Question: 107: The type of tissue commonly found in the fruit wall of nuts is :
(1) Parenchyma
(2) Collenchyma
(3) Sclerenchyma
(4) Sclereid
Answer: Option (4)
Explanation:
The fruit wall of nuts is hard and woody in nature, providing protection to the seed inside.
This hardness is due to the presence of specialised thick-walled cells.
Sclereids are a type of sclerenchyma cell characterised by very thick, lignified cell walls.
They are also known as stone cells and are commonly found in hard seed coats and the fruit wall of nuts.
Parenchyma consists of thin-walled living cells and does not provide mechanical hardness.
Collenchyma provides flexibility and support to growing parts of plants but is not hard.
Sclerenchyma is a general category, while sclereids specifically form the hard tissue in nuts.
Therefore, the tissue commonly found in the fruit wall of nuts is sclereid.
Hence, the correct answer is Option (4).