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Questions and Answers
What is the role of plastids in meristematic cells?
What is the role of plastids in meristematic cells?
- They are undifferentiated, but present in rudimentary form (proplastids) (correct)
- They are fully differentiated and specialized for photosynthesis
- They have no role in meristematic cells
- They help in water absorption from the soil
What is the function of meristematic cells in plants?
What is the function of meristematic cells in plants?
- They help in water transport within the plant
- They store energy for the plant
- They provide new cells for expansion and differentiation of tissues (correct)
- They provide support to the plant body
What is the main characteristic of meristematic cells?
What is the main characteristic of meristematic cells?
- They have fully developed chloroplasts
- They have large vacuoles and protoplasm
- They are differentiated and cannot divide
- They are totipotent and capable of continued cell division (correct)
Why are meristematic cells packed closely together without intercellular spaces?
Why are meristematic cells packed closely together without intercellular spaces?
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Who first used the term 'meristem' in 1858?
Who first used the term 'meristem' in 1858?
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Study Notes
Meristematic Cells in Plants
- Plastids in meristematic cells are small, undifferentiated, and lack pigments, allowing them to differentiate into various types of plastids later in development.
- Meristematic cells are responsible for plant growth and development, producing new tissues and organs through cell division and differentiation.
- The main characteristic of meristematic cells is their ability to divide and differentiate into various cell types, making them capable of continuous growth and development.
Structure and Organization
- Meristematic cells are packed closely together without intercellular spaces, allowing for efficient cell-to-cell communication and coordination of growth and development.
History of the Term 'Meristem'
- The term 'meristem' was first used by Carl Wilhelm von Nägeli in 1858 to describe the undifferentiated cells responsible for plant growth.
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