Asked in NUMS 2023 202380% of students get this right

This theory said "mitochondria and chloroplasts are, In effect, ancient bacteria which now live inside the larger cells"?

Correct answer: D. Endosymbiont Hypothesis

  • A. Darwin's theory of evolution
  • B. Lamarckism
  • C. Neo-darwinism
  • D. Endosymbiont Hypothesis

Explanation

This statement aligns with the endosymbiotic theory, which suggests that mitochondria and chloroplasts were once free-living bacteria that were engulfed by ancestral eukaryotic cells. This theory is not directly associated with Lamarckism or Darwin's theory of evolution.

This question appeared on the NUMS 2023 paper, which you can sit online with every answer explained.

Written and checked by , contributorLast updated
Report an error

The more specific you are, the faster it gets fixed. A source beats an opinion.

Prefer email? [email protected]

About Concept of Evolution

Evolution is the heritable change in populations over generations, driven by mutation, recombination, natural selection, genetic drift and reproductive isolation. Questions examine variation, adaptation, survival and reproduction, speciation, fossil and anatomical evidence, and the difference between individual acclimatization and evolutionary change in a population.

Practise Evolution

814 free Evolution MCQs from Biology, each with the correct answer and an explanation. Unlimited attempts, no account needed.

Discussion

Stuck on an option, or know a faster way to get there? Ask or explain it here.

No comments yet. Be the first to explain this one.

Exams that ask Biology questions like this

Biology is on 8 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.

More Concept of Evolution questions