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3 years ago

Which of the following statements is consistent with the assertion that protists are paraphyletic:

Biology

2 answers:

DanielleElmas [232]3 years ago

8 0

Answer:

A. Protists are more primitive than land plants and animals

Explanation:

Kingdom Protista is a kingdom that consists of one cell or many cells and has a nuclear membrane (eukaryotic organisms) and single cell.

Protists can be grouped into three parts which resemble animals (protozoa), resemble plants (algae) and resemble fungi. Most Protists live in water, because they do not have a barrier to protect their bodies from dry weather.

Kingdom Protista is a simple kingdom because it is only composed of one cell so that it can be grouped in its own kingdom. But there are also multicellular ones but still very simple compared to other

The characteristics of protists are as follows:

1. Unicellular organism (single-celled)

2. Eukaryotic (has a nucleus membrane)

3. Live solitary (alone) or colonize.

4. Generally can not make their own food (heterotof)

5. Live free, saprophytic and parasitic.

6. Can form cysts to survive.

From the characteristics mentioned above, it can be concluded that protists are 1-celled creatures so that they are more primitive than multicellular land plants and animals. Then in choice C. it is said that some protists are eukaryotic. Even though all protists are eukaryotic.

So the choice of the most appropriate answer is A. Protists are more primitive than land plants and animals

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Class : Senior High

Subject : Biology

Keywords

- Protists

- Paraphyletic

Alex_Xolod [135]3 years ago

4 0

<h3><u>Answer;</u></h3>

A) Some protists evolved into other eukaryotic groups.

<h3><u>Explanation</u>;</h3>

Protists are eukaryotes , making them much more complex than the prokaryotes, such as bacteria.
Protists may be classified as a paraphyletic group, since they are difficult to group under a single ancestor because of their diversity and dissimilarity from each other.
Protists evolved from prokaryotes, eventually giving rise to the entire line of eukaryotes that exists today.

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Part A

svetlana [45]

Considering the definition of density, you obtain that:

Part A: the density of gold is 19.3 g/cm³.
Part B: the density of iron is 7.8 g/cm³.

<h3>Definition of density</h3>

Density is defined as the property that allows to measure the amount of mass in a certain volume of a substance.

The expression for the calculation of density is the quotient between the mass of a body and the volume it occupies:

density= mass÷ volume

It can be deduced that density is inversely proportional to volume: the smaller the volume occupied by a given mass, the higher the density.

<h3>Density in this case</h3>

In this case, you know that:

A sample of gold has mass of 38.6 grams and a volume of 2 cm³.
A sample of iron has a mass of 46.8 grams and a volume of 6 cm³.

Replacing in the definition of density:

Gold: density= 38.6 g÷ 2 cm³
Iron: density= 46.8 g÷ 6 cm³

Solving:

<u><em>Gold: density= 19.3 g/cm³</em></u>
<u><em>Iron: density= 7.8 g/cm³</em></u>

In summary, the density of gold is 19.3 g/cm³ and the density of iron is 7.8 g/cm³.

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