Cladistics is a method of classification of animals and plants that aims to identify and take account of only those shared characteristics which can be deduced to have originated in the common ancestor of a group of species during evolution, not those arising by convergence.the word cladistics is obtained from a greek word klados which means a group of organisms believed to comprise all the evolutionary descendants of a common ancestor. thus,Classification of organisms based on evolutionary as well as genetic relationships is called cladistics. Hope it helps u...

Explanation:
Classification of organisms is based on certain criteria that help in grouping them into categories for better understanding and study. The two statements given in the question are related to the classification of plants based on the concept of species. Let us understand each statement in detail and then see how they are related.

Statement A: Species is the basic unit of classification.
- Species is a fundamental unit of classification used in biology to group living organisms.
- It is the lowest taxonomic rank, and it is used to group individuals that share common characteristics and traits.
- Species can be defined as a group of organisms that can interbreed and produce fertile offspring.
- The concept of species helps in identifying and distinguishing different groups of organisms from each other.

Statement B: Two plants can be said to belong to the same species if they can reproduce freely with each other and form seeds.
- This statement is based on the biological concept of species.
- According to this concept, two plants are considered to belong to the same species if they can interbreed and produce fertile offspring.
- The ability to form seeds is an important criterion for determining the species of plants.
- If two plants can reproduce freely with each other and form viable seeds, they are considered to be the same species.

Now let us see how these two statements are related. Statement A defines the concept of species and how it is used in classification. Statement B is an example of how the concept of species is applied to plants. It explains how two plants can be grouped into the same species based on their ability to reproduce and form seeds. Therefore, both statements are true and related to each other.

Conclusion:
In conclusion, the concept of species is an important criterion for grouping organisms into categories for better understanding and study. The ability of two plants to reproduce freely with each other and form seeds is an important criterion for determining their species. Therefore, both statements A and B are true and related to each other.