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Question

The outermost layer epispope splits to form four bands. These bands separate from the spore wall on drying. These bands are called as

A
Jacket
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B
Tapetum
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C
Oosphere
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D
Elators
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Solution

The correct option is D Elators
The lower plants like the liverworts produce the capsule which contains the spore. The spore is surrounded by the spiral thickening which forms the outer layer of the epispope. These spiral thickenings are like bands which are called as the elators. These elators are hygroscopic cells which can absorb moisture and allows the spore to be released. In the absence of moisture, the elators get separated from the outer wall and protects the spore.
Thus, the correct answer is option D.

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