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Maesilea crenata

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 Marsilea crenata is a species of fern found in Southeast Asia. It is an aquatic plant looking like a four leaf clover. Leaves floating in deep water or erect in shallow water or on land. Leaflets glaucous, sporocarp ellipsoid, on stalks attached to base of petioles.
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Euglenoids

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 Euglenoids

Majority of them are fresh water organisms found in

stagnant water. Instead of a cell wall, they have a protein

rich layer called pellicle which makes their body flexible.

They have two flagella, a short and a long one. Though

they are photosynthetic in the presence of sunlight, when

deprived of sunlight they behave like heterotrophs by

predating on other smaller organisms. Interestingly, the

pigments of euglenoids are identical to those present in

higher plants. Example: Euglena (Figure 2.4b).

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