LIFE SCIENCE

OBJECTIVE LIFE SCIENCE

EVOLUTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
____ & ____ are organelles that definitely arose from endosymbiosis.
A
Nucleus and cell membrane
B
Chloroplast and mitochondria
C
Mitochondria and nucleus
D
Cell wall and chloroplast
Explanation: 

Detailed explanation-1: -The endosymbiotic theory posits that some eukaryotic cell organelles, such as mitochondria and plastids, evolved from free-living prokaryotes.

Detailed explanation-2: -Scientists speculate that chloroplasts and algae arose through a series of endosymbiotic events. The first endosymbiotic event occurred when a eukaryotic cell engulfed a prokaryote (SF Fig. 2.4 Step 3). This process, known as primary endosymbiosis, created the mitochondrion.

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