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 11 of 14
- A. Arthropoda
- B. Gastropoda
- C. Pelecypoda
- D. Cephalopoda
Explanation: Arthropods, gastropods and pelecypods generally have open circulation, but cephalopods have a closed circulatory system in which blood…
Correct answer: Cephalopoda- A. Mesenchyme
- B. Sclerenchyma
- C. Chlorenchyma
- D. Mesoderm
Explanation: Mesenchyme is a loose, gelatinous supporting material that may be largely non-cellular in simple animals such as sponges, although…
Correct answer: Mesenchyme- A. Pseudocoelous
- B. Schizocoelous
- C. Enterocoelous
- D. Emphicoelous
Explanation: In schizocoelous development, the coelom forms by splitting of solid masses of mesoderm.
Correct answer: Schizocoelous- A. All of them have blood vascular system
- B. They may be coelomate pseudocoelomate or acoelomate
- C. They are included in grade bilaterian
- D. All of them have digestive system
Explanation: Triploblasts possess ectoderm, mesoderm and endoderm, but not all have a blood vascular system because simple triploblastic animals can…
Correct answer: All of them have blood vascular system- A. Protozoa
- B. Porifera
- C. Echinodermata
- D. None of these
Explanation: Echinoderms have bilateral symmetry in their larval stage but generally radial, specifically pentaradial, symmetry as adults.
Correct answer: Echinodermata- A. Protozoa
- B. Porifera
- C. Cnidaria
- D. All of these
Explanation: Cnidarians such as Hydra, jellyfish and sea anemones have body parts arranged around a central oral-aboral axis, producing radial…
Correct answer: Cnidaria- A. Deuterosomes
- B. Proterosomes
- C. Hemichordates
- D. Aschelminthes
Explanation: Aschelminthes, including roundworms, are pseudocoelomates because their body cavity is not completely lined by mesoderm.
Correct answer: Aschelminthes- A. Limmnetic zone
- B. Littoral zone
- C. Profundal zone
- D. None of these
Explanation: The littoral zone is the shallow, well-lit region near a lake shore, where light, oxygen, nutrients and varied habitats support many…
Correct answer: Littoral zone- A. Diffusion
- B. Osmosis
- C. Phagocytosis
- D. Plasmolysis
Explanation: Phagocytosis is the engulfment of large solid particles or molecules by extensions of the cell membrane, forming an internal vesicle for…
Correct answer: Phagocytosis- A. It contains protein molecules embedded in lipid bilayer
- B. It is a differentially permeable membrane.
- C. It contains charged pores thus ions being charged particles cross cell membrance much easier than neutral particles.
- D. It may get infolded to engulf solid or liquid material.
Explanation: The membrane is selectively permeable, contains embedded proteins, and can fold inward during endocytosis to engulf material.
Correct answer: It contains charged pores thus ions being charged particles cross cell membrance much easier than neutral particles.- A. Epidermis
- B. Muscle cells
- C. Gut
- D. Notochord
Explanation: In ascidian embryos, the yellow cytoplasmic region contains determinants that direct cells to develop into muscle tissue.
Correct answer: Muscle cells- A. Short day plant
- B. Long day plant
- C. Day neutral plant
- D. None of these
Explanation: Far-red light converts the active Pfr form of phytochrome into the Pr form, which favours flowering in short-day plants by making the…
Correct answer: Short day plant- A. Stroma
- B. Grana
- C. Thylakoid
- D. Outer membrane
Explanation: Carbon dioxide is fixed into carbohydrate during the Calvin cycle, which takes place in the chloroplast stroma.
Correct answer: Stroma- A. Active transport
- B. Passive transport
- C. Co-transport
- D. Counter transport
Explanation: Passive transport moves substances across the membrane down their concentration or electrochemical gradient without ATP expenditure…
Correct answer: Passive transport- A. 20-40%
- B. 40-50%
- C. 60-80%
- D. 80-100%
Explanation: Membrane composition varies among cell types, but proteins commonly make up about 60 to 80 percent of the membrane's dry mass because they…
Correct answer: 60-80%- A. Theodor Schwann and Schleiden
- B. Rudolph Virchows
- C. Louis Pasteur
- D. Both b and c
Explanation: Rudolf Virchow extended cell theory with the principle that every new cell arises from a pre-existing cell, expressed as omnis cellula e…
Correct answer: Rudolph Virchows- A. Schwann
- B. Schleiden
- C. Robert Hook
- D. Both a and b
Explanation: Robert Hooke coined the term cell in 1665 after observing box-like compartments in cork under a microscope.
Correct answer: Robert Hook- A. Crustacean
- B. Insecta
- C. Arachnida
- D. Myriapoda
Explanation: Insecta is the most widespread and diverse arthropod class, with members occupying nearly every terrestrial and freshwater habitat.
Correct answer: Insecta- A. 5
- B. 10
- C. 20
- D. 40
Explanation: A cockroach has 10 pairs of spiracles, with two thoracic pairs and eight abdominal pairs.
Correct answer: 20- A. Ferns
- B. Whisk ferns
- C. Gymnosperms
- D. Angiosperms
Explanation: In angiosperms, one male gamete fuses with the egg and the other fuses with the polar nuclei, producing the zygote and endosperm…
Correct answer: Angiosperms