Neurofibromatosis, a benign tumor of the sheath cells that surround nerves, is caused by

a.  Loss of both alleles of NF1

b.  Mutation in RAS GAP-type protein

c.  A single mutant NF1 allele

d.  Mutation in SRC protein

#Question id: 10725

#Unit 10. Ecological Principles

While studying the diversity of 3 communities, 5 species and 50 individuals were recorded from each community. The number of individuals under each species was listed as mentioned in the following Table.  

Which of the following is decreasing order of evenness of community?

#Question id: 10726

#Unit 10. Ecological Principles

Which of the following habitat is most diversify?

Based on the above following conclusions: observations, the ecologist draws

A. Plant communities H3 and H4 show similar value of evenness

B. Plant communities H4 is more diverse than H3

C. Plant community H1 is least diverse among other community

D. Plant community H3 is most diverse

Which of the following statements is correct regarding above conclusions?

#Question id: 10727

#Unit 10. Ecological Principles

The following table shows the number of individuals of each species found in two communities

The calculated evenness values for communities C1 and C2, respectively are

#Question id: 10728

#Unit 10. Ecological Principles

Following table shows the number of individuals of different species in two communities, X and Y. Use Jaccard index determine the degree of similarity between X and Y community? 

#Question id: 10729

#Unit 10. Ecological Principles

Researcher study the diversity community was shown in table, the relative abundance of each species at different community? 

#Question id: 10730

#Unit 10. Ecological Principles

Which of the following index value increasing towards late successional community?