Comprehensive Assessment On Biodiversity And Entomological Systems Practice Tests

Question 1

In a forest plot, you identify 10 individuals of species A, 10 of species B, and 10 of species C. Calculate the species evenness ($E$) using the formula $E = \frac{H}{H_{max}}$, where $H_{max} = \ln(S)$ and $S$ is the number of species. Given $H = \ln(3)$, determine the value of $E$.

Accepted Answer

1

Question 2

An ecosystem has two sites. Site 1 has species counts of {5, 5, 5, 5} and Site 2 has {1, 1, 1, 17}. Calculate the Shannon Index $H = -\sum p_i \ln(p_i)$ for Site 1. Which value represents the correct $H$ for Site 1?

Accepted Answer

Option A

Answer

Option B

Answer

Option C

Answer

Option D

Question 3

Given the Shannon Index formula $H = -\sum_{i=1}^{S} p_i \ln(p_i)$, if an ecosystem contains 2 species with proportions $p_1 = 0.9$ and $p_2 = 0.1$, what is the resulting $H$ value?

Accepted Answer

Option A

Answer

Option B

Answer

Option C

Answer

Option D

Question 4

Which of the following processes act as drivers that decrease biodiversity within a stable population?

Accepted Answer

Option A

Answer

Option B

Answer

Option C

Answer

Option D

Question 5

If a population shifts from sexual reproduction to obligate asexual reproduction, the genetic diversity is expected to increase over time due to the lack of recombination.

Accepted Answer

False

Answer

True

Question 6

Consider a lake with 100 total individuals distributed among 4 species: 70, 10, 10, 10. If a conservation effort restores the population to 25, 25, 25, 25, how does the Shannon Index $H$ change?

Accepted Answer

Option A

Answer

Option B

Answer

Option C

Answer

Option D

Question 7

A researcher observes that a population's nucleotide diversity $\pi$ has dropped from $0.05$ to $0.01$ due to a bottleneck event. Calculate the percentage decrease in nucleotide diversity.

Accepted Answer

80%

Question 8

In a taxonomic study, a researcher identifies a group of organisms that includes a common ancestor and all of its descendants. If the total number of species in this clade is represented by $N = 2^k$ where $k$ is the number of branching events, determine the classification type for a group that contains only $N - 1$ descendants.

Accepted Answer

Paraphyletic

Answer

Monophyletic

Answer

Polyphyletic

Answer

Convergent

Question 9

A phylogenetic tree has a root node and $n$ terminal taxa. If the probability of a specific morphological trait appearing due to convergent evolution in any two unrelated lineages is $P(c) = \frac{1}{10^3}$, calculate the probability that two unrelated lineages both exhibit this trait independently.

Accepted Answer

0.000001

Question 10

Given the taxonomic hierarchy levels $L = \{Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species\}$, if we assign an index $i$ to each level where $i=1$ is Domain and $i=8$ is Species, calculate the total number of unique taxonomic paths for an organism that must pass through exactly $n=5$ levels starting from the Domain.

Accepted Answer

Option A

Answer

Option B

Answer

Option C

Answer

Option D

Question 11

If a phylogenetic analysis identifies a group containing species from two distinct lineages that do not share a recent common ancestor, but they share a trait $T$ resulting from convergent evolution, this group is classified as monophyletic.

Accepted Answer

False

Answer

True

Question 12

An organism is classified under the following hierarchy: Eukarya (Domain), Animalia (Kingdom), Chordata (Phylum), Mammalia (Class), Primates (Order), Hominidae (Family), Homo (Genus), Sapiens (Species). Which of the following subsets of this hierarchy represent a monophyletic group if we consider the common ancestor of all listed taxa?

Accepted Answer

Option A

Answer

Option B

Answer

Option C

Answer

Option D

Question 13

In a study of evolutionary divergence, the number of shared traits $S$ between two species is modeled by $S(t) = S_0 e^{-kt}$, where $t$ is time in millions of years and $k$ is the divergence constant. If $S_0 = 100$ and $k = 0.05$, determine the number of shared traits remaining after $t = 20$ million years.

Accepted Answer

36.79

Question 14

An insect population grows according to the model $P(t) = P_0 e^{rt}$, where $P_0 = 1000$ and $r = 0.25$ per day. Calculate the population size after $t = 4$ days. Provide the final integer value.

Accepted Answer

2718

Question 15

If a specific insect species undergoes metamorphosis, it partitions resources between larval and adult stages. If the larval stage consumes $L$ units of biomass and the adult stage consumes $A$ units, and the total biomass available is $T = L + A$, which expression represents the efficiency of resource utilization $\eta$ if the adult stage is $k$ times more efficient than the larval stage?

Accepted Answer

Option A

Answer

Option B

Answer

Option C

Answer

Option D

Question 16

A field requires pollination for $70\%$ of its $1000$ crops. If each pollinator insect visits $5$ crops per hour and works for $8$ hours, calculate the total number of insects required to ensure every crop is visited at least once.

Accepted Answer

18

Question 17

Which of the following mathematical relationships correctly describe the role of insects in nutrient cycling? Select all that apply.

Accepted Answer

Option A

Answer

Option B

Answer

Option C

Answer

Option D

Question 18

If the land requirement for producing $1$ kg of beef is $L_b = 200$ m$^2$ and for $1$ kg of insect protein is $L_i = 20$ m$^2$, the land-use efficiency ratio $\frac{L_b}{L_i}$ is $10$.

Accepted Answer

True

Answer

False

Question 19

In a carbon cycle model, insects release $C_i$ amount of CO$_2$ per day. If $C_i = 0.05$ g and the total population is $N = 10^6$, calculate the total CO$_2$ emission $C_{total}$ in kg per day.

Accepted Answer

50

Question 20

Given the survival probability of an insect larva is $P(s) = \frac{1}{1 + e^{-k(x - x_0)}}$, where $x$ is the environmental temperature and $x_0$ is the optimal temperature, what happens to the survival probability as $x$ increases significantly beyond $x_0$?

Accepted Answer

Option A

Answer

Option B

Answer

Option C

Answer

Option D

Comprehensive Assessment On Biodiversity And Entomological Systems Practice Tests

Practice Tests

Comprehensive Assessment on Biodiversity and Entomological Systems

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