Question Video: Recalling the Key Characteristics of Kingdom Plantae | Nagwa Question Video: Recalling the Key Characteristics of Kingdom Plantae | Nagwa

Question Video: Recalling the Key Characteristics of Kingdom Plantae Biology

The picture provided shows an organism belonging to the kingdom Plantae. What are the characteristics of organisms belonging to this kingdom? [A] These organisms are eukaryotic, multicellular, and heterotrophic. [B] These organisms are prokaryotic, multicellular, and autotrophic. [C] These organisms are eukaryotic, multicellular, and autotrophic. [D] these organisms are prokaryotic, multicellular, and heterotrophic.

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Video Transcript

The picture provided shows an organism belonging to the kingdom Plantae. What are the characteristics of organisms belonging to this kingdom? (A) These organisms are eukaryotic, multicellular, and heterotrophic. (B) These organisms are prokaryotic, multicellular, and autotrophic. (C) These organisms are eukaryotic, multicellular, and autotrophic. Or (D) these organisms are prokaryotic, multicellular, and heterotrophic.

To answer this question, let’s start by reviewing what the terms eukaryotic, heterotrophic, prokaryotic, multicellular, and autotrophic mean. Organisms that are eukaryotic and organisms that are prokaryotic differ considerably in their cellular structure. Eukaryotic cells contain membrane-bound organelles including a membrane-bound nucleus, which prokaryotic cells do not. While the DNA in eukaryotic cells is packaged into multiple chromosomes found in this nucleus, in prokaryotic cells it’s found in the form of circular chromosomes and several plasmids found loose in the cytoplasm.

Most prokaryotic cells are unicellular, meaning they’re made up of only one cell like a bacterium. Most eukaryotes however are multicellular. This means that they’re made up of multiple often differently specialized cells like we humans are. As plant cells like this one do have a nucleus and other membrane-bound organelles like chloroplasts, we know that they’re eukaryotic and multicellular. So we can exclude options (B) and (D), as both of these say that they are prokaryotic.

Now we just need to work out whether plants are heterotrophic or autotrophic. So let’s look at these terms next. These two terms refer to how organisms can obtain their food. Some autotrophs, like this plant, can obtain their food by synthesizing it themselves through photosynthesis. They use water absorbed from the soil and carbon dioxide absorbed from the atmosphere in the presence of light energy usually from the sun to produce simple sugar molecules like glucose, which they can then use to make more complex nutritious molecules. As autotrophic organisms only need light in addition to these simple inorganic materials in order to produce their food, they are often sessile, meaning they do not move around.

Heterotrophic organisms on the other hand need to obtain their food from another living or once-living organism. Heterotrophs must consume other organisms in order to obtain their nutrition. They therefore need to be able to move around the place to find or hunt other organisms to eat.

We know that plants can produce their own food via photosynthesis, so they’re autotrophic. As we know that plants are not heterotrophic, we can exclude option (A). So we’ve worked out that the key characteristics of organisms belonging to kingdom Plantae are that these organisms are eukaryotic, multicellular, and autotrophic.

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