Recent questions tagged organisms and populations

Give one example for each of the following:

asked Jul 11, 2017 by pady_1

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While living in and on the host species, the animal parasite has evolved certain adaptations. Descri

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Discuss the various types of positive interactions between species.

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Does light factor affect the distribution of organisms? Write a brief note giving suitable examples

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<div>Do you agree that regional and local variations exist within each biome?</div><div><br></div><d

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Give one example for each of the following types.

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Define zero population growth rate?

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In a pond, we see plants that are free floating ;rooted-submerged: rooted emergent; rooted with floa

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In a sea shore, the benthic animals live in Sandy, muddy or rocky substrata and accordingly develope

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Define heliophytes and sciophytes. Name a pant from your locality that is either a heliophyte or a s

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Why are coral reef not found in the regions from west Bengal to Andhra Pradesh but are found in Tami

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In an aquarium two herbivorous species of fishes are living together feeding on phytoplanktons. As p

asked Jul 10, 2017 by pady_1

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Lianas are vascular plants rooted in the ground and maintain erectness of their stem by making use o

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The density of a population in a habitat per unit area is measured in different units. Write the uni

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Categorise the following plants into hydrophytes, halophytes, mesophytes and xerophytes. Give reason

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Why do submerged plants receive weaker illumination than exposed floating plants in a lake?

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Why do fresh water organisms have contractile vacuoles whereas majority of marine organisms lack the

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If a fresh water fish is placed in an aquarium containing seawater, will the fish be able to survive

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

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Define Ectoparasite and endoparasite with suitable example.

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What is high altitude sickness? Write its symptoms. 

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What is a diapause and its significance?

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What is homeostasis? 

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Why do high areas have brighter sunlight and lower temperatures as compared to the plains?

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Which element is responsible for causing soil salinity? At what concentration does the soil become s

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What is a tree line?

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Give the scientific name of any two microorganisms inhibiting the human intestine.

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In an association of two animal species, one is a termite which feeds on wood and the other is a pro

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Give a suitable example for commensalism. 

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Define aestivation. 

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What are the organisms that feed on plants sap and other plant parts called?

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What would be the growth rate pattern, when the resources are unlimited? 

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Emergent land plants that can tolerate the salinities of the sea are called?

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What is Mycorrhiza? 

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Name the association in which one species produces poisonous substance or a change in environmental

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What is commensalism? 

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What is the interaction between two species called? 

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Define stenohaline species.

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Species that can tolerate wide range of salinity are called?

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What are eurythermic species? 

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Species that can tolerate narrow range of temperature are called ?

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