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From Karnataka Open Educational Resources
→Notes for teachers
===Notes for teachers===
===Notes for teachers===
''These are short notes that the teacher wants to share about the concept, any locally relevant information, specific instructions on what kind of methodology used and common misconceptions/mistakes.''
''These are short notes that the teacher wants to share about the concept, any locally relevant information, specific instructions on what kind of methodology used and common misconceptions/mistakes.''
#Fishes are the first to evolve as vertebrates
#They complete their life cycle only in aquatic medium,hence they use gills for respiration and fins for locomotin in water and have gelatinous scales for easy gliding in water.
#Two chambered heart facilitates one way blood circulation,so that oxygenated and deoxygenated blood circulates in a common channel.
#They are stenothermal and can adapt to wide range of temperature.
#Both fertilization and foetus development are external ,and are unisexual.
===Activities===
===Activities===
#Activity No #1 '''page_name_concept_name_activity1'''
#Activity No #1 '''page_name_concept_name_activity1'''
