1. Tardigrade
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  3. Biology
  4. Assertion: First seven pairs of ribs are called true ribs. Reason: These ribs are not connected ventrally to the sternum.

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Q. Assertion : First seven pairs of ribs are called true ribs.
Reason : These ribs are not connected ventrally to the sternum.

Locomotion and Movement

Solution:

First seven pairs of ribs are called true ribs. Dorsally, they are attached to the thoracic vertebrae and ventrally connected to the sternum with the help of hyaline cartilage.