Plant leaves are organs that are composed of multiple cell types, including palisade cells and guard cells. Palisade cells contain many chloroplasts and are the main sites of photosynthesis in a leaf. Guard cells are specialized epidermal cells that can change shape in order to control gas exchange between the leaf and its surroundings. Which claim is best supported by evidence provided in the passage?
Choose 1
(Choice A)
A
The various cell types found in a leaf have unique, specialized functions.

(Choice B)
B
A leaf is primarily made up of one cell type, which allows it to carry out the process of photosynthesis.

(Choice C)
C
Palisade and guard cells each have the capacity to carry out all the functions of the leaf, independently.

A

Explanation:

The passage states that leaves have a lot of organs made up of cells while describing plant leaves' organs.

It's not B, because the statement is false.

It's not C because C was focused on only palisade and guard cells leaving the rest of the passage behind

americans began to notice growing differences between the northern and southern sections of the country. there were more people living in cities in the north, which made it more urban. more people lived on farms in the south, which made it more rural. while many people were farmers in the northern states, there were now other ways to make a living, such as working in mechanical cotton gins factories manufacturing cloth, tools and other goods. people in the north supported high tariffs on goods imported from europe because the extra cost encouraged people to “buy american” instead. in the southern states, planters did not like tariffs because they sold most of their production to europe and bought their tools from there as well. southerners believed the protective tariff was something that only northern factory owners keep their profits high. so the southern politicians came up with an idea. they would opt out. they would simply ignore the protective tariff. it was ‘null and void’ in south carolina. the state would not collect the taxes on goods imported into south carolina, no matter what the president said they had to do. this decision led to the nullification crisis.

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