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Biology
Organisms and Populations
90 questions from 35 papers, each with its answer.
- 90 questions
- 35 papers
- 2.55% of Biology
Population Interactions
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Epiphytes that are growing on a mango branch is an example of which of the following?
Epiphytes on trees exhibit commensalism (+, 0).
An epiphyte (e.g., an orchid) growing on the branch of a mango tree derives physical support without harming or taking nourishment from the host tree, representing commensalism.
Ecologist Contribution / Introduction
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Who is known as the father of Ecology in India?
Prof. Ramdeo Misra is reverently called the Father of Ecology in India.
Prof. Ramdeo Misra obtained his PhD in Ecology under W.H. Pearsall from the University of Leeds and established teaching and research in tropical ecology at Banaras Hindu University, earning the title Father of Ecology in India.
Mutualism (Co-evolution of Fig and Wasp)
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Given below are two statements:
Statement I: Fig fruit is a non-vegetarian fruit as it has enclosed fig wasps in it.
Statement II: Fig wasp and fig tree exhibit mutual relationship as fig wasp completes its life cycle in fig fruit and fig fruit gets pollinated by fig wasp.
In the light of the above statements, choose the most appropriate answer from the options given below:Statement I is scientifically false; Statement II correctly describes obligate mutualism between fig and wasp.
Statement I is scientifically incorrect because a plant fruit cannot be classified as non-vegetarian simply due to symbiotic internal pollination. Statement II is correct: fig trees and partner fig wasps exhibit an obligate one-to-one mutualism where the wasp pollinates the inflorescence and uses developing seeds/ovaries as oviposition sites.
Population Growth Models - Logistic Growth
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Which one of the following equations represents the Verhulst-Pearl Logistic Growth of population?
Verhulst-Pearl logistic growth equation is $\frac{dN}{dt} = rN\left(\frac{K-N}{K}\right)$.
The Verhulst-Pearl Logistic Growth equation describes sigmoid population dynamics where resources are limiting: $\frac{dN}{dt} = rN\left(\frac{K-N}{K}\right)$, where $N$ is population density, $r$ is intrinsic rate of natural increase, and $K$ is carrying capacity.
That is every question in Organisms and Populations for this filter.
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