Anatomy of Flowering Plants — Important Questions
ICSE · Class 11 · Biology
60 important questions from Anatomy of Flowering Plants for ICSE Class 11 Biology, with answers. Includes mcq and true false questions.
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Important Questions from Anatomy of Flowering Plants
Which of the following is NOT a characteristic of meristematic cells?
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Large central vacuole
Meristematic cells lack a large central vacuole. A large vacuole would push the nucleus to the periphery, making cell division inefficient. They have dense cytoplasm, large prominent nuclei, and thin cellulosic walls.
Which meristem is responsible for increase in the length of the plant?
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Apical meristem
Apical meristem is located at the tips of roots and shoots and is responsible for increase in length (primary growth). Lateral meristem (vascular cambium + cork cambium) is responsible for increase in girth (secondary growth).
Collenchyma cells are living and provide support because their walls are thickened with:
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Cellulose and pectin at corners
Collenchyma walls are unevenly thickened with cellulose, hemicellulose, and pectin at the corners. Lignin is ABSENT from collenchyma — this keeps the cells living and flexible. Lignin is the hallmark of sclerenchyma.
Stone cells (sclereids) give a gritty texture to the pulp of which fruit?
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Pear
Sclereids (stone cells) are present in the pulp of pear fruit, giving it its characteristic gritty texture. They are isodiametric sclerenchymatous cells with thick, highly lignified walls.
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