Question

The internal structure and arrangement of bones of the forelimbs of lizard, bird and
human being are different.( true or false)​

Answer 1

Answer:

True

Explanation:

The homologous organs are similar in form but perform different functions in different organisms.

The bone structure observed in wings of birds, forelimbs of lizard and frog is similar, but performs different functions. They belong to the same group of animals, the vertebrates, and therefore exhibit homology.

Homology in animals - Organs such as bat's wing, wings of birds, seal's flipper, forelimb of a horse, and human arm have a common underlying anatomy that was present in their last common ancestors; therefore their forelimbs are homologous organs.

Answer 2

Answer:

Explanation:

What are Bone Structure ?

A firm, thick, robust, and long-lasting outer layer is called compact (cortical) bone. It creates the outer layer of bone and accounts for around 80% of mature bone mass.

The remaining 20% of bone is made up of trabecular (or spongy) bone, which is made up of a network of rod-like structures called trabeculae.

Bones require ongoing repair and reconstruction since they are not a static tissue.

This approach involves three different sorts of primary cells from trusted sources.

Osteoblasts are in charge of building and maintaining bone. They create an osteoid protein combination, which is then mineralized to form bone.

Osteocytes are calcified, dormant osteoblasts that stay in the bone that they have formed. They interact with other bone cells and assist the bone's metabolic processes.

Large cells with many nuclei make up osteoclasts. To break down worn bone, they employ acids produced by certain processes (Trusted Source). Resorption is the name of this process. Osteoclasts help repair broken bones and provide passageways for nerves and blood vessels.

True, beacuse Although the homologous organs look similar, they have diverse purposes in various creatures. Although similar, the bone structure seen in bird wings, lizard forelimbs, and frog hindlimbs serves various purposes. They display homology since they are both members of the vertebrate class of animals.

To learn more about Bone Structure refer to :

https://brainly.in/question/5531794?referrer=searchResults

https://brainly.in/question/5417455?referrer=searchResults

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