Which of the following statements about Euglana is correct?...

Name: Problem 34, Chapter 2: Objective NCERT at your FINGERTIPS: Biology
Uploaded: 2021-10-24T17:28:03-08:00
Duration: 1 min 45 s
Channel: Aflah M
Description: Which of the following statements about Euglana is correct? (a) Euglena is a flagellate organism. (b) Euglena when placed in continuous darkness, loses its photosynthetic activity and dies. (c) The pigments of Euglena are quite different from those of green plants. (d) Euglena is a marine protist. -

Which of the following statements about Euglana is correct? (a) Euglena is a flagellate organism. (b) Euglena when placed in continuous darkness, loses its photosynthetic activity and dies. (c) The pigments of Euglena are quite different from those of green plants. (d) Euglena is a marine protist. -

Which of the following statements about Euglana is correct?
(a) Euglena is a flagellate organism.
(b) Euglena when placed in continuous darkness, loses its photosynthetic activity and dies.
(c) The pigments of Euglena are quite different from those of green plants.
(d) Euglena is a marine protist. -

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Key Concepts

Photosynthetic Pigments

Photosynthetic pigments are molecules that absorb light to drive the process of photosynthesis. Although the pigments in many protists, including Euglena, are similar to those found in green plants, they can have unique accessory pigments that facilitate efficient light capture and utilization under different environmental conditions.

Habitat Differentiation in Protists

Protists inhabit a wide range of environments, but many euglenoids, such as Euglena, are predominantly found in freshwater habitats. Understanding the typical habitat is crucial, as it explains the ecological distribution and environmental adaptations that differentiate freshwater protists from those that are marine.

Flagellate Organisms

Flagellates are organisms that move using one or more whip-like structures called flagella. This characteristic is fundamental to many protists, as it enables mobility and aids in processes such as feeding and environmental navigation.

Mixotrophy and Photosynthesis

Mixotrophy refers to the ability of some organisms to utilize both photosynthesis and heterotrophy for nutrition. In protists like Euglena, the presence of chloroplasts permits photosynthesis when light is available, while they can also absorb nutrients from their surroundings in the absence of light, thereby ensuring survival under varied conditions.

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