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NEST2024BiologyBiological Classification

Chloroplasts of certain algal taxa such as Cryptophyta are surrounded by fourmembrane envelope. The most likely reason for the origin of four-membrane enveloped chloroplast structure is _____ .

Options

  1. Asecondary endosymbiosis, where a photosynthetic eukaryote was engulfed by another eukaryote.
  2. Bengulfment of the acquired chloroplast by host endoplasmic reticulum during the course of evolution.
  3. Cfusion of the acquired chloroplast with host membrane vesicles during the course of evolution
  4. Dacquisition of new genes to synthesize an additional membrane envelope around the acquired chloroplast

Correct answer

A. secondary endosymbiosis, where a photosynthetic eukaryote was engulfed by another eukaryote.

Step-by-step solution

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