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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- A. Myxomycota
- B. Green algae
- C. Brown algae
- D. Red algae
Explanation: Some red algae incorporate calcium carbonate in their cell walls from the ocean and take part in building coral reefs alongwith coral…
Correct answer: Red algae- A. Antheridia
- B. Ovules
- C. Fruits
- D. Archegonia
Explanation: Explanation:The term gymnosperm literally means naked seeds. The ovules in these plants are usually borne on exposed surfaces of fertile…
Correct answer: Ovules- A. Seed
- B. Archegonium
- C. Megagametophyte
- D. Ovule
Explanation: Explanation: The integumented indehiscent megasporium is called ovule. The integumented indehiscent megasporium is called ovule, not seed.
Correct answer: Ovule- A. Caesalpiniaceae
- B. Fabaceae
- C. Gramineae
- D. Mimosaceae
Explanation: Explanation:This option is correct because family Fabaceae also known as family leguminosea contains legumes and pulses.
Correct answer: Fabaceae- A. Pollination
- B. Self-Pollination
- C. Double Fertilisation
- D. Cross Pollination
Explanation: [A] Pollination is the transfer of pollen grains from male anther of a flower to the female stigma[B] Pollen is transferred from any…
Correct answer: Double Fertilisation- A. Heterocysts.
- B. Akinetes.
- C. Nostoc.
- D. Hormogonia.
Explanation: Heterocysts are specialized cells found in certain filamentous cyanobacteria that are crucial for the process of nitrogen fixation.
Correct answer: Heterocysts.- A. Spirochete
- B. E. coli
- C. Cyanobacteria
- D. Pseudomonas
Explanation: Explanation:This option is correct because pseudomonas is an aerobic bacteria.
Correct answer: Pseudomonas- A. Microscopic bacteria
- B. Anaerobic bacteria
- C. Aerobic bacteria
- D. Methanogenic bacteria
Explanation: Explanation:The giant amoebas obtain energy from methanogenic bacteria which reside inside them, giant amoebas inhabit the mud at the…
Correct answer: Methanogenic bacteria- A. Hyphomicrobium
- B. Haemophilus aquaticus
- C. Haemophillus malariae
- D. Haemophillus infulenzae
Explanation: H. influenzae was the first free-living organism to have its entire genome sequenced.
Correct answer: Haemophillus infulenzae- A. Bacteria
- B. Fungi Cell
- C. Algae
- D. Cortex cells
Explanation: Bacterias have their cell walls made from peptidoglycan which is known to have sugars and amino acids as its constituents.
Correct answer: Bacteria- A. Round
- B. Oval
- C. Spiral
- D. Rod
Explanation: Escherichia coli is an example of rod shaped bacteria, also called Bacilli.
Correct answer: Rod- A. Spirilla
- B. Bacilli
- C. Spirochete
- D. Cocci
Explanation: Bacilli are rod shaped bacteria. Cocci are spherical shaped bacteria. Spirillas are corkscrew shaped bacteria.
Correct answer: Bacilli- A. Plant & Algae
- B. Algae & Fungi
- C. Fungi & Archaea
- D. Bacteria & Archaea
Explanation: Bacteria and Archaea are the groups where cell walls may be absent. While many bacteria have cell walls, there are some bacteria such as…
Correct answer: Bacteria & Archaea- A. 02
- B. 04
- C. 08
- D. 16
Explanation: Sarcina is a genus of bacteria that divides in three planes, resulting in the formation of packets of cells arranged in a cube-like…
Correct answer: 08- A. Cocci
- B. Bacilli
- C. Pleomorphic
- D. Spiral
Explanation: Helicobacter pylori exists as both a helix-shaped form (classified as a curved rod) and a coccoid form.
Correct answer: Pleomorphic- A. Entamoeba histolytica.
- B. Zooflagellates.
- C. Trypanosoma.
- D. Ciliates.
Explanation: African Trypanosomiasis, also known as "sleeping sickness", is caused by microscopic parasites of the species Trypanosoma brucei.
Correct answer: Trypanosoma.- A. Apicomplexans
- B. Annelida
- C. Platyhelminthes
- D. Arthropods
Explanation: Explanation:A large group of parasitic protozoa, some of which causes various diseases such as malaria to humans, are…
Correct answer: Apicomplexans- A. Leguminosae
- B. Soldnacoae
- C. Brassicaceae
- D. Graminea
Explanation: Bauhinia variegata is a species of flowering plant in the legume family, Fabaceae.
Correct answer: Brassicaceae- A. Poaceae
- B. Fabaceae
- C. Brassicaceae
Explanation: Raphanus sativus, commonly known as radish, belongs to the family Brassicaceae (also known as Cruciferae).
Correct answer: Brassicaceae- A. Gram
- B. Tomato
- C. Potato
- D. Red pepper
Explanation: The correct answer is Tomato. Lycopersicum esculentum is the scientific name for the tomato plant, which is part of the nightshade family…
Correct answer: Tomato