Free Cell Structure and Function MCQs with Answers
2,478 Cell Structure and Function MCQs from Biology, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Animal, plant, prokaryotic and eukaryotic cells are compared through their membranes, cell walls, nuclei and cytoplasmic organelles. The work includes the structures and functions of mitochondria, chloroplasts, ribosomes, endoplasmic reticulum, Golgi apparatus and lysosomes, as well as chromosome organization and the distinction between chromatin and chromosomes.
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Read the Cell Structure and Function notesFree MDCAT chapter notes with key terms2,478 questions · page 9 of 124
- A. Endodermis
- B. Mesophyll
- C. Chitin
- D. Epidermis
Explanation: The chitinous cuticle of an arthropod is secreted by the underlying epidermal cells.
Correct answer: Epidermis- A. Ligule
- B. Radula
- C. Mantle
- D. Muscle
Explanation: The radula is a rasping, tongue-like ribbon bearing many horny teeth, used by most molluscs to scrape or cut food.
Correct answer: Radula- A. Cephalopodsxc
- B. Gastropods
- C. Bivalves
- D. Athropods
Explanation: Snails are gastropod molluscs, a group characterised by a distinct head, muscular foot and usually a single coiled shell.
Correct answer: Gastropods- A. Placenta
- B. Notochord
- C. Cranianta
- D. Ligule
Explanation: The notochord is a flexible supporting rod lying along the mid-dorsal side of chordate embryos and is surrounded by connective tissue.
Correct answer: Notochord- A. 25,000
- B. 50,000
- C. 100,000
- D. 10,00,000Educational Resources
Explanation: Traditional biology texts commonly give approximately 50,000 living species in the phylum Chordata, including tunicates, lancelets and…
Correct answer: 50,000- A. Pisces
- B. Craniata
- C. Aves
- D. Amphibia
Explanation: Vertebrates are also called Craniata because they possess a cranium surrounding the brain.
Correct answer: Craniata- A. Frogs
- B. Reptiles
- C. Amphibinas
- D. Jawless fishes
Explanation: Jawless fishes, such as lampreys and hagfishes, retain primitive vertebrate features and lack jaws.
Correct answer: Jawless fishes- A. Cartilaginous fishes
- B. Bony fishes
- C. Running fishes
- D. Jawless fishes
Explanation: Scoliodon, or dogfish, has a skeleton made mainly of cartilage, so it belongs to the cartilaginous fishes.
Correct answer: Cartilaginous fishes- A. Primary Xylem and secondary xylem.
- B. Primary xylem and secondary phloem.
- C. Primary xylem and primary phloem
- D. Secondary xylem and secondary phloem.
Explanation: In a young dicot stem, vascular cambium first develops from dividing cells between the primary xylem and primary phloem, forming a cambium…
Correct answer: Primary xylem and primary phloem- A. Cork cambium
- B. Pith.
- C. Vascular cambium.
- D. Both a and c
Explanation: Secondary growth increases stem or root girth through the vascular cambium, which forms secondary xylem and phloem, and the cork cambium…
Correct answer: Both a and c- A. Tracheids
- B. Sclereids
- C. Trachea
- D. Collenchyma cells
Explanation: Tracheids are long, narrow, lignified cells that provide both support and water conduction, and they are generally more elongated than…
Correct answer: Tracheids- A. Cellulose.
- B. Peptidoglycan and murein.
- C. Lignin.
- D. Pectin.
Explanation: Sclerenchyma cells have thick secondary walls impregnated with lignin, making them hard and mechanically strong after maturity.
Correct answer: Lignin.- A. Living cells of epidermis with higher turgor pressure.
- B. Living cells of cortex and pith with higher turgor pressure.
- C. Collenchyma cells
- D. All of these
Explanation: Young herbaceous organs receive support from turgid living cells in the epidermis, cortex and pith, while collenchyma provides additional…
Correct answer: All of these- A. Anthoceropsida
- B. Bryopsida
- C. Hepaticopsida
- D. Psilopsida
Explanation: Hornworts are placed in the class Anthoceropsida, characterised by a horn-like sporophyte that grows from the gametophyte.
Correct answer: Anthoceropsida- A. Bryophytes like amphibian ancestors are one of the most primitive organisms in this world.
- B. Bryophytes like amphibian live in damp shady places and close to water body.
- C. Amphibians have close relation with bryophytes in their habitat.
- D. All of these
Explanation: Bryophytes are called the amphibians of the plant kingdom because they live on land but require damp conditions or water for the movement…
Correct answer: Bryophytes like amphibian live in damp shady places and close to water body.- A. Psilopsida
- B. Lycopsida
- C. Sphenopsida
- D. Prteropsida
Explanation: Equisetum belongs to Sphenopsida, also called the horsetail group, whose stems commonly have distinct nodes and internodes.
Correct answer: Sphenopsida- A. Psilopsids
- B. Lycopsids
- C. Sphenopsids
- D. Prteropsids
Explanation: Sphenopsids are called arthrophytes because their jointed, ribbed stems have conspicuous nodes and internodes, as seen in Equisetum.
Correct answer: Sphenopsids- A. Homosporous
- B. Hetrosporous
- C. Both depending upon the conditions
- D. None of these
Explanation: Selaginella is heterosporous, producing small microspores in microsporangia and larger megaspores in megasporangia.
Correct answer: Hetrosporous- A. Rhynia
- B. Psilophyton
- C. Psilotum
- D. Cooksonia
Explanation: Psilotum is a living representative of Psilopsida, the whisk-fern group.
Correct answer: Psilotum- A. Algae
- B. Bacteria
- C. Protozoa
- D. Fungus
Explanation: The underground gametophyte of Psilopsida lacks chlorophyll and obtains nourishment through a symbiotic association with fungi.
Correct answer: Fungus