Schrödinger postulated [1] that living organisms consume negative entropy to beat thermal death. The strongest depot of the negative entropy for green plants should be the Sun.

The entropy is somewhat mysterious function. It is defined as a ratio which measures the amount of energy needed to heat a closed system to some temperature, divided by the final temperature. This function has singularities. For example, the temperature of a crystal remains suddenly constant, despite heating and the crystal melts into a liquid. The temperature of a liquid stops to increase and the liquid boils and changes into a gas.

At systems having very high entropies, new mechanisms appear. Gases at high temperatures ionize, collisions and or photons split off electrons and radicals, and at last molecules transforms into elementary particles. Now we know, that at extremely high temperatures (energies) even elementary particles are not stable and quarks appear. At nonliving matter new particles are different from the parent ones.

It is not possible to determine entropy of living organisms experimentally, since their cooling would lead to their death (maybe except some germs). Newertheless, we can study a system containing a green algae cell with water, carbon dioxide and other its nourishing substances in a transparent container. It absorbs light energy. Therefore the entropy of the system must increase, even if the temperature of the system does not increase. The chloryphyle transforms carbon dioxide into oxygen molecules and organic compounds. The entropy of these compounds and oxygen molecules is greater than before photoreaction. At least if produced compounds remained outside the cell, as in the case of the photoreaction reaction in vitro. The compounds can burn and at this the energy is transformed into heat.

If the algae metabolizes the photoreaction products, it is bigger, its weight more than at the beginning of the reaction. Since the oxygen alone has itself lower entropy, the increase of entropy must be absorbed by the cell. The growing of its specific entropy is lesser but it grows, too.

The rising entropy could lead to the thermal death. It is necessary to find a mechanism, how the cell can decrease its dangereously high entropy. We have seen that unliving particles did it by splitting. Similar mechanism is used by living cells. With a great improvement, which can be used for characterization of life.

A living organism reproduces. Either a cell splits into two identical cells and or an organism produces a germ at higher organisms.

If the cell had at the beginning entropy 1 and its value increased on 1.99 during photosynthesis, two cells have entropy 2x1 = 2 after dividing, to show that even at this process, going in the system spontaneously, the entropy must be growing.

This explanation is simple and needs none specific properties of living organisms which were not really observed. The diploid chromosomes splits into diploid pairs and each new cell gets its own set. Such events are unknown at molecules, because there unequal parts emerge. The reproduction is a necessary condition for life.

The futher evolution improved this process. An haploid egg gets the second set from a semen or a pollen.

Occam´s razor is against the negative entropy as a new and unnecessary concept.

Since the living organisms have higher entropy than anorganic matter, it must be abandonned even the concept of information entropy as something fighting against entropy.

I have shown many times, that Boltzmann and Shannon entropies are at specific condition additive functions.