Chapter 26: Reptiles, Order: Squamata Flashcards
1
Q
what organisms belong to this order?
A
- snakes and lizards
2
Q
This order consists of __% of all reptiles. They have __skull which has?
A
- 95
- mobile
- movable joints
L> Kinetic skull
L> can seize and manipulate large prey
3
Q
Most snakes have __ vision. They hear __ frequencies (ex:?) They have keen __ sense.
A
- poor
- low (100-700Hz)
- chemical
- Jacobson’s organs which is sued to sample air, tongue drawn past.
4
Q
What are the two types of venom? Describe them!
A
- Neurotoxic: acts on the NS and affects optic nerve and phrenic nerve of the diaphragm
- Hemorrhagin: breaks down red blood cells and blood vessels
L> Most venom contains a mixture which attacks different organs in different ways. Venom is their hunting weapon not a defensive one.
5
Q
Most snakes are ___ and lay shelled eggs but some are __ and give birth to live young.
A
- oviparous, oviparous
- Viviparous
