The given question is incomplete the complete question is:
The legs of a human and the limbs of a cat are similar in structure. These structures are called ______ vestigial homologous analogous structures. This similarity indicates that ________humans evolved from cats cats evolved from the ancestors of humans cats and humans share a common ancestor .
1) A. Vestigial B. Homologous C. analogous
2) A. Humans evolved from cats B. Cats evolved from ancestors of humans C. Cats and humans share a common ancestor.
Answer:1. (B)Homologous and
2. (C) Cats and humans share a common ancestor.
Step-by-step explanation:
Homologous structure can be defined as the two stricture in two different organism that appear similar.
They have evolved from the recent common ancestor so they are structurally similar. Due to adaptation of both of the organism in different environment their function is different.
Example: The limbs of humans are used for holding objects and performing various functions but the limbs of cats are used for walking.
They appear similar because their recent common ancestor is same. They are connected to each other because of ancestry.