Take your time to read instructions before taking this test.

There are 40 questions which you are to answer in 15 minutes that gives you roughly 30 seconds per question.

If you can get at least 60%, you can be rest assured that you’ll ace AGR 201 exam

In a normal exam you will be asked between 40 – 60 questions but I only arranged 40 questions

Note

Do not be in a hurry to answer the questions
Do not waste time on a question you don’t know
Move as fast as possible and starting with questions that don’t have calculation first to save time
Always crosscheck
Don’t be in a hurry to submit, you are not in a competition
Don’t be scared. Getting an A is easy
Don’t be over confident, you can end up a D, E or F. Calm your blood, no be only you sabi book

Please do well to use our comment box incase there’s a message you want to pass to us

70 – 100 A

60 – 69 B

50 – 59 C

45 – 49 D

40 – 44 E

0 – 39 F

I wish you success

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AGR 201

1 / 40

1. Which type of Archaebacteria oxidizes ammonia?

A. Thaumarchaeota

B. Nanoarchaeota

C. Euryarchaeota

D. Korarchaeota

2 / 40

2. Which protozoan group includes Plasmodium, the causative agent of malaria?

A. Apicomplexa

B. Sarcomastigophora

C. Ciliophora

D. Microspora

3 / 40

3. Which cycle describes a virus integrating its genetic material into the host genome and remaining latent?

A. Lysogenic cycle

B. Budding cycle

C. Replication cycle

D. Lytic cycle

4 / 40

4. Which of the following is NOT a type of land tenure system?

A. Leasehold

B. Photosynthetic

C. Inheritance

D. Communal

5 / 40

5. What is the main habitat of Crenarchaeota?

A. Hot springs and deep-sea vents

B. High-pressure areas

C. Human intestines

D. Cold oceanic regions

6 / 40

6. Which protein is responsible for integrating the HIV genome into the host chromosome?

A. RNA polymerase

B. Integrase

C. Reverse transcriptase

D. Protease

7 / 40

7. What is a key characteristic of prion diseases?

A. Dependence on host enzymes for replication

B. Dual RNA and DNA genomes

C. Stability in the environment

D. Rapid replication in host cells

8 / 40

8. What kind of reproduction is most common in protozoa?

A. Budding

B. Spore formation

C. Binary fission

D. Sexual reproduction

9 / 40

9. Which of the following Archaebacteria is found in human guts?

A. Ignicoccus

B. Methanobrevibacter smithii

C. Thermoplasma

D. Lokiarcheota

10 / 40

10. What is the main advantage of intercropping?

A. Increased resource utilization efficiency

B. Easy mechanization of farming

C. Rapid spread of diseases

D. Tailored production practices for one crop

11 / 40

11. What mechanism is primarily responsible for the replication of viroids?

A. Viral enzymes

B. Host enzymes

C. Host ribosomes

D. Reverse transcriptase

12 / 40

12. What is the primary function of a contractile vacuole in protozoa?

A. Osmoregulation

B. Movement

C. Reproduction

D. Nutrient absorption

13 / 40

13. What triggers the activation of cytotoxic T-cells in a virally infected cell?

A. Production of double-stranded RNA

B. Release of mature virions

C. Expression of viral protein on the surface of the plasma membrane

D. Formation of inclusion bodies

14 / 40

14. What is the composition of the Archaebacterial cell wall?

A. Cellulose

B. Peptidoglycan

C. Pseudomurein

D. Chitin

15 / 40

15. What is the mode of reproduction in Archaebacteria?

A. Binary fission

B. Spore formation

C. Budding

D. Sexual reproduction

16 / 40

16. Which type of Archaebacteria produces methane?

A. Thaumarchaeota

B. Nanoarchaeota

C. Crenarchaeota

D. Euryarchaeota

17 / 40

17. Which of the following viruses exhibits icosahedral symmetry?

A. Polio virus

B. Rabies virus

C. Rhabdovirus

D. Tobacco mosaic virus

18 / 40

18. What is a defining characteristic of protozoa?

A. Eukaryotic and unicellular

B. Multicellular structure

C. Presence of a cell wall

D. Ability to photosynthesize

19 / 40

19. How do amoeboids move and capture their prey?

A. Using pseudopodia

B. Using cilia

C. Through subpellicular microtubules

D. Using flagella

20 / 40

20. Which type of nucleic acid is found in a virus?

A. Either DNA or RNA, but not both

B. Only DNA

C. Only RNA

D. Both DNA and RNA simultaneously

21 / 40

21. What are viroids primarily composed of?

A. Single-stranded DNA

B. Single-stranded RNA

C. Protein coat and DNA

D. Double-stranded RNA

22 / 40

22. What is the main structural difference between normal cell proteins and prion proteins?

A. Difference in protein molecular weight

B. Presence of additional RNA

C. Different amino acid sequences

D. Unique three-dimensional configurations

23 / 40

23. What is the primary characteristic of Archaebacteria?

A. Presence of a cellulose cell wall

B. Ability to perform photosynthesis

C. Survival in extreme conditions

D. Possession of membrane-bound organelles

24 / 40

24. What is the role of stromatolites in studying early life?

A. Indicate volcanic activity

B. Provide evidence of early atmospheric composition

C. Serve as fossilized microbial mats

D. Demonstrate ancient photosynthetic pathways

25 / 40

25. What determines the helical capsid's diameter in helical viruses?

A. The number of nucleic acid strands

B. The size of the host cell

C. The type of envelope

D. The characteristics of its protomeres

26 / 40

26. What is the genetic material of a virus enclosed in?

A. Capsid

B. Envelope

C. Ribosome

D. Mitochondria

27 / 40

27. What does the term "cytolytic bacteriophage" refer to?

A. A virus that remains dormant in the host cell

B. A virus that causes lysis of the host cell

C. A virus that integrates into the host DNA

D. A virus that only infects animal cells

28 / 40

28. What is the mode of nutrition in protozoa that use pseudopodia to engulf their prey?

A. Diffusion

B. Phagocytosis

C. Autotrophy

D. Pinocytosis

29 / 40

29. Which of the following is the reproductive stage of protozoa?

A. Pellicle stage

B. Trophozoite stage

C. Cyst stage

D. Sporozoite stage

30 / 40

30. What is the process of a virus acquiring an envelope during replication called?

A. Budding

B. Fusion

C. Transduction

D. Splicing

31 / 40

31. What is a characteristic feature of shifting cultivation?

A. Use of fertilizers

B. High levels of mechanization

C. Low levels of technology and input

D. Continuous use of the same land

32 / 40

32. What does primary agriculture primarily involve?

A. Farming operations like cultivation and livestock rearing

B. Road and railway construction

C. Building residential complexes

D. Processing of milk into butter and cheese

33 / 40

33. What is a major environmental problem caused by intensive agriculture?

A. Reduction in water evaporation

B. Depletion of soil fertility

C. Reduction of pest resistance

D. Increased biodiversity

34 / 40

34. Which term describes Archaebacteria’s ability to resist antibiotics?

A. Anaerobic adaptation

B. Membrane-bound organelles

C. Antibiotic resistance enzymes in plasmids

D. Gram-negative cell structure

35 / 40

35. What process describes the incorporation of a viral genome into the host chromosome?

A. Adsorption

B. Lysogeny

C. Eclipse phase

D. Budding

36 / 40

36. The word "science" is derived from which Latin word?

A. Scineto

B. Scientium

C. Scientia

D. Sciento

37 / 40

37. What does the Hierarchical virus classification system use as one of its main criteria?

A. Mode of transmission

B. Presence or absence of an envelope

C. Host organism specificity

D. Symptoms caused by the virus

38 / 40

38. What makes Archaebacteria indifferent to major antibiotics?

A. Presence of chloroplasts

B. Possession of plasmids with resistance enzymes

C. Unique lipids in their membranes

D. Absence of cell walls

39 / 40

39. Which climatic factor is most important for Nigerian agriculture?

A. Temperature

B. Daylength

C. Rainfall

D. Humidity

40 / 40

40. What type of nucleic acid is present in Retroviruses?

A. Double-stranded DNA

B. Double-stranded RNA

C. Single-stranded DNA

D. Single-stranded RNA with DNA intermediate

Your score is

The average score is 38%

AGR 201 CBT PRACTICE

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