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Absolute zero (−273.15°C) is the coldest possible temperature — at which atoms nearly stop moving.
Did you know?
Absolute zero (−273.15°C) is the coldest possible temperature — at which atoms nearly stop moving.
To solve this problem, we need to identify which organism has flagellated male gametes.Let's analyze each option:• Option 1: Polysiphonia - This is a red alga, and its male gametes (spermatia) are non-motile.• Option 2: Anabaena - This is a cyanobacterium, and it reproduces asexually. It does not have flagellated gametes.• Option 3: Ectocarpus - This is a brown alga, and its male gametes are flagellated.• Option 4: Spirogyra - This is a green alga, and it reproduces through conjugation, not using flagellated gametes.Therefore, the correct answer is Option 3: Ectocarpus, as it has flagellated male gametes.
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