can you pass a component through props to children

Yes, you can pass any value as a prop, including an object returned by React.createClass (aka component class). Assuming you are implementing dependency injection:

var TaskForm = React.createClass({
  render: function() {
    return (
        <div>{this.props.children}</div>
    );
  }
});

var GroupsItemsAccordionWrapper = React.createClass({
  render: function() {
    var TaskForm = this.props.TaskForm;
    return (
        <div>
          <TaskForm>Hello, world!</TaskForm>
        </div>
    );
  }
});

ReactDOM.render(
  <GroupsItemsAccordionWrapper TaskForm={TaskForm} />,
  document.getElementById('container')
);

(Note the curly brackets around TaskForm={TaskForm}).

Demo: https://jsfiddle.net/69z2wepo/37477/