Free Animal and Plant Cell MCQs with Answers
275 Animal and Plant Cell 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 and plant cells share a plasma membrane, cytoplasm, nucleus, ribosomes, mitochondria and endoplasmic reticulum, but plant cells also have a cellulose cell wall, chloroplasts and a large permanent vacuole. Questions cover organelle structure and function, differences between the two cell types, and how membranes control movement of substances.
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275 questions · page 9 of 14
- A. Flatwarms
- B. Triploblastic
- C. Coelomate
- D. Bilateral symmetry
Explanation: Platyhelminthes are triploblastic, bilaterally symmetrical flatworms, but they are acoelomate rather than coelomate because the space…
Correct answer: Coelomate- A. Calcium
- B. Silica
- C. Chitin
- D. Both A & B
Explanation: The hard exoskeleton of reef-building corals, which are coelenterates, is mainly calcium carbonate deposited by the animals.
Correct answer: Calcium- A. Blastopore
- B. Plastoquinone
- C. Blastocoel
- D. Splitting of mesoderm
Explanation: A pseudocoel is formed when the embryonic blastocoel persists as the body cavity, with mesoderm lining the organs but not completely…
Correct answer: Blastocoel- A. Nephridia
- B. Flame cells
- C. Malpighian tubules
- D. Nephrons
Explanation: Flatworms remove excess water and wastes through protonephridia containing flame cells, whose beating cilia drive fluid through tubules.
Correct answer: Flame cells- A. Hydra
- B. Obelia
- C. Aurelia
- D. None of these
Explanation: Hydra remains in the polyp form and reproduces asexually by budding, so it does not show alternation between polyp and medusa generations.
Correct answer: Hydra- A. Digestive cavity
- B. Body cavity
- C. Transporting cavity
- D. all of these
Explanation: The enteron of coelenterates is the gastrovascular cavity, where digestion occurs and through which digested nutrients and materials are…
Correct answer: all of these- A. Few millimeter wide to more than one meter tall
- B. Few centimeter wide to more than one meter tall
- C. Few decimeter wide to more than one meter tall
- D. One meter wide to more than millimeter tall.
Explanation: Sponges show a wide size range, from only a few millimetres in width to species exceeding one metre in height.
Correct answer: Few millimeter wide to more than one meter tall- A. Parietal mesoderm
- B. Visceral mesoderm
- C. Mesoderm
- D. Both A & B
Explanation: A coelom is a body cavity completely lined by mesoderm, with parietal mesoderm against the body wall and visceral mesoderm around the…
Correct answer: Both A & B- A. All animals are ingestive heterotrophs
- B. All animals are eukaryotes
- C. All animals develop from the dissimilar gametes i.e. large sperm and small egg.
- D. It is largest kingdom.
Explanation: Animals develop from dissimilar gametes, but the egg is the large non-motile gamete and the sperm is the small motile gamete, not the…
Correct answer: All animals develop from the dissimilar gametes i.e. large sperm and small egg.- A. Nematods
- B. Annelids
- C. Arthropods
- D. Molluscs
Explanation: Annelids are regarded as the first major invertebrate group with a closed circulatory system, in which blood remains within vessels.
Correct answer: Annelids- A. Lies on dorsal side
- B. Lies on ventral side
- C. Lies on lateral side
- D. Is not present
Explanation: Arthropods usually have a dorsal tubular heart or main blood vessel that pumps haemolymph forward and backward through the body.
Correct answer: Lies on dorsal side- A. Porifera
- B. Arthropoda
- C. Mollusca
- D. Chordata
Explanation: Arthropoda is the largest animal phylum, and Mollusca is generally considered the second largest in number of described species.
Correct answer: Mollusca- A. Cake urchin
- B. Sea Urchin
- C. Sea cucumber
- D. Brittle star
Explanation: A sea urchin has a compact, rounded or globular body enclosed by a rigid test and movable spines.
Correct answer: Sea Urchin- A. Cyclostomata
- B. Chondrichthyes
- C. Osteichthyes
- D. None of these
Explanation: Cyclostomes, such as lampreys and hagfishes, have long, eel-like bodies and lack paired fins.
Correct answer: Cyclostomata- A. Urochordates
- B. Cephalochordates
- C. Chordates
- D. Vertebrates
Explanation: In cephalochordates, such as Amphioxus, the notochord extends from the head region to the tail and remains present throughout life.
Correct answer: Cephalochordates- A. Lamprey
- B. Perch
- C. Plaice
- D. Dipnoi
Explanation: Dipnoi are lungfishes, named for their functional lungs that allow them to breathe atmospheric air, especially when water oxygen is low.
Correct answer: Dipnoi- A. Polyps
- B. Medusae
- C. Both of these
- D. None of these
Explanation: Medusae are the free-swimming, motile zooid form of cnidarians, whereas polyps are generally attached and cylindrical.
Correct answer: Medusae- A. Ectoderm
- B. Mesenchyme
- C. Endoderm
- D. Uterus
Explanation: In sponges, sperm released into the water are captured and carried into the mesenchyme or mesohyl, where fertilization occurs.
Correct answer: Mesenchyme- A. Detrital organic particles
- B. Zooplankton and small animals
- C. Phytoplanktons
- D. all of these
Explanation: Sponges obtain most of their food by filtering fine detrital organic particles from the water, which are taken up by collar cells and…
Correct answer: Detrital organic particles- A. Osculum
- B. Ostia
- C. Spongocoel
- D. None of these
Explanation: The osculum is the single main outlet through which water leaves a sponge after passing through its canals and spongocoel.
Correct answer: Osculum