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CBT TEST

AGR 201 CBT PRACTICE

Phil

January 11, 2025

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. What is a characteristic feature of shifting cultivation?

A. Continuous use of the same land

B. High levels of mechanization

C. Low levels of technology and input

D. Use of fertilizers

2 / 40

2. Which type of Archaebacteria produces methane?

A. Crenarchaeota

B. Euryarchaeota

C. Thaumarchaeota

D. Nanoarchaeota

3 / 40

3. What is a key characteristic of prion diseases?

A. Dependence on host enzymes for replication

B. Stability in the environment

C. Dual RNA and DNA genomes

D. Rapid replication in host cells

4 / 40

4. Which disease is associated with prions in cattle?

A. Bovine Spongiform Encephalopathy (BSE)

B. Chronic Wasting Disease

C. Creutzfeldt-Jakob Disease (CJD)

D. Fatal Familial Insomnia

5 / 40

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

A. Reverse transcriptase

B. Viral enzymes

C. Host ribosomes

D. Host enzymes

6 / 40

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

A. Apicomplexa

B. Microspora

C. Sarcomastigophora

D. Ciliophora

7 / 40

7. What is a defining characteristic of protozoa?

A. Eukaryotic and unicellular

B. Presence of a cell wall

C. Ability to photosynthesize

D. Multicellular structure

8 / 40

8. What does primary agriculture primarily involve?

A. Building residential complexes

B. Farming operations like cultivation and livestock rearing

C. Processing of milk into butter and cheese

D. Road and railway construction

9 / 40

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

A. Scineto

B. Sciento

C. Scientium

D. Scientia

10 / 40

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

A. Peptidoglycan

B. Cellulose

C. Pseudomurein

D. Chitin

11 / 40

11. What is the mode of reproduction in Archaebacteria?

A. Spore formation

B. Binary fission

C. Budding

D. Sexual reproduction

12 / 40

12. What makes Archaebacteria indifferent to major antibiotics?

A. Possession of plasmids with resistance enzymes

B. Presence of chloroplasts

C. Unique lipids in their membranes

D. Absence of cell walls

13 / 40

13. Which of the following protozoa have flagella for locomotion?

A. Amoeba

B. Paramecium

C. Plasmodium

D. Trypanosoma

14 / 40

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

A. Adsorption

B. Eclipse phase

C. Lysogeny

D. Budding

15 / 40

15. What is the main source of greenhouse gas emissions in agriculture according to the United Nations?

A. Forestry practices

B. Crop rotation techniques

C. Use of organic fertilizers

D. Livestock sector

16 / 40

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

A. Integrase

B. Reverse transcriptase

C. RNA polymerase

D. Protease

17 / 40

17. Which type of Archaebacteria oxidizes ammonia?

A. Korarchaeota

B. Thaumarchaeota

C. Euryarchaeota

D. Nanoarchaeota

18 / 40

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

A. Movement

B. Osmoregulation

C. Nutrient absorption

D. Reproduction

19 / 40

19. What type of nutrition do protozoa exhibit?

A. Photosynthetic

B. Autotrophic

C. Saprophytic

D. Holozoic

20 / 40

20. What is the main advantage of intercropping?

A. Rapid spread of diseases

B. Tailored production practices for one crop

C. Increased resource utilization efficiency

D. Easy mechanization of farming

21 / 40

21. How do amoeboids move and capture their prey?

A. Using cilia

B. Using flagella

C. Through subpellicular microtubules

D. Using pseudopodia

22 / 40

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

A. Different amino acid sequences

B. Difference in protein molecular weight

C. Presence of additional RNA

D. Unique three-dimensional configurations

23 / 40

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

A. Phagocytosis

B. Pinocytosis

C. Autotrophy

D. Diffusion

24 / 40

24. Which of the following viruses exhibits icosahedral symmetry?

A. Tobacco mosaic virus

B. Rhabdovirus

C. Polio virus

D. Rabies virus

25 / 40

25. What are viroids primarily composed of?

A. Single-stranded RNA

B. Protein coat and DNA

C. Single-stranded DNA

D. Double-stranded RNA

26 / 40

26. What is a naked virus?

A. A virus without a host

B. A virus without an envelope

C. A virus without genetic material

D. A virus without a capsid

27 / 40

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

A. Methanobrevibacter smithii

B. Thermoplasma

C. Lokiarcheota

D. Ignicoccus

28 / 40

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

A. Rainfall

B. Temperature

C. Humidity

D. Daylength

29 / 40

29. Which phylum consists of protozoa with cilia used for movement and food ingestion?

A. Labyrinthomorpha

B. Sarcodina

C. Ciliophora

D. Apicomplexa

30 / 40

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

A. Trophozoite stage

B. Sporozoite stage

C. Pellicle stage

D. Cyst stage

31 / 40

31. What is the main habitat of Crenarchaeota?

A. Human intestines

B. Hot springs and deep-sea vents

C. High-pressure areas

D. Cold oceanic regions

32 / 40

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

A. The type of envelope

B. The size of the host cell

C. The characteristics of its protomeres

D. The number of nucleic acid strands

33 / 40

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

A. Serve as fossilized microbial mats

B. Provide evidence of early atmospheric composition

C. Demonstrate ancient photosynthetic pathways

D. Indicate volcanic activity

34 / 40

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

A. Fusion

B. Splicing

C. Transduction

D. Budding

35 / 40

35. What is a virion?

A. An extracellular form of a virus

B. A type of immune cell

C. A protein complex in the nucleus

D. A type of bacterial cell

36 / 40

36. What is the primary characteristic of Archaebacteria?

A. Possession of membrane-bound organelles

B. Presence of a cellulose cell wall

C. Ability to perform photosynthesis

D. Survival in extreme conditions

37 / 40

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

A. Gram-negative cell structure

B. Membrane-bound organelles

C. Antibiotic resistance enzymes in plasmids

D. Anaerobic adaptation

38 / 40

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

A. Release of mature virions

B. Formation of inclusion bodies

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

D. Production of double-stranded RNA

39 / 40

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

A. Single-stranded DNA

B. Double-stranded DNA

C. Single-stranded RNA with DNA intermediate

D. Double-stranded RNA

40 / 40

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

A. Host organism specificity

B. Presence or absence of an envelope

C. Mode of transmission

D. Symptoms caused by the virus

Your score is

The average score is 38%

AGR 201 CBT PRACTICE

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