SCIENCE
BOTANY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Collenchyma
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Sclerenchyma
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Parenchyma
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Vessel Elements
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Detailed explanation-1: -The grittiness of pear fruit is caused by stone cells which are also known as sclereids. Sclereids are sclerenchyma cells with thick, lignified walls that function in providing structural support and strength to tissues.
Detailed explanation-2: -Have you noticed that pears can sometimes have a gritty texture compared to apples? This comes from stone cells, which develop in pears as they ripen on the tree. Stone cells have very thick cell membranes with very little space inside and are one of the reasons pears do not ripen well on the tree.
Detailed explanation-3: -Sclereids are found in fruit walls of nuts, the pulp of fruits like guava, pear, and sapota, and seed coats of legumes.
Detailed explanation-4: -The cell wall components of pear stone cells contain large amounts of lignin, cellulose, and hemicellulose (xylans), while the parenchyma cells of pear fruits contain abundant pectin (Brahem et al., 2017).
Detailed explanation-5: -So, the correct answer is ‘Sclereids.