Biology
Grade-7
Easy

Question

Observe the image and choose the species role.

  1. These species provide early signals of environmental deterioration. 
  2. These species are good indicator species since they are vulnerable to habitat loss and fragmentation due to their relationship with numerous plant species.
  3. These species are found in an area as a result of natural processes only. 
  4. These species were introduced purposefully in the Philippines as an additional income to farmers.

hintHint:

The species can be added to the ecosystem for useful purposes.

The correct answer is: These species were introduced purposefully in the Philippines as an additional income to farmers.


    • The species are endemic to particular regions.
    • Some species are added to the environment purposefully.
    • The snails are added to the philippine cultivation lands as an additional income for the farmers.

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