Certains species of sea slugs feed on algae. When these animals eat algae, they penetrate the cell wall of the the algal cells,
digest the cellular content, and incorporate the algal chloroplasts into the intestinal cells of their digestive tracts. This process is
called kleptoplasty
Researchers examined the role of kleptoplasty in the sea slug Elysia viridis. The researchers compared the growth of adult E
viridis maintained under three conditions for 25 days:
• Control sea slugs kept in lighted aquariums with access to algae
• Light-starved: sea slugs kept in lighted aquariums with no access to algae
• Dark-starved sea slugs kept in dark aquariums with no access to algae
The table below shows the results of this experiment.
Day
Condition
2 24
Control 18 27
Weight (mg) Light-starved 18 12
Dark-starved 18 4
Control 13 15
Length (mm) Light-starved 14 15
Dark-starved 13 7
artakana el 2017 Scientific Reports Licensed under CC BY 4.0.
Dala courtesy
Which conclusion regarding photosynthesis in E viridis is supported by the data?
OA.
E. viridis consume more CO2 to produce sugars when in the dark than when in the light.
OB. E. viridis consume more O2 for photosynthetic reactions when in the light than when in the dark.
OC. The chloroplasts incorporated into E. viridis intestinal cells need algae to produce chemical energy
OD. The body of E. viridis is partially translucent to allow light energy to reach intestinal cells

Question

06-01-2022
Biology

Answered

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Certains species of sea slugs feed on algae. When these animals eat algae, they penetrate the cell wall of the the algal cells,
digest the cellular content, and incorporate the algal chloroplasts into the intestinal cells of their digestive tracts. This process is
called kleptoplasty
Researchers examined the role of kleptoplasty in the sea slug Elysia viridis. The researchers compared the growth of adult E
viridis maintained under three conditions for 25 days:
• Control sea slugs kept in lighted aquariums with access to algae
• Light-starved: sea slugs kept in lighted aquariums with no access to algae
• Dark-starved sea slugs kept in dark aquariums with no access to algae
The table below shows the results of this experiment.
Day
Condition
2 24
Control 18 27
Weight (mg) Light-starved 18 12
Dark-starved 18 4
Control 13 15
Length (mm) Light-starved 14 15
Dark-starved 13 7
artakana el 2017 Scientific Reports Licensed under CC BY 4.0.
Dala courtesy
Which conclusion regarding photosynthesis in E viridis is supported by the data?
OA.
E. viridis consume more CO2 to produce sugars when in the dark than when in the light.
OB. E. viridis consume more O2 for photosynthetic reactions when in the light than when in the dark.
OC. The chloroplasts incorporated into E. viridis intestinal cells need algae to produce chemical energy
OD. The body of E. viridis is partially translucent to allow light energy to reach intestinal cells

Sagot :

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Аноним Аноним · Answer 1 · 2022-01-06T08:19:27-05:00

Аноним Аноним

06-01-2022

○ A) E. viridis consume more CO2 to produce sugars when in the dark than when in the light.

Answer Link

darla1322 darla1322 · Answer 2 · 2022-01-18T15:04:08-05:00

Answer:

The body of E. viridis is partially translucent to allow light energy to reach intestinal cells.

Explanation:

According to the table, control E. viridis gained mass and maintained their length over the study period. Both light-starved and dark-starved E. viridis lost weight over the study, but the light-starved E. viridis lost less weight than the dark-starved E. viridis. Light-starved E. viridis also grew longer, while dark-starved E. viridis grew shorter. These findings suggest that in the presence of light, E. viridis can produce some of the materials they need to survive through photosynthesis in the chloroplasts.

Photosynthesis requires an input of energy from light. So, it is likely that the body of E. viridis is partially translucent to allow light energy to reach intestinal cells.

Sagot :

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