Question 1

Which of the following best describes descent with modification as explained by Darwin?

Accepted Answer

The explanation for the diversity of life through gradual changes in inherited traits over generations.

Question 2

A population of beetles is exposed to a new pesticide. After several generations, most beetles are resistant. Which evolutionary mechanism is most likely responsible for this change?

Accepted Answer

Natural selection

Question 3

Which equation is used to calculate allele frequencies in a population under Hardy-Weinberg equilibrium?

Accepted Answer

$$p^2 + 2pq$$ + $$q^2 = 1$

Question 4

A researcher observes that two species of frogs in the same pond breed at different times of the year. What type of reproductive isolation is this?

Accepted Answer

Temporal isolation

Question 5

Which of the following is NOT a requirement for natural selection to occur?

Accepted Answer

Individuals must choose their mates

Question 6

In a population, the frequency of allele $$A is$$ $$0.7$$ and allele $$a is$$ $$0.3. $$What is the expected frequency of heterozygotes ($$Aa) $$under Hardy-Weinberg equilibrium?

Accepted Answer

$$0.42$$

Question 7

Which of the following best explains why camouflage is considered an evolutionary adaptation?

Accepted Answer

It allows individuals to blend in and avoid predation, increasing their chances of survival and reproduction.

Question 8

Which of the following is an example of a derived trait?

Accepted Answer

A trait shared by a set of species but not present in their ancestor.

Question 9

A population of finches on an island experiences a drought, and only large seeds are available. Over time, the average beak size increases. What type of selection is this?

Accepted Answer

Directional selection

Question 10

Which of the following is NOT a basic plant organ?

Accepted Answer

Flower

Question 11

Which plant tissue is responsible for transporting water and nutrients throughout the plant?

Accepted Answer

Vascular

Question 12

Which of the following is NOT a mechanism that consistently causes adaptive evolution?

Accepted Answer

Genetic drift

Question 13

Which of the following best describes homology?

Accepted Answer

Similarity due to shared ancestry

Question 14

Which of the following is NOT a component of the biological species concept?

Accepted Answer

Members of a species look identical

Question 15

Which of the following factors would NOT contribute to allopatric speciation?

Accepted Answer

Gene flow between the two populations is extensive

Question 16

Which of the following is an example of postzygotic reproductive isolation?

Accepted Answer

Mating occurs but offspring are sterile

Question 17

Which structure connects the leaf blade to the stem in a plant?

Accepted Answer

Petiole

Question 18

Which of the following is NOT a modified epidermal cell?

Accepted Answer

Collenchyma

Question 19

Which statement is INCORRECT about xylem?

Accepted Answer

They are an example of parenchyma

Question 20

Where is the mesophyll located in a plant?

Accepted Answer

Leaves

General Biology: Evolution, Phylogeny, and Plant Structure Study Guide

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