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Which type of organism thrives on decaying organic substances and contributes to their breakdown?

1. Heterosis describes the occurrence where offspring from diverse varieties or species show improved growth, development rate, and fertility compared to their parents.
2. Saprophytes are organisms that feed on decomposing organic materials and assist in their breakdown.
3. Parasites are organisms that rely on living plants or animals for sustenance, often residing on or within their hosts.
4. None of the above.

Correct answer: Saprophytes are organisms that feed on decomposing organic materials and assist in their breakdown.

Solution

Saprophytes obtain nutrients from dead, decaying organic material, so they directly help break it down. That makes them the organisms described in the question.

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