Free Biodiversity and Variety of Life MCQs with Answers
3,130 Biodiversity and Variety of Life MCQs from Biology, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Biological classification uses taxonomic ranks, binomial nomenclature and shared characteristics to organize life into kingdoms. The major groups include prokaryotes, protists, fungi, plants and animals, with comparisons based on cell type, cell wall, nutrition, body organization, reproduction and evolutionary relationships; prokaryotes lack a membrane-bound nucleus.
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3,130 questions · page 21 of 157
- A. Plasmogamy
- B. Karyogamy
- C. Heterokaryotization
- D. Dikaryotization
Explanation: Answer is "Karygammy"Explanation: After karyogammy or diploidization, the diploid nucleus produces a resistant cyst around it and becomes…
Correct answer: Karyogamy- A. Interbreed
- B. Reproduce
- C. Produce sterile offspring
- D. Produce fertile offspring
Explanation: Answer is "Species"Explanation: A species is a group of natural population which can interbreed freely among themselves and produce…
Correct answer: Produce fertile offspring403. Pick up the odd one:
- A. Golden shower
- B. Brinjal
- C. Purging cassia
- D. Gurmala
Explanation: Answer is "Brinjal"Explanation: See explanation of Q # 121.
Correct answer: Brinjal- A. AIDS is an immunodeficiency disease
- B. It is caused by the retrovirus HIV
- C. HIV selectively infects and kills B-lymphocytes
- D. Retroviruses have RNA genomes that replicate DNA intermediate
Explanation: "The explanation for this question will be added soon!"
Correct answer: HIV selectively infects and kills B-lymphocytes- A. DNA
- B. Protein
- C. RNA
- D. Envelope
Explanation: "The explanation for this question will be added soon!"
Correct answer: Protein406. The shape of TMV is:
- A. Spherical
- B. Rod
- C. Tadpole
- D. Pyramidal
Explanation: "The explanation for this question will be added soon!"
Correct answer: Rod- A. Cell Wall
- B. Cell Membrane
- C. Tail Fibers
- D. None
Explanation: "The explanation for this question will be added soon!"
Correct answer: Cell Membrane- A. Protein
- B. DNA
- C. Nucleoprotein
- D. RNA
Explanation: "The explanation for this question will be added soon!"
Correct answer: RNA- A. Gemini viruses
- B. Prions
- C. Viroids
- D. Satellite viruses
Explanation: This option is correct because Prions are the infectious agents composed of abnormal misfolded proteins that have the ability to induce…
Correct answer: Prions- A. Hepatitis A
- B. Hepatitis D
- C. Mad Cow disease
- D. Mysterious brain infection
Explanation: Hepatitis D (delta hepatitis) is caused by the hepatitis D virus (HDV), which is a unique RNA pathogen often classified with viroids…
Correct answer: Hepatitis D- A. Capsid
- B. Virion
- C. Nucleoprotein
- D. Core
Explanation: The capsid is the protein coat that surrounds the genetic material (either DNA or RNA) of a virus.
Correct answer: Capsid412. Viruses possess:
- A. Ribosomes to synthesize protein
- B. Organelle for its vital mechanism
- C. Either DNA or RNA
- D. None of these
Explanation: Viruses possess either DNA or RNA as their genetic material. This genetic material can be single-stranded or double-stranded, depending on…
Correct answer: Either DNA or RNA- A. Nucleus
- B. Cytoplasm
- C. Inside viral capsid
- D. None of these
Explanation: In the nucleus, Reverse transcription occurs, the viral RNA is reverse transcribed into DNA by the reverse transcriptase…
Correct answer: Nucleus- A. Poxvirus
- B. Parvovirus
- C. Reovirus
- D. Togavirus
Explanation: Pox viruses are a family of viruses that contain double-stranded DNA. This means that their genetic material is made up of two strands of…
Correct answer: Poxvirus- A. HCV
- B. HSV
- C. HIV
- D. Poxvirus
Explanation: HSV (Harpes simplex virus) particularly HSV-2, is a virus that commonly affects the genital organs.
Correct answer: HSV- A. gp31
- B. gp120
- C. gp141
- D. gp41
Explanation: gp41 is another viral envelope glycoprotein of HIV. After the initial binding of gp120 to the CD4 receptor.
Correct answer: gp41- A. DNA replication in cytoplasm
- B. Translation in cytoplasm
- C. Transcription in nucleus
- D. Reverse transcription in cytoplasm
Explanation: Translation, the process of protein synthesis, generally occurs in the cytoplasm for both prokaryotic and eukaryntic cells, including…
Correct answer: Translation in cytoplasm- A. Mitochondria
- B. Nucleus
- C. Ribosomes
- D. Endoplasmic reticulum
Explanation: Viruses often hijack host cell ribosomes for protein synthesis. They use the host's ribosomal machinery to produce viral proteins, which…
Correct answer: Ribosomes- A. 200nm
- B. 30nm
- C. 20nm
- D. 100nm
Explanation: Parvoviruses are the smallest known animal viruses, measuring only 18-26 nanometers in diameter.
Correct answer: 20nm- A. Monera
- B. Protista
- C. Fungi
- D. Animalia
Explanation: Kingdom Monera: It comprises unicellular, prokaryotic organisms, which can be heterotrophic or autotrophic, having no well-defined nucleus…
Correct answer: Animalia