Question 1

Which of the following best describes microevolution?

Accepted Answer

The change in allele frequencies within a population over generations.

Question 2

A population of birds is separated by a newly formed river, preventing them from interbreeding. Over time, the two groups evolve into distinct species. This is an example of:

Accepted Answer

Allopatric speciation

Question 3

Which of the following is a post-zygotic reproductive barrier?

Accepted Answer

Hybrid sterility

Question 4

In Lake Victoria, cichlid fish have diversified into many species due to female preference for specific male coloration. This is an example of:

Accepted Answer

Sexual selection

Question 5

Which process can result in the rapid formation of a new plant species due to errors in meiosis leading to extra sets of chromosomes?

Accepted Answer

Sympatric speciation via polyploidy

Question 6

Which of the following best explains why viruses are not considered living organisms?

Accepted Answer

They cannot carry out metabolism or reproduce independently.

Question 7

During the lytic cycle of a bacteriophage, which of the following occurs?

Accepted Answer

The host cell is immediately destroyed as new viruses are produced.

Question 8

Which of the following statements about R plasmids in bacteria is correct?

Accepted Answer

They confer resistance to antibiotics.

Question 9

Which of the following is a characteristic of gram-negative bacteria?

Accepted Answer

They have an outer membrane and stain pink.

Question 10

Which process describes the conversion of atmospheric nitrogen ($$N_2) $$into ammonia ($$NH_3) by $$certain prokaryotes?

Accepted Answer

Nitrogen fixation

Question 11

Which of the following best describes adaptive radiation?

Accepted Answer

The rapid evolution of many diverse species from a common ancestor.

Question 12

Which of the following is the correct hierarchical sequence for classifying organisms?

Accepted Answer

Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species

Question 13

A fossil is found to contain 25% of its original radioactive carbon-14. If the half-life of carbon-14 is 5,730 years, approximately how old is the fossil?

$$N = N_0$ 	imes (1/2$$)^{t/T_{1/2}$$}$$

Accepted Answer

11,460 years

Question 14

Which of the following is a function of the plant meristem?

Accepted Answer

Producing new cells for growth.

Question 15

Which of the following best describes the difference between the life cycles of gymnosperms and angiosperms?

Accepted Answer

Angiosperms produce seeds enclosed in fruit, while gymnosperms produce naked seeds.

Question 16

Which of the following is true about the heterokaryotic phase in the fungal life cycle?

Accepted Answer

It is a phase where cells contain two or more genetically distinct nuclei.

Question 17

Which of the following best describes the function of mycorrhizae?

Accepted Answer

They form a mutualistic association with plant roots, enhancing nutrient uptake.

Question 18

Which of the following is a real-world example of bioremediation?

Accepted Answer

Using bacteria to clean up oil spills in the ocean.

Question 19

Which of the following protists live symbiotically with corals and are essential for reef health?

Accepted Answer

Dinoflagellates

Question 20

Which of the following best describes the process of conjugation in bacteria?

Accepted Answer

Transfer of DNA from one bacterium to another via a pilus.

Comprehensive Study Notes: Evolution, Viruses, Prokaryotes, Protists, Plants, and Fungi

Study Guide - Practice Questions

Study Guide - Flashcards