Which of the following are NOT used to classify kingdoms of organisms?

a. complexity of the organism

b. invertebrate or vertebrate

c. method of obtaining nutrition

d. type of cell that makes up the organism

D?

Thank you!

To determine which of the given options is NOT used to classify kingdoms of organisms, we can analyze each choice one by one:

a. Complexity of the organism: This is commonly used to classify organisms into different kingdoms. For example, organisms that are structurally simpler, such as prokaryotes, are placed in the kingdom Monera, while those with higher complexity, such as animals, are classified under the kingdom Animalia.

b. Invertebrate or vertebrate: The distinction between invertebrates (organisms without a backbone) and vertebrates (organisms with a backbone) is one of the aspects considered in classification. Invertebrates are grouped into different phyla, while vertebrates belong to the phylum Chordata.

c. Method of obtaining nutrition: This is also an important criterion used in classification. Organisms can be classified as autotrophs (organisms that produce their own food, like plants) or heterotrophs (organisms that obtain nutrients by consuming other organisms or organic matter, like animals). This differentiation plays a role in grouping organisms into different kingdoms.

d. Type of cell that makes up the organism: This choice, the type of cell that makes up an organism, is not used to classify kingdoms. Kingdoms are typically classified based on broader characteristics such as cell structure and organization. Specifically, organisms are classified as either prokaryotes (lacking a membrane-bound nucleus and organelles) or eukaryotes (possessing a membrane-bound nucleus and organelles). However, the distinction between these types of cells is not used to classify kingdoms themselves.

Therefore, the correct answer is d. Type of cell that makes up the organism.