it's plural
Testes is the plural form of testis referring to a pair of male reproductive organs.
Monocyte is singular. Monocytes is plural.
Bacilli is plural. The singular is bacillus.
Microvilli is plural and Microvillus is singular.
Techincally, bacteria is plural. Bacterium is the singular. The reality of contemporary usage is that most people are unfamiliar with the word "bacterium" and use bacteria for both the singular and plural. However, you should try to avoid using bacteria as a singular in formal communication.
The singular word of testes is testis.
Singular: testisPlural: testes
Testes is the plural form of testis referring to a pair of male reproductive organs.
Testes is the plural form of testis, which means testicle.
practitioner is singular (plural practitioners)sofa is singular (plural sofas)satellite is singular (plural satellites)clips is plural (singular clip)dentist is singular (plural dentists)dollars is plural (singular dollar)article is singular (plural articles)magazines is plural (singular magazine)laminator is singular (laminators is plural)radios is plural (singular radio)
singular and plural
Singular: book / Plural: books Singular: cat / Plural: cats Singular: child / Plural: children Singular: foot / Plural: feet
Are is plural. "Is" is singular. For example, "There is a glove on the chair". That is singular. "There are gloves on the chair". That is plural.
"Has" is singular, e.g. He has, she has. "Have" is plural, e.g. They have, we have. The exception is "I" - e.g. I have.
The word team is singular; the plural form is teams.
'These' is the plural form of 'this'.
Who may be singular or plural.