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प्रश्न
Define population.
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उत्तर १
A population is a group of individuals of the same species that are capable of interbreeding and are found in a geographical area. E.g., all the frogs identified as Rana tigrina living in a given pond constitute a population. Similarly, all water hyacinth plants (Eichhornia) growing in that pond form another population. Organisms of the same kind may form several populations inhabiting different geographical areas.
उत्तर २
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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संबंधित प्रश्न
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?
Name the two intermediate hosts which the human liver fluke depends on to complete its life cycle so as to facilitate parasitization of its primary host.
Association between sea anemone and Hermit crab in gastropod shell is that of.
Name important defense mechanisms in plants against herbivores.
Distinguish between the following: Parasitism and Mutualism.
In Logistic growth curve lag phase shows______.
Define Absolute Mortality.
What is Mortality? What are its two types?
Define the term population interactions. State its two types.
Tabulate and analysis of two species population interaction.
Using '-' to depict inhibition and '+' to depict benefit, mutualism between two species can be represented as ____________.
Mutualism can be represented as the interaction between ____________.
Identify the correct pair that exhibits commensalism.
Identify the interspecific interaction depicted in the following figure.
Brood parasitism is best explained by the example of ____________.
Select the CORRECT match:
| I | II | ||
| i. | Competition | a. | Lichen |
| ii. | Commensalism | b. | Sea anemone and clownfish |
| iii. | Mutualism | c. | Lions and Leopards |
Which one of the following pair does NOT show commensalism?
Mycorrhizae are the example of ______.
Exarch xylem is found in:
______ 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 of the following is not an example of commensalism?
Lichens are association of ______.
What is the interaction between two species called?
What is brood parasitism? Explain with the help of an example.
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.
While living in and on the host species, the animal parasite has evolved certain adaptations. Describe these adaptations with examples.
Pick out the appropriate association representing brood parasitism.
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 |
Between which among the following, the relationship is not an example of
?
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 ______.
A Tight one-to-one relationship between many species of fig tree and certain wasps is an example of ______.
Many copepods live on the body surface of marine fish. This relationship is an example of ______.
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.
Some orchids live on the branches of mango trees. Name the type of interaction that exists between the mango tree and the orchid.
Parasitism is an interaction between two organisms in which ______.
