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महाराष्ट्र राज्य शिक्षण मंडळएचएससी विज्ञान (सामान्य) इयत्ता १२ वी

Define Population. - Biology

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प्रश्न

Define Population.

व्याख्या
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उत्तर १

Organisms of the same kind inhabiting a geographical area constitute the population.

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उत्तर २

Individuals live in groups in a well-defined geographical area, share or compete for similar resources, and potentially interbreed and thus form a population.

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उत्तर ३

The population is defined as a group of individuals of a species occupying a definite geographic area at a given time.

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  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 13: Organisms and Populations - Short Answer 1

APPEARS IN

बालभारती Biology [English] Standard 12 Maharashtra State Board
पाठ 13 Organisms and Populations
Exercises | Q 3 7. | पृष्ठ ३०७
नूतन Biology [English] Class 12 ISC
पाठ 15 Organisms and Populations
NCERT EXERCISES WITH ANSWERS | Q 12. (i) | पृष्ठ ६१६

व्हिडिओ ट्यूटोरियलVIEW ALL [4]

संबंधित प्रश्‍न

Apart from being a part of the food chain, predators play other important roles. Mention any two such roles supported by examples.


Define the following term:

Commensalism


Name and explain the interaction that is seen between clownfish and sea anemones.


Define the following term:

Camouflage


Name important defense mechanisms in plants against herbivores.


Community is defined as ______.


Define mutualism.


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


Predation and parasitism are which type of interactions?


Competition between species leads to ________.


Mutualism can be represented as the interaction between ____________.


The correct description for the interspecific interaction shown in the given figure is ______

 


Which of the following is TRUE for amensalism?


Type of interspecific interaction wherein one organism is benefited and other is harmed is called ____________.


Which of the following is NOT an example of mutualism?


Lichens showing relationship between alga and fungus is an example of ____________ type of interaction.


With the decline in the population of fig species it was noticed that the population of wasp species also started to decline. What is the relationship between the two and what could be the possible reason for decline of wasps?


Rafflesia an arnoldii is an example of ______.


Which of the following is not an example of commensalism?


An interaction favourable to both population but no obligatory to either is ______.


There are two optional ways of exploitation one way is parasitism. Which is the other one ______.


What is the interaction between two species called?


What is commensalism?


What is brood parasitism? Explain with the help of an example.


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 ______

Lianas are vascular plants rooted in the ground and maintain erectness of their stem by making use of other trees for support. They do not maintain direct relation with those trees. Discuss the type of association the lianas have with the trees.


Give one example for the following type.

Camouflaged animal


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.


While living in and on the host species, the animal parasite has evolved certain adaptations. Describe these adaptations with examples.


Give one example for the following:

An organism which can conform


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

A Tight one-to-one relationship between many species of fig tree and certain wasps is an example of ______.


"Abingdon tortoise in Galapagos islands became extinct within a decade on introduction of goats in the island." Explain giving reason.


"Some species of insects and frogs have evolved with various specific features that help them from being detected."

  1. Justify the statement giving reasons.
  2. Mention any two such features.

What happens to an inferior competitor if a superior competitor is present in the same environment?


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