A. The atmospheric concentration of CO2 at which photosynthesis just compensation point.R. The CO2 compensation point is reached when the amount of CO2 uptake is less than that generated through respiration because the level of CO2 in the atmosphere is more than that required for achieving CO2 compensation point.

The National Eligibility cum Entrance Test (Undergraduate) or NEET (UG) was formerly the All India Pre-Medical Test (AIPMT). The units in NEET biology subject are further divided into 16 chapters.  NEET exam is carried out for 720 marks, with 360 marks alone allotted for the Biology section.  Thus, there are 90 questions in the Biology section of NEET, 45 each from Botany and Zoology sections. NEET Biology topic- weightage based on past questions are given below. 7 Most Important Topics for NEET biology are: 1. Biological Classification 2. Morphology of flowering plants 3. Molecular... Show more

The National Eligibility cum Entrance Test (Undergraduate) or NEET (UG) was formerly the All India Pre-Medical Test (AIPMT).

The units in NEET biology subject are further divided into 16 chapters. 

NEET exam is carried out for 720 marks, with 360 marks alone allotted for the Biology section. 
Thus, there are 90 questions in the Biology section of NEET, 45 each from Botany and Zoology sections.

NEET Biology topic- weightage based on past questions are given below.

7 Most Important Topics for NEET biology are:
1. Biological Classification
2. Morphology of flowering plants
3. Molecular Basis of Inheritance
4. Principles of Inheritance and Variation
5. Animal Kingdom
6. Sexual Reproduction in Flowering Plants
7. Human Reproduction

19 Moderately Important Topics for NEET biology are:
1. Reproductive Health
2. Environmental Issues
3. Photosynthesis in Higher Plants
4. Breathing and Exchange of Gases
5. Plant Kingdom
6. Chemical Coordination and Integration
7. Cell- The Unit of Life
8. Organisms and Population
9. Biotechnology- Principles and Processes
10. Biotechnology and its Applications
11. Biodiversity and Conservation
12. Cell Cycle and Cell Division
13. Neural Control and Coordination
14. Anatomy of Flowering Plants
15. Digestion and Absorption
16. Biomolecules
17. Reproduction in Organisms
18. Evolution
19. Ecosystem

12 Less Important Topics for NEET biology are:
1. Strategies for enhancement in food production
2. Mineral Nutrition
3. Transport in Plants
4. Human Health and Disease
5. Structural Organisation in Animals
6. The Living World
7. Microbes in Human Welfare
8. Plant Growth and Development
9. Excretory Products and their Elimination
10. Locomotion and Movement
11. Body Fluids and Circulation
12. Respiration in Plants

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