Structural Organization in Animals and Plants Quiz - CBSE Class 11 Science

Free practice quiz: Structural Organization in Animals and Plants (CBSE Class 11 Science). 20 multiple-choice questions with answers and explanations. Play online, no sign-up needed.

Sample questions

1. Which tissue type forms the lining of the alveoli in the lungs?

   1. Connective tissue
   2. Muscle tissue
   3. Nervous tissue
   4. Epithelial tissue
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   Answer: D. Epithelial tissue

   Alveoli require a thin, permeable layer for gas exchange. Epithelial tissue provides this.

2. Describe the structural organization of a typical animal cell.

   1. Cell wall, cytoplasm, nucleus
   2. Cell membrane, cytoplasm, nucleus
   3. Cell wall, chloroplast, vacuole
   4. Cell membrane, chloroplast, vacuole
   Show answer

   Answer: B. Cell membrane, cytoplasm, nucleus

   Animal cells lack cell walls and chloroplasts. The basic components are the cell membrane, cytoplasm, and nucleus.

3. Explain the role of the different types of muscle tissue (skeletal, smooth, cardiac) in the body.

   1. Skeletal for movement, smooth for involuntary actions, cardiac for heart
   2. Skeletal for involuntary actions, smooth for heart, cardiac for movement
   3. Skeletal for heart, smooth for movement, cardiac for involuntary actions
   4. All three perform the same function.
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   Answer: A. Skeletal for movement, smooth for involuntary actions, cardiac for heart

   Skeletal muscle is responsible for voluntary movement, smooth muscle for involuntary actions (like digestion), and cardiac muscle for the heart's rhythmic contractions.

4. Discuss the role of different types of plant tissues (epidermis, cortex, vascular bundles, pith) in the overall structure and function of a plant stem.

   1. Each tissue performs unique functions; epidermis protects, cortex for support, vascular bundles for transport, pith for storage
   2. All tissues have similar functions
   3. Only vascular bundles are important for transport
   4. Epidermis provides support, cortex is for transport.
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   Answer: A. Each tissue performs unique functions; epidermis protects, cortex for support, vascular bundles for transport, pith for storage

   The epidermis protects, the cortex provides support and storage, vascular bundles transport water and sugars, and the pith provides storage.

5. Discuss the complex interplay between different tissue types in a plant organ (e.g., leaf) to achieve its overall function. Give specific examples.

   1. Different tissues work together; epidermis protects, mesophyll photosynthesizes, vascular bundles transport
   2. All tissues function independently
   3. Only one tissue type is sufficient for leaf function
   4. Leaf tissues do not interact.
   Show answer

   Answer: A. Different tissues work together; epidermis protects, mesophyll photosynthesizes, vascular bundles transport

   The leaf's function depends on the coordinated actions of various tissues: epidermis for protection, mesophyll for photosynthesis, and vascular bundles for transport.

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