- Laying eggs
- Giving birth to underdeveloped young in a pouch
- Presence of a placenta for fetal development
- External fertilization
Category: Biology etea medical mcqs
- Lay eggs
- Give birth to live young
- Have pouches
- Are aquatic
- Reptilia
- Aves
- Mammalia
- Amphibia
- Heavy bones
- Absence of feathers
- Pneumatic bones and feathers
- Cold-bloodedness
- Reptilia
- Aves
- Mammalia
- Amphibia
- Gills only
- Lungs only
- Skin, lungs, and gills (in larvae)
- Trachea
- Amphibia
- Reptilia
- Aves
- Mammalia
- Osteichthyes
- Chondrichthyes
- Amphibia
- Reptilia
- Chondrichthyes
- Osteichthyes
- Amphibia
- Aves
- Chondrichthyes
- Osteichthyes
- Agnatha
- Amphibia
- Locomotion
- Feeding and respiration
- Sensory perception
- Support
- Urochordata
- Cephalochordata
- Vertebrata
- Hemichordata
- Brain and spinal cord
- Notochord
- Vertebral column
- Muscles
- Locomotion
- Support
- Respiration
- Digestion
- Spinal cord
- Vertebral column
- Skull
- Rib cage
- Spinal cord
- Nerve cord
- Stomochord
- Notochord
- Chitin
- Ossicles (calcium carbonate plates)
- Silica
- Bone
