Class 11

No, a candidate must have passed class 10th and 12th before joining the DGCA ground class. You can still do your class 12th from private but you cannot apply for DGCA ground class unless you pass your class 12th with alteast 45% marks in PCM stream.

The IPU CET exam for B.Sc Medical Imaging Technology typically covers topics from both Class 11 and Class 12 syllabus. In this exam you have a good understanding on the basics knowledge about physics, chemistry and biology.

• In physics you have to cover mechanics, thermodynamics, electromagnetism, and modern physics.
• In Chemistry you have to cover inorganic chemistry, organic chemistry, and physical chemistry.
• In Biology you have to cover botany, zoology, and biotechnology.

Thats  all. Best of luck for your examination.

Yes, you can easily get admitted to UP board, if you have passed your 10th class. You just need to fill out the registration form provided by the Up board, this can be done both online or offline depending upon your convince. 

You can do class 12 if you failed in class 11 by NIOS (national institution of open schooling)

Yes, you can pursue a bachelor's degree in biology even if you haven't studied mathematics in your 11th and 12th grades. Many universities and colleges do not require a strong background in mathematics for biology programs. Instead, they focus on your knowledge of biology and sometimes chemistry. 

In 11th and 12th if you have PCB (Physics, Chemistry, Biology) instead of PCMB (M* Mathematics) still you can go for further studies in Biology.

Yes, you can choose the correspondence / Private option there from the board so that you don't need to attend the class regularly & the fees are less compare to regular. My suggestion is to go with NIOS so that you have subject wise option along with on demand exam option with 4 times in a year rest is on your decision.