Question

Haversian systems are found in the bones of
(1) Scoliodon
(2) Scolidon, Pigeon
(3) Rabbit, Panther
(4) Scoliodon, Pigeon, Panther, Python​

Answer 1

Explanation:

Haversian system is a microscopic tube in the 'outermost region' of bone called cortical bones that have 'blood vessels' and 'nerves'. Each Haversian system generally contains one or two 'Capillaries' and 'nerve fibers'.

Answer 2

Answer:

Panther, Rabbit

It is absent in spongy bone of mammals. 

Explanation:

Each Haversian system has a cylindrical structure, which is surrounded by Haversian lamellae .

It is a basic unit of compact bone.

Haversian system or osteon is a characteristic feature of mammalian bone.