Write three points of difference between bone and cartilage.
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1. Bone cells are know as osteocytes while cartilage cell are know as chondrocytes.

2. Presence of blood cell in bones while absence of blood cell in cartilage.

3. Bones are the hard, inelastic and a tough that form part of the vertebral skeleton while cartilage is a soft, elastic and flexible connective tissue that protects the bone from rubbing against each other.

"do a testcross with a homozygous recessive plant."