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Question -

Differentiate between the following:-

(i) red algae and brown algae

(ii) liverworts and moss

(iii) homosporous and heterosporous pteridophyte

(iv) syngamy and triple fusion



Answer -

Following are the differences:

i)

1. Red algae contain chlorophyll a and chlorophyll d but brown algae contain chlorophyll a and c.

2. In red algae, Phycobilins are present but brown algae do not have phycobilins.

3. If red algae reserve food in the form of floridian starch, it is laminarin in brown algae.

4. Red algae are not flagellated, and brown algae are flagellated.

ii)

1. There is no protonema phase in the liverworts and the life cycle in the moss begins with the protonema

2. If the plant body is dorsoventral in liverworts, the algal plant body is separated into a stem-axis.

iii) Homosporous possesses only one type of spores whereas heterosporous will have morphologically different spores in different sporangia.

iv) Syngamy is the fusion of the male gamete with the ovum whereas triple fusion is the fusion of another male gamete with two polar nuclei.

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