It is a serious question if seniors can answer it in detail. On CIC web site, it is clearly stated that
"You may accompany your spouse or common-law partner to Canada or visit them while they are in Canada, provided that you meet all the normal requirements for temporary residence. For example, if you require a temporary resident visa, you must apply for a visa and pay the appropriate processing fee.
If you apply for a temporary resident visa, a study permit or a work permit, you should submit your application at the same time as your spouse or common-law partner, when possible. If you are married, you should provide a copy of your marriage certificate. If you are in a common-law relationship, complete and submit the form, Statutory Declaration of Common-Law Union, along with the evidence listed in the form to support your relationship."
canadainternational.gc.ca/uae-eau/visas/spouses-conjoints.aspx
"Your children can come with you to Canada or visit you in Canada, provided that they meet all the normal requirements for temporary residence, including obtaining a temporary resident visa if necessary.
If your children will be accompanying you to Canada, it is best to submit their application (if required) with your own (for a study permit, work permit and/or temporary resident visa). If your children are minors, they do not require a separate application form, simply indicate that they will be accompanying you to Canada on your own application form. There is space on the application form to do so.
If your children will join you in Canada at a later date, they will need to submit a separate application if they require a study permit, work permit and/or temporary resident visa."
canadainternational.gc.ca/uae-eau/visas/minors-mineurs.aspx
Should student submit application for spouse and other dependent(s) with his/her own application? What do you say?