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Questions and Answers
What is the body covering of Class Reptilia?
What is the body covering of Class Reptilia?
- Smooth skin
- Feathers
- Keratinized epidermal scales and bony dermal plates (correct)
- Fur
How do crocodilians differ in terms of parental care compared to other reptiles?
How do crocodilians differ in terms of parental care compared to other reptiles?
- They provide extensive parental care (correct)
- They are ovoviviparous
- They are ectothermic
- They lay eggs with leathery shells
What type of kidneys do reptiles have for water conservation?
What type of kidneys do reptiles have for water conservation?
- Metanephric kidney excreting uric acid (correct)
- Malpighian tubules excreting ammonia
- Nephridia excreting urea
- Glomerular kidney excreting urea
What type of heart do crocodilians possess?
What type of heart do crocodilians possess?
How do reptiles respire?
How do reptiles respire?
What is the typical number of pairs of cranial nerves in the brain of Class Reptilia?
What is the typical number of pairs of cranial nerves in the brain of Class Reptilia?
Which group of reptiles is characterized by a skull with no openings in the temporal area behind the orbit?
Which group of reptiles is characterized by a skull with no openings in the temporal area behind the orbit?
What distinguishes diapsids from synapsids?
What distinguishes diapsids from synapsids?
What is a distinguishing feature of synapsids?
What is a distinguishing feature of synapsids?
Which adaptation is common to all amniotes?
Which adaptation is common to all amniotes?
What is the main function of the amnion in the amniotic egg?
What is the main function of the amnion in the amniotic egg?
Which order of reptiles includes crocodiles, alligators, and birds?
Which order of reptiles includes crocodiles, alligators, and birds?
In reptiles, which adaptation leads to water-conserving nitrogen excretion?
In reptiles, which adaptation leads to water-conserving nitrogen excretion?
$Reptiles$ are classified as tetrapods and amniotes. What does this mean?
$Reptiles$ are classified as tetrapods and amniotes. What does this mean?
Which group includes lizards, snakes, and worm-lizards?
Which group includes lizards, snakes, and worm-lizards?
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Study Notes
Body Covering and Characteristics
- Class Reptilia has dry, scaly skin as its body covering.
Parental Care
- Crocodilians exhibit a high level of parental care, unlike other reptiles, which is characterized by guarding their eggs and young.
Kidneys and Water Conservation
- Reptiles possess metanephric kidneys, which are adapted for water conservation.
Heart Structure
- Crocodilians have a four-chambered heart.
Respiration
- Reptiles respire using lungs.
Cranial Nerves
- The typical number of pairs of cranial nerves in the brain of Class Reptilia is 12.
Skull Characteristics
- The group of reptiles characterized by a skull with no openings in the temporal area behind the orbit is anapsids.
Diapsids and Synapsids
- Diapsids are distinguished from synapsids by having two openings in the temporal area of the skull.
- A distinguishing feature of synapsids is the presence of one opening in the temporal area of the skull.
Amniotes
- A common adaptation to all amniotes is the presence of an amnion in the amniotic egg.
- The main function of the amnion is to provide a watery environment for the embryo to grow.
Order of Reptiles
- The order of reptiles that includes crocodiles, alligators, and birds is Archosauria.
Nitrogen Excretion
- In reptiles, the adaptation that leads to water-conserving nitrogen excretion is urea.
Classification
- Reptiles are classified as tetrapods, meaning they have four limbs, and amniotes, meaning they lay eggs with an amnion.
- The group that includes lizards, snakes, and worm-lizards is Squamata.
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