Differentiate between external and internal fertilization with examples
CBSE Class 12
CBSE Class 12 Biology
2016-08-27 09:54:58 UTC
External Fertilization :
Fertilization or syn gamy occurs in the external medium(water),i.e., outside the body of the organism.
Example - Aquatic organisms like algae,bony fishes and amphibians.
The offspring are extremely vulnerable to predators threatening their survival up to adulthood.
Internal Fertilization :
Fertilization or syn gamy occurs inside the body.
Examples - Terrestrial organisms,belonging to fungi,animals like reptiles,birds,mammals and plants like bryophytes,pteridophytes,gymnosperms & angiosperms.
There is large number of sperms produced but the number of eggs is very low.