Analogous structures are structures in different organisms that serve the same purpose but have a different structural plan and no evolutionary relationship.
Thorns of Bougainvillea and tendrils of Cucurbita
The organs with similar functions but different in structural details and origin are known as analogous organs.
Hence, option B) Gills of prawn and lungs of man is the correct answer.
Analogous organs are organs performing similar functions but having different structural designs, not inherited from a common ancestor.
Homologous organs have similar structures as they are inherited from a common ancestor. For example, the forelimbs of vertebrates like humans, cats, whales, and bats have similar structures, reflecting their common ancestry.
Therefore, Gills of prawn and lungs of man are analogous structures.
Analogous structures have different origins or structures but function the same way
So, the correct answer is 'Lungs of Man and Gills of Prawn'.
The given graph shows the range of variation among population members, for a trait determined by multiple genes. If this population is subjected to disruptive selection for several generations, which of the following distributions is most likely to result?
Read the following passage and answer the questions that follow. According to evolutionary theory, every evolutionary change involves the substitution of a new gene for the old one and the new allele arises from the old one. Continuous accumulation of changes in the DNA coding for proteins leads to evolutionary differences. The chemical composition of DNA is basically the same in all living beings, except for differences in the sequence of nitrogenous bases. Given below are percentage relative similarities between human DNA and DNA of other vertebrates:
(a) What is the term used for the substitution of a new gene for the old one and the new allele arising from the old one during evolutionary process?
(b) Which one of the following holds true for the data provided in the above table?
(c) [(i)] To which category of evolution (divergent or convergent) does the following relationship belong? Justify your answer.
Human and Rhesus Monkey
OR
[(ii)] Differentiate between Convergent and Divergent evolution.
AB is a part of an electrical circuit (see figure). The potential difference \(V_A - V_B\), at the instant when current \(i = 2\) A and is increasing at a rate of 1 amp/second is:
Evolution is a process that occurs in changes in the genetic content of a population over time. Evolutionary change is generally classified into two: microevolution and macroevolution. The process of changes in allele frequencies in a population over time is a microevolutionary process. Three main mechanisms that cause allele frequency change are natural selection, genetic drift, and gene flow. On the other hand, macroevolution refers to change at or above the level of the species.