Cada miembro tiene una tarea.

Cada miembro means each member and looks at the members one by one, individually.

Todos los miembros means all the members and treats them more as a group.

So:

• Cada miembro tiene una tarea. = Each member has a task.
• Todos los miembros tienen una tarea. = All the members have a task.

Both can be correct, but cada gives the sentence a more individual, distributive meaning.

Because cada is normally followed by a singular noun in Spanish.

So you say:

• cada miembro
• cada estudiante
• cada persona

Not:

• cada miembros

This is a very common pattern in Spanish: cada + singular noun.

Because the subject cada miembro is grammatically singular.

Even though it refers to more than one person in real life, Spanish treats cada miembro as one member at a time, so the verb must be singular:

• Cada miembro tiene...

Compare:

• Los miembros tienen... = plural subject, so plural verb
• Cada miembro tiene... = singular subject, so singular verb

Tiene is the third-person singular present indicative form of tener.

So it can mean:

• he/she has
• it has
• you have (formal usted)

In this sentence, it matches cada miembro, so:

• Cada miembro tiene una tarea.

A useful mini-conjugation:

• yo tengo
• tú tienes
• él/ella/usted tiene
• nosotros tenemos
• vosotros tenéis
• ellos/ellas/ustedes tienen

Because tener is a stem-changing verb in the present tense.

Its stem changes from e to ie in most forms:

• tengo
• tienes
• tiene
• tenemos
• tenéis
• tienen

So tiene is irregular in that way, but it is a very common pattern in Spanish.

Because in Spanish, a singular countable noun usually needs a determiner such as un, una, el, la, etc.

Here, tarea is a singular count noun, so una tarea is the natural form:

• Cada miembro tiene una tarea.

Without the article, tiene tarea would usually mean something more like has work/homework to do, which is a different idea.

So:

• una tarea = a task / one task
• tiene tarea = has work / has homework / has an assignment in a more general sense

It can mean both, depending on context.

Tarea often means:

• task
• assignment
• homework

In Cada miembro tiene una tarea, the most natural meaning is task or assignment, because we are talking about members of a group and what each person has to do.

If you were talking about school, tarea could easily mean homework.

Yes, you could, but it is slightly different.

• Cada miembro tiene una tarea. = Each member has a task.
• Cada uno tiene una tarea. = Each one has a task.

Cada miembro is clearer when you want to name the group role directly.
Cada uno is more general and is often used when the group is already understood from context.

So if you are specifically talking about members of a team, committee, or group, cada miembro is often the better choice.

Because Spanish often leaves out subject pronouns when they are not needed.

In this sentence, the subject is already stated explicitly:

• Cada miembro

So adding a pronoun would be unnecessary.

Spanish commonly does this because the verb form and context usually make the subject clear.

Yes. Miembro can also mean limb or body part in other contexts.

For example:

• Es miembro del club. = He/She is a member of the club.
• Se lesionó un miembro. = He/She injured a limb.

In your sentence, the meaning is clearly member because of the context.

The normal and most natural order is:

• Cada miembro
  • tiene
    • una tarea

That is, subject + verb + object.

Spanish can sometimes change word order for emphasis or style, but in a simple neutral sentence like this, the standard order is best.

So Cada miembro tiene una tarea is exactly what a learner should aim for.

A simple pronunciation guide is:

KA-da MYEM-bro TYE-ne OO-na ta-RE-a

A few helpful points:

• c in cada sounds like k
• miembro has two syllables: miem-bro
• tiene sounds roughly like TYE-ne
• tarea has three syllables: ta-re-a

In Spain, the r in tarea is a light tap, not a strong English r.