Class Reptilia Flashcards

Questions and Answers

What does the class Reptilia include?

Amphibians

Mammals

Turtles, tortoises, alligators, crocodiles, lizards, snakes (correct)

Birds

The class has dry _ ______ covering the skin.

horny scales

The limbs of amphibians are pentadactyl except in _________.

snakes

The young of reptiles resemble parents and undergo metamorphosis.

False Signup and view all the answers

What were the most ancient reptiles?

cotylosaurs Signup and view all the answers

What were the earliest reptiles that led to mammals?

pelycosaurs Signup and view all the answers

Class Reptilia, order Chelonia includes which basic organisms?

tortoise and turtle Signup and view all the answers

Terrestrial forms of the order Chelonia are called _________.

tortoises Signup and view all the answers

Semi-aquatic forms of the order Chelonia are called __________.

turtles Signup and view all the answers

What is the name of the freshwater species of Chelonia that is edible?

terrapin Signup and view all the answers

Class Reptilia, order Chelonia has a shell that completely ________ the body.

encases Signup and view all the answers

What is the dorsal shell of a reptile from the order Chelonia called?

carapace Signup and view all the answers

What is the ventral shell of a reptile from the order Chelonia called?

plastron Signup and view all the answers

Which lizard squirts blood from its eyes as a deterrent?

regal horned lizard Signup and view all the answers

This reptile has an elongated tongue that it uses to pick up smells.

gila monster Signup and view all the answers

Lizards and snakes are representative of which class and order?

class Reptilia, order Squamata Signup and view all the answers

Lizards and snakes came from the same ancestral stock as this animal: ______________.

sphenodon Signup and view all the answers

What is another name for the suborder Suria?

lacertilla Signup and view all the answers

Class Reptilia, order Squamata, suborder Suri's largest species is known as the __ _.

komodo dragon Signup and view all the answers

Class Reptilia, order Squamata, suborder Suri have 2 pairs of _______ limbs.

pentadactyl Signup and view all the answers

Class Reptilia, order Squamata, suborder Suria have the ability of certain lizards to change colors rapidly to blend into the background is called __________.

metachrosis Signup and view all the answers

____ are pigment-containing and light-reflecting cells.

chromatophores Signup and view all the answers

How many bacteria exist in the Komodo dragon saliva?

50 Signup and view all the answers

How many types of bacteria are known to be deadly in the Komodo dragon's saliva?

4 Signup and view all the answers

______ mph is the top running speed of the Komodo dragon.

12 Signup and view all the answers

Class Reptilia suborder: Serpentes is also known as this name.

ophidia Signup and view all the answers

Suborder Serpente (Ophidia) do not have limbs but the _ and _ retain skeletal vestiges.

pythons, boas Signup and view all the answers

Suborder Serpente of the class Reptilia do not have limbs but retain vestiges of the _______ girdles.

pelvic Signup and view all the answers

Locomotion of the suborder Serpentes is _ muscular undulations and also movement of the __ scales.

sideward, transverse Signup and view all the answers

Suborder Serpentes do not have external ear pits, and .

tympanic membranes Signup and view all the answers

_ _ attach the __ bones to each other and to the cranium to allow a snake to open its mouth.

loose ligaments, jaw Signup and view all the answers

What two groups of poisonous snakes exist?

vipers, cobras Signup and view all the answers

Presence of pit-like depression between the eye and the nostril is known as a ___________.

pit viper Signup and view all the answers

The pit of a pit viper is located between the _ and the __.

eyes, nostrils Signup and view all the answers

Examples of pit vipers include?

rattlesnake, copperhead Signup and view all the answers

What type of venom attacks the nervous system and can cause paralysis?

neurotoxic Signup and view all the answers

What type of venom damages tissue causing necrosis?

cytotoxic Signup and view all the answers

What type of venom damages blood vessels?

hemotoxic Signup and view all the answers

Study Notes

Class Reptilia Overview

Encompasses turtles, tortoises, alligators, crocodiles, lizards, snakes, and tuataras.
Notable for having dry horny scales that protect their skin.

Reptile Characteristics

Limbs of amphibians are typically pentadactyl, except in snakes.
Young reptiles closely resemble adult forms without undergoing metamorphosis.

Early Reptiles

Cotylosaurs are recognized as some of the most ancient reptiles.
Pelycosaurs are the earliest reptiles that eventually led to mammals, indicated by skull evolution.

Order Chelonia

Includes tortoises and turtles, classified under the order Chelonia.
Terrestrial forms are known as tortoises, while semi-aquatic versions are called turtles.
Terrapins refer to edible freshwater species within this order.
Members of Chelonia are encased in a shell that completely surrounds their bodies.

Shell Anatomy

The dorsal shell is referred to as the carapace.
The ventral shell is known as the plastron.

Unique Reptile Features

Regal horned lizard can squirt blood from its eyes as a defense mechanism.
Gila monster has an affording tongue for picking up scents.
Lizards and snakes are representative of the class Reptilia and order Squamata.

Ancestral Lineage

Sphenodon is a relative from which lizards and snakes descended.
Lacertilla is an alternate name for the suborder Sauria within the order Squamata.
Komodo dragon is the largest species in the suborder Sauria.

Limb Structures and Movement

Squamata features two pairs of pentadactyl limbs.
Certain lizards have the ability to change color rapidly through metachrosis, utilizing chromatophores, which are pigment-containing and light-reflecting cells.

Komodo Dragon Facts

Saliva contains 50 types of bacteria, with four of these known to be fatal, causing sepsis in prey.
Can run at a top speed of 12 mph.

Suborder Serpentes (Ophidia)

Characterized by the absence of limbs, although pythons and boas retain vestigial skeletal structures.
Retain vestiges of girdles, using sideward muscular undulations for locomotion alongside transverse scale movement.
Lacks external ear pits and tympanic membranes.

Snake Structure

Loose ligaments connect jaw bones, allowing for wide mouth opening.
Groups of poisonous snakes include vipers and cobras.

Pit Vipers

Defined by a unique pit-like depression located between the eye and nostril.
Examples include rattlesnakes and copperheads.

Venom Types

Neurotoxic venom attacks the nervous system, potentially causing paralysis and suffocation.
Cytotoxic venom damages tissue causing necrosis, leading to death via blood loss.
Hemotoxic venom damages blood vessels, leading to serious health risks.

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Description

Test your knowledge of Class Reptilia with these flashcards! This quiz covers key terms and definitions related to reptiles such as turtles, snakes, and their unique features. Perfect for students studying zoology or anyone interested in herpetology.