If your choices are the following, then the correct answer is C:
a. The aerobic bacteria were able to capture the sunlight and generate sugars from it.
b. The aerobic bacteria helped protect the cell against desiccation.
c. The aerobic bacteria metabolized sugars and generated large amounts of ATP.
d. The aerobic bacteria helped protect the cell against predation.
This is actually the endosymbiotic theory of how we humans (and other organisms alike) have evolved to have mitochondria inside our cells. Evidence to support this is that mitochondria have their own DNA different from ours.
<em>A</em> can't be the answer because that is more related to plants. <em>B and C </em>are also wrong because they simply do not provide those functions.
<span>The endosymbiotic theory states that aerobic bacteria took up residence inside these cells 2 billion years ago. These cells started producing oxygen for eukaryotic cells and are now known as mitochondria. The aerobic bacteria allowed these cells to be protected against some predators, as the cells could live in areas they once could not live in before.</span>
Flooding and intrusion of salt water in the low lying areas can adversely affect human life. This can happen in the following ways:
Flooding can cause many people to die due to drowning in the flood water.
Many people lose their habitat and all their belongings due to the entry of water into the settlements having only the ground floors. These people need to rehabilitated to safer regions.
The saline water percolates through the ground and mixes with the fresh water present in the water table, thereby making them saline and non-consumable.
People have to face the dearth of food, drinking water, clothes and electricity until rescue operations are sent.
Increased chance of transmission of water-communicable or water-borne diseases like diarrhoea.
Because the genotype means the genetic make-up of the cell, so saying that the genes of the plant are homozygous dominant show this genetic make-up of the plant.
