Points to Remember

Structural Organisation of Animals (Science)

Points to Remember

·                 Leech is metamerically segmented and has 33 segments.

·                 It has two suckers which are used to attach to the body of the host. It is also involved in locomotion.

·                 The salivary glands of leech produce an anticoagulating substance called hirudin.

·                 Leech is a hermaphrodite.

·                 Rabbits are warm blooded vertebrates.

·                 Canine teeth are absent in rabbit.

·                 Respiration takes place through a pair of lungs in rabbit.

·                 The heart is four chambered consisting of two auricles and two ventricles.

·                 Urinogenital system comprises the urinary (or) excretory system and the genital (or) reproductive system.

·                 Mammary glands are modified glands of the skin and help in nourishing the young ones.