Class 6/Question Bank
Created by Titas Mallick
Biology Teacher • M.Sc. Botany • B.Ed. • CTET (CBSE) • CISCE Examiner
Created by Titas Mallick
Biology Teacher • M.Sc. Botany • B.Ed. • CTET (CBSE) • CISCE Examiner
Questions on The Cell
Subject: Biology
Topic: The Cell - Plant and Animal Cell Organelles
Total Questions: 250
Duration: 3 Hours
Maximum Marks: 400
Instructions: Choose the correct answer from the given options. Each question carries 1 mark. Total Questions: 100 Total Marks: 100
The basic structural and functional unit of all known organisms is: a) Tissue b) Cell c) Organ d) Organ system
Which of the following is the smallest unit of life that can replicate independently? a) Atom b) Molecule c) Cell d) Tissue
Plant cells are classified as: a) Prokaryotic cells b) Eukaryotic cells c) Viral cells d) Bacterial cells
The cell wall of plant cells is primarily made of: a) Protein b) Lipid c) Cellulose d) Starch
Which organelle is absent in animal cells? a) Nucleus b) Mitochondria c) Chloroplast d) Ribosome
The cell membrane is composed of: a) Single protein layer b) Double protein layer c) Lipid bilayer d) Cellulose layer
Chloroplasts are found in: a) Animal cells only b) Plant cells only c) Both plant and animal cells d) Bacterial cells only
The process of photosynthesis occurs in: a) Mitochondria b) Nucleus c) Chloroplasts d) Vacuoles
The large central vacuole in plant cells can occupy up to what percentage of cell volume? a) 50% b) 70% c) 80% d) 90%
The membrane surrounding the vacuole is called: a) Cell membrane b) Nuclear envelope c) Tonoplast d) Plastid membrane
Which structure provides rigidity to plant cells? a) Cell membrane b) Cell wall c) Cytoplasm d) Nucleus
The control center of the cell is: a) Mitochondria b) Nucleus c) Ribosome d) Vacuole
DNA in eukaryotic cells is organized into: a) Plasmids b) Chromosomes c) Ribosomes d) Plastids
The nuclear envelope is composed of: a) Single membrane b) Double membrane c) Triple membrane d) No membrane
Chromoplasts are responsible for: a) Photosynthesis b) Storage c) Pigment synthesis d) Protein synthesis
Leucoplasts are primarily involved in: a) Photosynthesis b) Storage of starch, oils, proteins c) Cell division d) Waste removal
The jelly-like substance filling the cell is called: a) Nucleoplasm b) Cytoplasm c) Protoplasm d) Chloroplasm
The fluid portion of cytoplasm is known as: a) Cytosol b) Organelles c) Inclusions d) Vacuoles
Turgor pressure in plant cells is maintained by: a) Cell wall b) Cell membrane c) Vacuole d) Nucleus
Which of the following prevents excessive water uptake in plant cells? a) Cell membrane b) Cell wall c) Vacuole d) Cytoplasm
Animal cells typically have: a) One large vacuole b) No vacuoles c) Several small vacuoles d) Two large vacuoles
The cell membrane is described as: a) Fully permeable b) Impermeable c) Selectively permeable d) Semi-solid
Which organelle contains chlorophyll? a) Mitochondria b) Nucleus c) Chloroplast d) Ribosome
The outermost layer of an animal cell is: a) Cell wall b) Cell membrane c) Nuclear envelope d) Cytoplasm
Plant cell nucleus is often: a) Central b) Pushed to periphery c) Absent d) Multiple
The site of many metabolic reactions in the cell is: a) Nucleus b) Cell wall c) Cytoplasm d) Cell membrane
Which structure is rigid and made of cellulose? a) Cell membrane b) Nuclear envelope c) Cell wall d) Tonoplast
Plastids are: a) Present in both plant and animal cells b) Present only in plant cells c) Present only in animal cells d) Absent in eukaryotic cells
The genetic material of the cell is stored in: a) Cytoplasm b) Vacuole c) Nucleus d) Cell membrane
Which membrane controls the movement of substances into and out of the cell? a) Nuclear envelope b) Cell membrane c) Tonoplast d) Cell wall
The shape of plant cells is maintained by: a) Cytoplasm b) Nucleus c) Cell wall d) Vacuole
Animal cells lack which of the following structures? a) Nucleus b) Cell membrane c) Cell wall d) Cytoplasm
The location of cell membrane in plant cells is: a) Outside cell wall b) Inside cell wall c) Same as cell wall d) Absent
Which organelle is involved in temporary storage in animal cells? a) Large vacuole b) Small vacuoles c) Nucleus d) Cell wall
The primary function of chloroplasts is: a) Storage b) Protection c) Photosynthesis d) Reproduction
Light energy is converted into chemical energy in: a) Mitochondria b) Nucleus c) Chloroplasts d) Ribosomes
The cell wall is located: a) Inside the cell membrane b) Outside the cell membrane c) Same as cell membrane d) Within the nucleus
Which structure provides structural support to plant cells? a) Cytoplasm b) Cell wall c) Nucleus d) Small vacuoles
The nuclear envelope encloses: a) Cytoplasm b) Cell membrane c) Genetic material d) Vacuole
Embedded proteins in cell membrane help in: a) Structure only b) Function only c) Both structure and function d) Neither structure nor function
The cell theory states that cell is the basic unit of: a) Matter b) Life c) Energy d) Time
Eukaryotic cells are characterized by: a) Absence of nucleus b) Presence of nucleus c) Multiple nuclei d) No genetic material
The tonoplast surrounds: a) Nucleus b) Chloroplast c) Vacuole d) Cell membrane
Which organelle can occupy most of the plant cell volume? a) Nucleus b) Chloroplast c) Central vacuole d) Cell wall
Animal cells are bounded by: a) Cell wall only b) Cell membrane only c) Both cell wall and membrane d) Nuclear envelope
The semi-permeable nature of cell membrane means: a) Nothing can pass through b) Everything can pass through c) Selective passage of substances d) Only water can pass through
Plastids include all except: a) Chloroplasts b) Chromoplasts c) Leucoplasts d) Ribosomes
The function of leucoplasts is: a) Photosynthesis b) Pigmentation c) Storage d) Protein synthesis
Cell communication is facilitated by: a) Cell wall b) Cell membrane c) Nucleus d) Vacuole
The movement of organelles within the cell occurs in: a) Cell wall b) Nucleus c) Cytoplasm d) Vacuole
Which statement about plant cell wall is incorrect? a) It is rigid b) It is made of cellulose c) It is present inside cell membrane d) It provides protection
The control of cellular activities is managed by: a) Cell membrane b) Cytoplasm c) Nucleus d) Vacuole
Chromosomes are found in: a) Cytoplasm b) Nucleus c) Cell membrane d) Vacuole
The double membrane around nucleus is called: a) Cell membrane b) Nuclear envelope c) Tonoplast d) Plastid membrane
Which is true about animal cell vacuoles? a) One large central vacuole b) Multiple small vacuoles c) No vacuoles d) Two large vacuoles
The primary difference between plant and animal cells is: a) Presence of nucleus b) Presence of cell membrane c) Presence of cell wall d) Presence of cytoplasm
Metabolic reactions primarily occur in: a) Nucleus b) Cell wall c) Cytoplasm d) Cell membrane
The boundary between cell and environment in animal cells is: a) Cell wall b) Cell membrane c) Nuclear envelope d) Cytoplasm
Which organelle is membrane-bound and contains chlorophyll? a) Ribosome b) Mitochondria c) Chloroplast d) Nucleus
The passage of substances across cell membrane is: a) Uncontrolled b) Controlled c) Blocked d) Random
Plant cells differ from animal cells primarily due to presence of: a) Nucleus b) Cell membrane c) Chloroplasts d) Cytoplasm
The large central vacuole provides: a) Nutrients only b) Support only c) Storage only d) Both support and storage
Which structure is absent in animal cells but present in plant cells? a) Nucleus b) Cell membrane c) Plastids d) Cytoplasm
The genetic material in nucleus is organized as: a) RNA b) Proteins c) Chromosomes d) Enzymes
Cell membrane proteins are involved in: a) Structure b) Transport c) Recognition d) All of the above
The cytosol is: a) Solid portion of cytoplasm b) Fluid portion of cytoplasm c) Same as nucleus d) Same as vacuole
Which organelle maintains turgor pressure? a) Nucleus b) Cell wall c) Vacuole d) Cell membrane
The cell wall prevents: a) Cell division b) Excessive water uptake c) Photosynthesis d) Respiration
Animal cells have cell membrane as their: a) Inner boundary b) Outer boundary c) Middle layer d) Core structure
The site of photosynthesis is: a) Entire plant cell b) Cell wall c) Chloroplasts d) Vacuole
Which is not a function of cell wall? a) Structural support b) Protection c) Shape maintenance d) Photosynthesis
The nucleus controls: a) Growth only b) Metabolism only c) Reproduction only d) All cellular activities
Plastids are classified based on: a) Size b) Shape c) Function and pigments d) Location
The membrane around genetic material is: a) Single-layered b) Double-layered c) Triple-layered d) No membrane
Small vacuoles in animal cells are involved in: a) Permanent storage b) Temporary storage c) Photosynthesis d) Genetic control
The flexible outer boundary of animal cells is: a) Cell wall b) Cell membrane c) Nuclear envelope d) Cytoplasm
Which provides mechanical support to plants? a) Cell membrane b) Nucleus c) Cell wall d) Small vacuoles
The location of cell membrane in animal cells is: a) Inside nucleus b) Outside cell wall c) Outermost layer d) Within cytoplasm
Chlorophyll is contained in: a) All plastids b) Chloroplasts only c) Chromoplasts only d) Leucoplasts only
The semi-permeable cell membrane allows: a) Free passage of all substances b) No passage of any substance c) Selective passage d) Passage of water only
Which organelle is pushed to periphery in plant cells? a) Vacuole b) Chloroplast c) Nucleus d) Cell membrane
The jelly-like matrix of the cell is: a) Nucleoplasm b) Cytoplasm c) Cell sap d) Protoplasm
Tonoplast is the membrane of: a) Nucleus b) Chloroplast c) Vacuole d) Cell
Which statement about plastids is correct? a) Present in all cells b) Present only in plant cells c) Present only in animal cells d) Absent in eukaryotes
The primary component of cell wall is: a) Protein b) Lipid c) Cellulose d) Nucleic acid
Cell membrane is described as: a) Thick and rigid b) Thin and flexible c) Thick and flexible d) Thin and rigid
The central vacuole occupies maximum space in: a) Animal cells b) Plant cells c) Bacterial cells d) Fungal cells
Which is true about eukaryotic cells? a) No nucleus b) Nucleus present c) Multiple nuclei d) Nucleus absent
The control center function is performed by: a) Cell membrane b) Cytoplasm c) Nucleus d) Vacuole
Metabolic reactions occur in: a) Nucleus only b) Cell membrane only c) Cytoplasm only d) Throughout the cell
Which organelle stores water and nutrients? a) Nucleus b) Cell membrane c) Vacuole d) Cell wall
The lipid bilayer structure is found in: a) Cell wall b) Cell membrane c) Nucleus d) Vacuole
Photosynthesis converts: a) Chemical to light energy b) Light to chemical energy c) Heat to chemical energy d) Mechanical to light energy
The boundary that controls cellular transport is: a) Cell wall b) Nuclear envelope c) Cell membrane d) Tonoplast
Which provides shape to plant cells? a) Cytoplasm b) Cell membrane c) Cell wall d) Nucleus
The absence of cell wall in animal cells makes them: a) Rigid b) Flexible c) Stronger d) Larger
Genetic material is protected by: a) Cell membrane b) Cell wall c) Nuclear envelope d) Cytoplasm
The medium for organelle movement is: a) Cell wall b) Nucleus c) Cytoplasm d) Vacuole
Which organelle is involved in pigment storage? a) Chloroplasts b) Chromoplasts c) Leucoplasts d) All plastids
The basic difference between prokaryotic and eukaryotic cells is: a) Size b) Shape c) Presence of nucleus d) Number of organelles
Instructions: Answer the following questions briefly in one or two sentences. Total Questions: 100 Total Marks: 100
Instructions: Answer the following questions in 2-3 sentences with proper explanation. Total Questions: 25 Total Marks: 50
Instructions: Answer the following questions in 4-5 sentences with detailed explanation and examples where applicable. Total Questions: 25 Total Marks: 75
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