A food web shows many organisms eating more than one type of food.
A food web shows the transfer of energy from producer through to tertiary consumer.
A food web refers to an ecosystem, a food chain refers only to a particular habitat.
Answer:
C
Explanation:
Answer:
Euglena have diversed nutritional requirements. They are autotrophic when kept in light and heterotrophic when deprived of light.
The Euglena contains chloroplast in it to perform photosynthesis in the presence of light.
When the Euglena is kept in the dark it starts deriving energy from the organic matter around it and shows heterotrophic mode of nutrition.
When light will be provided to Euglena it will start resynthesizes its photosynthetic pigment and it will start perform photosynthesis.
Re-exposure of Euglena to light after chloroplast destruction will not restore photosynthesis; instead, Euglena will continue to survive as a heterotroph until it possibly re-acquires chloroplasts through secondary endosymbiosis or other means.
When Euglena, a microbial eukaryote, is deprived of light and its chloroplasts are destroyed, reintroducing it to light will not prompt the immediate restoration of photosynthesis. Having lost their chloroplasts, they cannot simply regrow them upon exposure to light. Instead, Euglena will rely on its ability to behave as a heterotroph, acquiring nutrients and energy by ingesting or absorbing organic matter from its environment. Euglena is known as a mixotroph, which means it can switch between autotrophic (photosynthesizing) and heterotrophic lifestyles, depending on the available resources. Euglena stores energy in a glucose polymer different from typical starch, and this storage, along with other nutrients absorbed from the environment, can support them when photosynthetic capability is compromised.
Every day they charted whether upstairs and downstairs were either too cold, cold, warm, too warm, or hot. They tallied their results, learning that the two weeks of using both units; the house was a bit too warm. The month where only the downstairs unit was used, they noted downstairs and upstairs were warm. This did not support their prediction that it would be cold.
They began to wonder how upstairs could still be warm during the daytime when only using the downstairs unit. What is the best possible explanation for upstairs being warm throughout the winter month when they only turned on the downstairs unit?
Answer:
Convection
Explanation:
Hot air rises as it has less particles and more volume. This means that when they heat downstairs, the hot air rises to the top. Then, it cools and sinks because cold air has more particles and less volume. It heats up again from the downstairs unit and the cycle keeps going. This is called convection
Answer:
The volume of warm air expands and rises, warming the whole house through convection.
Explanation:
The statement " Less than 0.1% of the energy in a food chain generally makes it from the sun to quaternary consumers" is definitely true.
A Food chain may be defined as the systematic transfer of energy from producers to consumers through a series of organisms.
Producers produce 100% of the energy. But according to the 10% law by Lindeman, only 10% of the energy gets transferred to the above trophic level. By this primary consumers receive only 10%, secondary consumers receive 1%, tertiary consumers receive 0.1%, and quaternary consumers receive 0.01%.
Therefore, the statement " Less than 0.1% of the energy in a food chain generally makes it from the sun to quaternary consumers" is definitely true.
To learn more about Food chain, refer to the link;
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ribosomes
cytoplasm
cell membrane