Which of the following is correct about the slime mould? I. Its thalloid body, plasmodium, has pseudopodia for locomotion and engulfing organic matter II. During unfavourable conditions plasmodium differentiates and produces fruiting bodies, sporangia III. Spores possess true cell wall IV. They are dispersed by air current V. Being extremely resistant, spores survive for many years VI. Plasmodium can grow up to several feet