GENERAL HISTOLOGY

Detailed explanation-1: -The world’s longest animal is a type of nemertean, or ribbon worm, known as Lineus longissimus – one specimen was measured as 55 metres. This record is contested though, as Lineus only reaches extreme lengths when fully stretched out – the animals are remarkably elastic.

Detailed explanation-2: -The longest flatworm ever found, a tapeworm, was more than 90 feet long.

Detailed explanation-3: -The bootlace worm (Lineus longissimus) is a species of ribbon worm and one of the longest known animals, with specimens up to 55 m (180 ft) long being reported, although this has not been confirmed.

Detailed explanation-4: -Lineus longissimus, the bootlace worm, is known as the longest animal on earth with a body length of up to 50 m (Fig. 1). This species belongs to the anoplan nemerteans, carrying a proboscis without a stylet.

Detailed explanation-5: -The bootlace worm (Lineus longissimus) is in the phylum Nemertea or ribbon worms. It is one of the longest animals known, with specimens up to 30 metres (98 ft) long being reported. They may grow as long as 60 metres (200 ft), which would make it the longest animal in the world.