Which of the following organisms is not ultimately dependent on the su...
The Sun as a Source of Energy
The sun is the ultimate source of energy for most living organisms on Earth. It provides light and warmth, and through the process of photosynthesis, it allows plants and some other organisms to convert sunlight into chemical energy in the form of glucose. This energy is then passed on to other organisms in the food chain.
Organisms Dependent on the Sun
Most organisms, directly or indirectly, rely on the sun for their energy needs. Here are some examples:
1. Plants: Plants are the primary producers in the food chain. Through photosynthesis, they convert sunlight, water, and carbon dioxide into glucose, which is used to fuel their growth and reproduction.
2. Herbivores: Herbivores, such as rabbits and deer, eat plants to obtain the energy stored in the plant's tissues. They are dependent on the sun indirectly because they rely on plants for their food.
3. Carnivores: Carnivores, like lions and wolves, feed on herbivores or other carnivores. They obtain their energy by consuming the tissues of other organisms that are themselves dependent on the sun.
4. Omnivores: Omnivores, such as humans and bears, have a varied diet that includes both plants and animals. They obtain their energy from both plant and animal sources, which ultimately rely on the sun.
Organism Not Dependent on the Sun
The only option among the given choices that is not ultimately dependent on the sun as a source of energy is option 'c) A cave fish feeds on debris that washes down to it.'
- Cave Fish: Cave fish inhabit dark, underground caves where sunlight does not reach. They have adapted to their environment and do not require sunlight for their energy needs. Instead, they rely on other sources of food, such as debris and organic matter that washes into the cave through underground water systems. These organisms have evolved to survive in extreme conditions where sunlight is absent, and they have found alternative sources of energy to sustain themselves.
Conclusion
In conclusion, while most organisms are ultimately dependent on the sun as a source of energy, there are a few exceptions, such as cave-dwelling organisms like the cave fish mentioned in option 'c.' These organisms have adapted to survive in environments where sunlight is scarce or absent and have found alternative sources of energy to sustain themselves.
Which of the following organisms is not ultimately dependent on the su...
Option 'D' is the correct answer.
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