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Higher genetic diversity

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שאלה #133720

		Is usually apparent in small populations
		May help a population to cope better with future environmental changes
		Has no effect on the future population's persistence
done		Has usually a negative effect on the future population's persistence

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מיין לפי דירוג חדש ישן

The term 'species diversity' is composed of

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שאלה #133722

		Number of individuals (abundance) only
		Number of species only
		umber of genes and number of individuals (abundance)
done		Number of individuals (abundance) and number of specie

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מיין לפי דירוג חדש ישן

The 'snowball effect' in the context of the relationship between species richness and ecosystem functionality means that

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שאלה #133723

		Losing a particular function due to reduced species richness can lead to adding other functions
done		Losing a particular function due to reduced species richness can lead to losing other functions
		Losing a particular function due to reduced species richness has no effect on other functions
		Losing a particular function due to reduced species richness has a positive effect on other functions

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מיין לפי דירוג חדש ישן

In the context of our section, stability is defined as:

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שאלה #133724

		The inability of an ecosystem to resist changes in the presence of perturbations
		The ability of an ecosystem to move from one state to another
done		The ability of an ecosystem to resist changes in the presence of perturbations
		The ability of an ecosystem to change in the presence of perturbations

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מיין לפי דירוג חדש ישן

Which of the sentences below is incorrect:

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שאלה #133725

		Species extinction may cause a reduction in the functionality of an ecosystem
		Healthy ecosystems can buffer against local extinctions to maintain local stability
		Habitat loss in an already degraded ecosystem may lead to local instability
done		Degraded ecosystem has no effect on the extinction probability of the remaining species

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מיין לפי דירוג חדש ישן

Most species in the world are?

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שאלה #133727

		Plants
done		Insects
		Reptiles
		Birds

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מיין לפי דירוג חדש ישן

Usually, smaller species have

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שאלה #133728

done		More restricted ecological requirements
		Less restricted ecological requirements
		Similar ecological requirements as larger species
		Wide ecological requirements

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מיין לפי דירוג חדש ישן

In the species-area relationship curve, the 'z' parameter reflects

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שאלה #133731

		The intercept of the line with the Y axis
		The intercept of the line with the x axis
done		The slope of the line on a logarithmic scale
		The decrease of species richness with area

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מיין לפי דירוג חדש ישן

Larger areas, usually

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שאלה #133732

done		Harbor higher heterogeneity
		Are very homogeneous
		Have lower heterogeneity
		Are dominated by one large habitat

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מיין לפי דירוג חדש ישן

As a rule of thumb, for nature conservation, we should strive for

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שאלה #133734

		Small and highly heterogeneous areas with greater connectivity
		Large and highly homogeneous areas with greater connectivity
done		Large and highly heterogeneous areas with greater connectivity
		Large and highly homogeneous areas with lower connectivity

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מיין לפי דירוג חדש ישן

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