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Male (♂) refers to the Genderof an organism, or part of an organism, which produces small mobile Gamete, called Spermatozoon. Each spermatozoon can fuse with a larger Femalegamete or Ovum, in the process of Fertilization. A male cannot reproduce Sexual_reproductionwithout access to at least one ovum from a female, but some organisms can reproduce both sexually and asexually.

Not all species share a common Sex-determination_system. In most animals, sex is determined Genetics, but in some species it can be determined due to social, environmental or other factors. The sex of humans is determined genetically.

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13y ago
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16y ago

The thin membranes are surrounded by blood vessels, enabling easy gas exchange.

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13y ago

Thin cell wall (1 cell thick) which means a easy diffusion path, moist cell wall lining, partially permeable membrane.

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6y ago

Because the alveolous has a thin membrane

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Q: Why is it easy for gases to pass across the wall of an alveolus?
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