In reproduction, we can get 2 types of organisms

  • Babies Similar to Adults
  • Babies Completely Different To Adults

 

Let's look at both of them

 

Babies are Similar to Adults

Example

In Human Beings,babies and adults have same body parts

 

Babies are Completely Different to Adults

Example

Tadpoles(Baby frog) look completely different  from adult frog

They change from tadpole(larva) to adults by process called metamorphosis

 

What is Metamorphosis?

The transformation from larva (immature form) into adult is called metamorphosis

Larva and Adult look completely different from each other

Example -

Frog, Silkmoth

 

metamorphosis - Teachoo.jpg

   

Example 1 - Metamorphosis in Frog

Egg of a frog develop into immature form called tadpoles

These tadpoles develop into adult frog

So there are 2 stages

  1. Hatching of egg to form tadpole
  2. Growth of tadpole into mature frog

 

Note:

Tadpole and frog look completely different from each other

Adult frog - Teachoo.jpg

Example 2 - Metamorphosis of Silk Moth

Egg of silkmoth develops into Caterpillar(larva)

Larva develops into pupa

This pupa develops into silkmoth

Note:

Tadpole and frog look completely different from each other

 

Questions

NCERT Question 3 (b) - Choose the most appropriate answer:

A tadpole develops into an adult frog by the process of

(i) fertilization. (ii) metamorphosis. (iii) embedding. (iv) budding.

View Answer

 

NCERT Question 8 - What is metamorphosis? Give examples.

View Answer

 

  1. Class 8
  2. Chapter 9 Class 8 - Reproduction In Animals

About the Author

Davneet Singh's photo - Teacher, Computer Engineer, Marketer
Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 9 years. He provides courses for Maths and Science at Teachoo.