Question

Wings of locust, pigeon and bats are the example of
(A) Vestigial organs
(B) Analogous organs
(C) Homologous organs
(D) Exoskeleton

Answer 1

Hint: It is developed in organisms that are unrelated to each other. A special kind of resemblance i.e. superficial resemblance is noticed here. Their developmental stages are mainly different. Their functions are similar.

Complete answer:
Let’s discuss the choices and find the correct answer.
- Vestigial organs are also called the useless parts of the body. According to the studies, the characters of some organs remain active in their ancestor but after some generation it becomes lost. In the beginning of evolutionary history, the organs had done some specific functions and over the time it became extinct.
- Analogous organs are defined as organs that possess the function same as other organisms but have originated from different regions. Some examples of analogous organs can be the wing of a bird, bat or the wings of several insects.
- Homologous organs are the organs in different organisms which possess some similar characteristics but their actions differ with each other. As an example, if the structure of two different organisms remains the same, their organ function will vary.
- Exoskeleton is defined as the skeleton that is present in the external parts of our body. It protects and supports the organism's body more than the internal skeleton.
Hence Option B: Analogous organs is the correct answer.

Note: The peepal and opuntia leaves are the examples of analogous organs in plants. The peepal leaf is a normal leaf-like structure that helps in photosynthesis whereas the opuntia stem is converted into succulent leaf which also helps in photosynthesis.