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Question

Stellate chloroplast is found in

A
Spirogyra
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B
Coleochaete
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C
Oedogonium
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D
Zygnema
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Solution

The correct option is D Zygnema

In the world of filamentous freshwater algae of division Chlorophyta, the genus Zygnema, with its two stellate (star shaped) chloroplasts per cell, is a standout. Found often alongside Spirogyra, another still-water green algal genus, Zygnema species are classified as conjugate algae of phylum Gamophyta because of their means of sexual reproduction by conjugation. Forming green or yellow-brown mats of macroscopic threads or filaments, Zygnema can reproduce asexually, sexually, or vegetatively. Thus, the correct answer is option D.


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