"protist reproduction" is always asexual fission. is always sexual with the adult haploid. is always sexual with the adult diploid. is always sexual with alternation of haploid and diploid generations. may be asexual or any of these sexual cycles.

May be asexual or any of these sexual cycles

Explanation:

Most of the protist living things reproduce by asexual processes like binary fission (when a living thing split in two including organelles and DNA like amoebas), multiple fission (where the nucleus of a cell split several times, having several new nucleus for the new living things like the algae or sporozoas),  and budding (when a new baby nucleus born next to the mother cell until it has is own structure).

When they have the sexual reproduction can be either by conjugation (when two gametes join to form a new complete structure like in molds an green algae) or alternation of generations (in which the sexual reproduction system is present in one generation and then in the next one is asexual reproduction).

the abdomen (less formally called the belly, stomach, tummy or midriff) constitutes the part of the body between the thorax (chest) and pelvis, in humans and in other vertebrates. the region occupied by the abdomen is termed the abdominal cavity. the stomach secretes acid and enzymes that digest food. ridges of muscle tissue called rugae line the stomach. the stomach muscles contract periodically, churning food to enhance digestion. the pyloric sphincter is a muscular valve that opens to allow food to pass from the stomach to the small intestine.

one is through turgidity. this occurs before ground tissue ( collenchyma

and sclerenchyma cells) become well

developed to give structural support to the plant as it grows bigger. the xylem

tissue (composed of rigid tissue) of the young

plant render this support and also maintaining osmotic turgidity of the surrounding

plant cells.