Question

6.2 euglena, a typical euglenozoan. check your progress 1.1 which type of flagellum, whiplash or tinsel, does euglena possess? 1.2 what color is the photoreceptive eyespot of euglena? 1.3 how might such an eyespot be advantageous for an autotrophic organism? 1.4 in what ways might euglena be considered plant - like? in what ways is it animal - like?

Explanation:

1.1 Euglena has a whiplash - type flagellum which is a long, thin, and smooth structure for locomotion.
1.2 The photoreceptive eyespot of Euglena is red. It contains carotenoid pigments which give it the red color.
1.3 The eyespot is advantageous for an autotrophic organism like Euglena as it can detect light. This helps the organism move towards light sources which are necessary for photosynthesis (since it has chloroplasts and is autotrophic).
1.4 Plant - like features: It has chloroplasts and can perform photosynthesis (autotrophic nutrition). Animal - like features: It has a flagellum for locomotion and can move in search of food when light is not available for photosynthesis, and it lacks a cell wall (unlike typical plants).

Answer:

1.1 Whiplash
1.2 Red
1.3 Detects light for photosynthesis.
1.4 Plant - like: Has chloroplasts for photosynthesis. Animal - like: Has flagellum for movement and lacks cell wall.