Page 47 - Primary Six Notes

 They have a three clambered heart i.e. two a auricles and

one ventricle

 Their teeth are similar and are for tearing

 Most of them don’t look after their young ones.

vv*
Snakes r to i
v

T/vivJ
*
iTlr
r j
/Ji
Snakes are legless reptiles. * They
move along the ground by flexing their body and can

move very quickly despite not having legs.

Characteristics

 Snakes are carnivores (meat eaters).

 Snakes don’t have eyelids.

 Snakes have flexible jaws which allow them to eat prey big-

ger than their head!

 Snakes have internal ears but not external ones.

 They have no limbs

 Their eyes are without eye lids but each eye is protected by a

immovable transparent membrane

 They have a forked tongue which acts as a sense organ for

smell and taste.

 They have a large number of ribs and vertebrates.

 They shed (moult) their skin after a certain period.

 Some snake have poison fangs which have a deep canal
through which poison passes.