Anatomy of Flowering Plants
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Questions and Answers

What is responsible for the growth of plants?

  • Thin cell walls
  • Specialised cells
  • Meristematic cells (correct)
  • Dense cytoplasm

    • What is the main feature of meristematic cells?

  • Intercellular space
  • Thick cell walls
  • Large nucleus (correct)
  • Dense peripheral region

    • What is the role of promeristems in plant growth?

  • Responsible for the formation of roots
  • Responsible for growth in the next stage
  • Responsible for the formation of leaves
  • Responsible for embryonic growth (correct)

    • What type of meristematic tissue is responsible for the growth in the next stage of a plant?

    <p>Primary meristem</p> Signup and view all the answers

    What is the location of root apical meristem?

    <p>Tip of the root</p> Signup and view all the answers

    What is the characteristic of intercellular space in meristematic cells?

    <p>It is absent</p> Signup and view all the answers

    What is the primary function of apical meristem?

    <p>To give rise to primary tissues</p> Signup and view all the answers

    Where are intercalary meristems typically found?

    <p>Between mature tissues at the nodes of the stem</p> Signup and view all the answers

    What type of meristem is responsible for the growth of roots?

    <p>Root apical system</p> Signup and view all the answers

    What is the function of secondary meristems?

    <p>To increase the girth of the tree stems</p> Signup and view all the answers

    Where are lateral meristems typically found?

    <p>In mature regions of roots and stems</p> Signup and view all the answers

    What is the characteristic of permanent tissue?

    <p>Cells are mostly non-dividing</p> Signup and view all the answers

    What is the main function of Collenchyma tissue?

    <p>Provides mechanical support and elasticity</p> Signup and view all the answers

    What is the composition of the cell wall of Collenchyma cells?

    <p>Cellulose, Hemicellulose, and Pectin</p> Signup and view all the answers

    What is the characteristic of Sclerenchyma cells?

    <p>Cells have thick and lignified cell walls with many pits</p> Signup and view all the answers

    What is the function of Sclerenchyma tissue?

    <p>Provides mechanical support to organs</p> Signup and view all the answers

    What is the composition of the cell wall of Sclerenchyma cells?

    <p>Cellulose, Hemicellulose, and Lignin</p> Signup and view all the answers

    What is the characteristic of Sclereids?

    <p>They have highly thickened cell walls</p> Signup and view all the answers

    What is the primary function of xylem in plants?

    <p>To transport water unidirectionally</p> Signup and view all the answers

    What type of cells are tracheids?

    <p>Elongated, tube-like dead cells</p> Signup and view all the answers

    What is the function of phloem fibres?

    <p>To provide strength to phloem cells</p> Signup and view all the answers

    During which stage of growth does secondary xylem develop?

    <p>During secondary growth</p> Signup and view all the answers

    What is the function of companion cells in phloem?

    <p>To assist sieve tubes in food transport</p> Signup and view all the answers

    What is the characteristic of protoxylem?

    <p>It is the first formed xylem consisting of small cells</p> Signup and view all the answers

    What is the function of bulliform cells in monocot leaves?

    <p>They help in rolling and unrolling of leaves due to change in turgidity</p> Signup and view all the answers

    Which type of cells are present in the hypodermis of monocot stem?

    <p>Sclerenchyma cells</p> Signup and view all the answers

    What is the characteristic of mesophyll in monocot leaves?

    <p>It is not differentiated into palisade and spongy parenchyma</p> Signup and view all the answers

    What is the arrangement of vascular bundles in monocot stem?

    <p>They are scattered in ground tissue</p> Signup and view all the answers

    What is the location of xylem in monocot leaf vascular bundles?

    <p>Upper side</p> Signup and view all the answers

    What is the characteristic of epidermis in monocot stem?

    <p>It is made up of monolayered parenchymatous cells</p> Signup and view all the answers

    What is the primary function of the cuticle in the epidermis of a dicot stem?

    <p>To prevent water loss from epidermal cells</p> Signup and view all the answers

    What is the characteristic of the vascular bundles in a monocot stem?

    <p>They are conjoint and closed</p> Signup and view all the answers

    What is the primary function of the cuticle in epidermal cells?

    <p>To prevent the loss of water</p> Signup and view all the answers

    What type of cells are present in the middle cortex of a dicot stem?

    <p>Parenchymatous cells</p> Signup and view all the answers

    What is the characteristic of guard cells in stomata?

    <p>They possess chloroplasts</p> Signup and view all the answers

    What is the primary characteristic of xylary elements in spring wood?

    <p>They have wider cavities</p> Signup and view all the answers

    What is the function of the hypodermis in a dicot stem?

    <p>To provide mechanical strength</p> Signup and view all the answers

    What is the function of stomatal apparatus in plants?

    <p>To regulate the transpiration and gaseous exchange</p> Signup and view all the answers

    What is the characteristic of phloem fibres mentioned in the text?

    <p>They are commercially useful in jute, flax, and hemp</p> Signup and view all the answers

    What is the main function of heartwood?

    <p>It gives mechanical support and is hard and durable</p> Signup and view all the answers

    What is the characteristic of the phloem in a monocot stem?

    <p>It lacks phloem parenchyma</p> Signup and view all the answers

    What is the primary difference between spring wood and autumn wood?

    <p>The type of nutrients they require</p> Signup and view all the answers

    What is the characteristic of the pith in a monocot stem?

    <p>It is absent</p> Signup and view all the answers

    What is the shape of guard cells in stomata?

    <p>Bean-shaped or dumb-bell shaped</p> Signup and view all the answers

    What is the primary characteristic of sapwood?

    <p>It is present in the peripheral region of the secondary xylem</p> Signup and view all the answers

    What is the function of subsidiary cells in stomata?

    <p>To surround the guard cells</p> Signup and view all the answers

    What is the status of the cambium in autumn wood?

    <p>It is less active</p> Signup and view all the answers

    What is the primary difference between primary and secondary meristems?

    <p>Primary meristems are responsible for increase in height, while secondary meristems are responsible for increase in girth</p> Signup and view all the answers

    Which type of meristem is responsible for the regeneration of parts removed by grazing herbivores?

    <p>Intercalary meristem</p> Signup and view all the answers

    What is the result of secondary meristematic activity?

    <p>Increase in girth of the stem</p> Signup and view all the answers

    What is the characteristic of cells in permanent tissue?

    <p>They are mostly non-dividing cells</p> Signup and view all the answers

    Which type of meristem is responsible for the formation of axillary buds?

    <p>Shoot apical meristem</p> Signup and view all the answers

    What is the location of lateral meristems in plants?

    <p>In mature regions of roots and stems</p> Signup and view all the answers

    What is the characteristic of the cells in the cork cambium?

    <p>They produce secondary tissue that replaces the epidermis in roots and stems</p> Signup and view all the answers

    What is the function of the interfascicular cambium?

    <p>To add girth to the stem by forming secondary xylem and phloem</p> Signup and view all the answers

    What is the characteristic of the cells in the parenchyma tissue?

    <p>They are soft tissue found in softer parts of the leaf and fruits</p> Signup and view all the answers

    What is the function of the intrafascicular cambium?

    <p>To produce xylem and phloem cells</p> Signup and view all the answers

    What is the characteristic of the sclerenchyma cells?

    <p>They are highly lignified and do not conduct water</p> Signup and view all the answers

    What is the function of the apical meristem?

    <p>To initiate primary growth</p> Signup and view all the answers

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