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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 – mutualism
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Mycorrhizae are the example of
Both fungus and plant benefit.
Mycorrhiza is a symbiotic association of fungi with the roots of higher plants (mutualism).
Plant adaptations – halophytes
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Plants which produce characterstic pneumatophores and show vivipary belong to
Mangrove halophytes show vivipary and pneumatophores.
Halophytes growing in saline soils show (i) vivipary, which is in-situ seed germination, and (ii) pneumatophores for gaseous exchange.
Population growth – logistic model
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Asymptote in a logistic growth curve is obtained when
Growth stops when N reaches carrying capacity K.
A population growing in a habitat with limited resources shows a logistic growth curve. For logistic growth: $\frac{dN}{dt} = rN\left(\frac{K - N}{K}\right)$ If K = N then $\frac{K - N}{K} = 0$, so $\frac{dN}{dt} = 0$ and the population reaches the asymptote.
That is every question in Organisms and Populations for this filter.
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