Subjective Type

What are the characteristic features of Euglenoids?

Solution

Some characteristic features of Euglenoids are as follows.
• Euglenoids (such as Euglena) are unicellular protists commonly found in fresh water.
• Instead of the cell wall, a protein-rich cell membrane known as pellicle is present.
• They bear two flagella on the anterior end of the body.
• A small light sensitive eye spot is present.
• They contain photosynthetic pigments such as chlorophyll and can thus prepare their own food. However, in the absence of light, they behave similarly to heterotrophs by capturing other small aquatic organisms.
• They have both plant and animal-like features, which makes them difficult to classify and hence they are called as connecting link between plants and animals.

SIMILAR QUESTIONS

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Which of the following groups of organisms are included under chrysophytes?

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Read the following statements regarding euglenoids and select the incorrect ones. (i) These are mostly freshwater organisms found in stagnant water. (ii) Their body is covered by a protein rich layer called pellicle which makes their body flexible. (iii) They are photosynthetic in the presence of sunlight but become heterotrophs in the absence of sunlight. (iv) They usually possess two flagella, one long and one short. (v) Euglenoids are multicellular ciliate protists.

Biological Classification

The given statements describe a group of organisms. (i) Instead of a cell wall they have a protein rich pellicle making their body flexible. (ii) They have 2 flagella, a short and a long one. (iii) They show mixotrophic nutrition. (iv) They are connecting link between plants and animals. Which of the following groups is referred to here?

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