientific name of protozoan parasite that causes Amoebiasis.


The diagram given below shows the life cycle of a malarial parasite. Study it carefully and answer the questions that follows:

  1. Name the hosts in which the asexual phase and sexual phase of the life cycle takes place.
  2. Identify the infective stage labelled ‘D’.
  3. Name the structure labelled ‘A’ and ‘E’.
  4. Give any one symptom of malaria.

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