Q1 of 51 Page 31

While eating peach or pear it is usually seen that some stone like structures get entangled in the teeth, what are these stone like structures called?

The stone like structures present in peach or pear are stone cells also known as Sclerieds.

Schlerieds are type of Sclerenchyma which provides mechanical support to organs.


The sclereids are spherical, oval or cylindrical, highly thickened dead cells with very narrow cavities (lumen).


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12

The cross-section of a plant material showed the following features when viewed under the microscope.

a. The vascular bundles were radially arranged.


b. Four xylem strands with exarch condition of protoxylem.


To which organ should it be assigned?


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What do hard wood and soft wood stand for?

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What is the commercial source of cork? How is it formed in the plant?

 3

Below is a list of plant fibres. From which part of the plant these are obtained a. Coir b. Hemp c. Cotton d. Jute