NEET · Biology —

Evolution appeared 3 times across 1 year — 3.3% of Biology. This question is from Homology and Divergent Evolution.

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Questions 3 3
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Which of the following is not an example of convergent evolution?

Solution & Explanation

Related Formula

Homologous Organs (Forelimbs of Whales/Bats) arrow Divergent Evolution Analogous Organs arrow Convergent Evolution

Core Logic

Forelimbs of whales and bats have similar anatomical internal structure (humerus, radius, ulna, carpals, metacarpals) derived from a common ancestor but perform different functions. They are homologous organs representing DIVERGENT evolution, not convergent evolution.

All other options (eyes of octopus/mammals, wings of butterfly/birds, flippers of penguin/dolphins) are analogous organs representing convergent evolution.

Step 1: Conclusion

Forelimbs of whales and bats is an example of divergent evolution.

Pattern Recognition

Sees: "NOT an example of convergent evolution". Shortcut: Look for homologous organs arrow Forelimbs of mammals (whales and bats).

Chapter Mix

Class 12 Biology: Evolution

Reference Study Guides

Evolution

More Evolution Previous-Year Questions

Q140 neet_2024_05_may_morning Human Evolution Sequence
Evolution of human appears parallel to the progressive development of brain and language skills. As such, the evolution of individual species in the sequence of their appearance is:
  • A. Homo habilis arrow Homo erectus arrow Ramapithecus arrow Neanderthal arrow Homo sapiens
  • B. Ramapithecus arrow Homo habilis arrow Homo erectus arrow Neanderthal arrow Homo sapiens
  • C. Homo sapiens arrow Ramapithecus arrow Homo habilis arrow Neanderthal arrow Homo erectus
  • D. Neanderthal arrow Ramapithecus arrow Homo habilis arrow Homo erectus arrow Homo sapiens

Solution

Related Formula

Ramapithecus arrow Australopithecines arrow Homo habilis arrow Homo erectus arrow Neanderthal arrow Homo sapiens

Core Logic

The correct chronological sequence of human evolution based on fossil records and brain capacity is:

  • Ramapithecus (~15 mya)
  • Homo habilis (650–800 cc)
  • Homo erectus (~900 cc)
  • Neanderthal man (1400 cc)
  • Homo sapiens (Modern human)
Step 1: Verification

Matching with Option (2): Ramapithecus arrow Homo habilis arrow Homo erectus arrow Neanderthal arrow Homo sapiens.

Pattern Recognition

Sees: "evolution of individual species sequence". Shortcut: R arrow H.h. arrow H.e. arrow N arrow H.s.

Chapter Mix

Class 12 Biology: Evolution

Q179 neet_2024_05_may_morning Chronology of Evolution of Life Forms
Match List I with List II with respect to chronology of evolution of life forms:
List-IList-II
(A) About 65 mya(I) Jawless fish probably evolved
(B) About 500 mya(II) The dinosaurs suddenly disappeared from the earth
(C) About 350 mya(III) Seaweeds and few plants probably existed
(D) About 320 mya(IV) Invertebrates were formed and became active
Choose the correct answer from the options given below:
  • A. A(II), B(IV), C(I), D(III)
  • B. A(II), B(IV), C(III), D(I)
  • C. A(I), B(II), C(III), D(IV)
  • D. A(III), B(IV), C(I), D(II)

Solution

Related Formula

aligned 65 mya &arrow Extinction of Dinosaurs 500 mya &arrow Invertebrates active 350 mya &arrow Jawless fish evolved 320 mya &arrow Seaweeds and early plants aligned

Core Logic

Matching geological time milestones in evolution:

  • (A) About 65 mya arrow Dinosaurs suddenly disappeared from the earth (II)
  • (B) About 500 mya arrow Invertebrates were formed and became active (IV)
  • (C) About 350 mya arrow Jawless fish probably evolved (I)
  • (D) About 320 mya arrow Seaweeds and few plants probably existed (III)
Step 1: Result

The correct combination is A(II), B(IV), C(I), D(III).

Pattern Recognition

Sees: "65 mya 500 mya 350 mya 320 mya". Shortcut: 65 mya = Dinosaurs disappearance (A-II); 500 mya = Invertebrates (B-IV).

Chapter Mix

Class 12 Biology: Evolution

More Evolution Questions — neet_2024_05_may_morning

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JEE Physics: Waves (+15.5%) | Electrostatics: Concentric Shells (-29.7%) | Modern Physics: Photoelectric Clones (+34.2%) | Mathematics: Definite Integrals (+18.1%) | Chemistry: Coordination Splitting (-11.4%) | JEE Physics: Waves (+15.5%) | Electrostatics: Concentric Shells (-29.7%) | Modern Physics: Photoelectric Clones (+34.2%) | Mathematics: Definite Integrals (+18.1%) | Chemistry: Coordination Splitting (-11.4%)