A single-stranded DNA molecule contains 40 nucleotides with equal amounts of A, C, G, and T. This DNA strand can combine with a complementary DNA strand to form a double-stranded DNA molecule. Which of the following double-stranded DNA molecules would denature at a lower temperature than the 40 base-pair double-stranded molecule described above?

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#Question id: 11912

#Unit 10. Ecological Principles

The success of birds introduced to Tahiti or the Hawaiian Islands was dependent on the morphology of the species already present. If there was a small morphological difference in bill length between the resident and introduced species, then

TLS Online TPP Program

#Question id: 11913

#Unit 10. Ecological Principles

During the rate of succession several factors would be observe at the pioneer as well as climax community;

STAGES	CHARACTER
A) Pioneer community	i) Biotic Potential low
B) Climax community	ii) Root to Shoot ratio is high
	iii) Productivity per biomass is low
	iv) Net primary productivity is high
	v) P/R ratio is greater than 1
	vi) Nutrient cycling is closed
	vii) Regeneration ability is more
	viii) Resistance ability is more

Match the community stages with its given characters;

TLS Online TPP Program

#Question id: 11914

#Unit 10. Ecological Principles

Alder trees, which harbour nitrogen-fixing bacteria in their roots, provide nitrogen to soils developing on sandbars rivers, this is an example of,

TLS Online TPP Program

#Question id: 11915

#Unit 10. Ecological Principles

Which of the following is the correct prediction about the three types of model such as; Facilitation, Inhibition, Tolerance model.

TLS Online TPP Program

#Question id: 11916

#Unit 10. Ecological Principles

Which one of the following  features of an later community?

TLS Online TPP Program

#Question id: 11917

#Unit 10. Ecological Principles

Which one of the following  features of an early community?