PYQSide ExamsMy practice

Evolution · Question 23

NEET (UG) 2022 (Phase 2)MCQEasy📈 Topic in 12% papers+4−1
1

Panspermia, an idea that is still a favourite for some astronomers, means:

  1. Transfer of spores as unit of life from other planets to Earth
  2. Creation of life from dead and decaying matter
  3. Creation of life from chemicals
  4. Origin of sperm in human testes

Answer

(1) Transfer of spores as unit of life from other planets to Earth

Solution

As per NCERT, early Greek thinkers thought units of life called spores were transferred to different planets including Earth.

∴ 'Panspermia' is the transfer of spores (units of life) from other planets to Earth; it is still a favourite idea for some astronomers.

⇒ Life from dead and decaying matter is spontaneous generation; life from chemicals is chemical evolution (Oparin–Haldane).

Answer: (1)

NEET (UG) 2022 (Phase 2)

Keep practising — Evolution

2

Select the correct statement regarding mutation theory of evolution.

  1. Large differences due to mutations arise gradually in a population
  2. This theory was proposed by Alfred Wallace
  3. Variations are small directional changes
  4. Single step large mutation is a cause of speciation
NEET (UG) 2022 (Phase 2)
3

The factor that leads to Founder effect in a population is :

  1. Genetic drift
  2. Natural selection
  3. Genetic recombination
  4. Mutation
NEET (UG) 2021
4

Match List-I with List-II. Choose the correct answer from the options given below.

  1. (a)-(i), (b)-(iv), (c)-(iii), (d)-(ii)
  2. (a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)
  3. (a)-(iii), (b)-(ii), (c)-(i), (d)-(iv)
  4. (a)-(ii), (b)-(i), (c)-(iv), (d)-(iii)
NEET (UG) 2021
5

Embryological support for evolution was disapproved by

  1. Oparin
  2. Alfred Wallace
  3. Karl Ernst von Baer
  4. Charles Darwin
NEET (UG) 2020
6

From his experiments, S.L. Miller produced amino acids by mixing the following in a closed flask

  1. CH3, H2, NH3 and water vapor at 600
  2. CH4, H2, NH3 and water vapor at 800
  3. CH3, H2, NH4 and water vapor at 800
  4. CH4, H2, NH3 and water vapor at 600
NEET (UG) 2020
7

Flippers of Penguins and Dolphins are examples of

  1. Adaptive radiation
  2. Natural selection
  3. Industrial melanism
  4. Convergent evolution
NEET (UG) 2020
8

Which of the following refer to correct example(s) of organisms which have evolved due to changes in environment brought about by anthropogenic action?

  1. B, C and D only
  2. A only
  3. A and C only
  4. D only
NEET (UG) 2020
9

A gene locus has two alleles A, a. If the frequency of dominant allele A is 0.4, then what will be the frequency of homozygous dominant, heterozygous and homozygous recessive individuals in the population?

  1. 0.16 (AA); 0.48 (Aa); 0.36 (aa)
  2. 0.16 (AA); 0.36 (Aa); 0.48 (aa)
  3. 0.36 (AA); 0.48 (Aa); 0.16 (aa)
  4. 0.16 (AA); 0.24 (Aa); 0.36 (aa)
NEET (UG) 2019
10

Variations caused by mutation, as proposed by Hugo de Vries, are :

  1. small and directional
  2. small and directionless
  3. random and directional
  4. random and directionless
NEET (UG) 2019
11

Match the hominids with their correct brain size : Select the correct option.

  1. (a)-(iii), (b)-(iv), (c)-(i), (d)-(ii)
  2. (a)-(iv), (b)-(iii), (c)-(i), (d)-(ii)
  3. (a)-(iii), (b)-(i), (c)-(iv), (d)-(ii)
  4. (a)-(iii), (b)-(ii), (c)-(i), (d)-(iv)
NEET (UG) 2019

All Evolution PYQs →

PDFDownload Evolution PYQs as PDF Free, with answer key and a QR code to every solution — print it or study offline⬇
All NEET Zoology chapters
Class 11Animal KingdomStructural Organisation in AnimalsBiomolecules (Biology)Digestion and AbsorptionBreathing and Exchange of GasesBody Fluids and CirculationExcretory Products and their EliminationLocomotion and MovementNeural Control and CoordinationChemical Coordination and Integration
Class 12Human ReproductionReproductive HealthEvolutionHuman Health and DiseaseBiotechnology: Principles and ProcessesBiotechnology and its ApplicationsBiology Experimental Skills