SELECT * FROM question_mgmt as q WHERE id=4977 AND status=1 SELECT id,question_no,question,chapter FROM question_mgmt as q WHERE courseId=12 AND subId=16 AND chapterId=372 and ex_no='1' AND status=1 ORDER BY CAST(question_no AS UNSIGNED) CBSE Free NCERT Solution of 8th science Reproduction in Animals differentiate between internal fertilization and e

Question:

Differentiate between internal fertilization and external fertilization.

Answer:

                   Internal fertilization

                     External fertilization

Fusion of male and female gametes that takes place inside the body is known as internal fertilization.

Fusion of male and female gametes that takes place outside the body is known as external fertilization.

In this, they give birth to the young ones directly.

In this, the organisms first lay down eggs and then they take care of them till the time of hatching at the particular place and after the hatching, the young ones arrive.

It occurs in animals that includes cows, hens, dogs and includes mammals also.

It occurs in aquatic animals like frog, fish, starfish etc.

 


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