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MCQs on NEET Biology Unit 4 Plant Physiology

Biology MCQs on Biology for NEET

Plant physiology is a crucial aspect of the NEET Biology syllabus. Understanding the intricate mechanisms governing plant life processes is essential for excelling in the NEET examination. Unit 4 of NEET Biology, dedicated to Plant Physiology, delves into the functioning of plants at a molecular, cellular, and organismal level.

In this guide, we'll explore the key concepts of NEET Biology Unit 4 and provide valuable resources such as free online mock tests and biology MCQs to aid in your preparation. This free online mock test on MCQs on Biology Unit-4 will be very helpful for students to prepare the subject easily.

Syllabus of Biology UNIT 4: Plant Physiology

Photosynthesis: Photosynthesis as a means of Autotrophic nutrition; Site of photosynthesis take place; pigments involved in Photosynthesis (Elementary-idea);

Photochemical and biosynthetic phases of photosynthesis; Cyclic and non-cyclic and photophosphorylation; chemiosmotic hypothesis; photorespiration C3 and C4 pathways; Factors affecting photosynthesis.

Respiration: Exchange gases; cellular respiration-glycolysis. fermentation (anaerobic), TCA cycle and electron transport system (aerobic); Energy relations- Number of ATP molecules generated; Amphibolic pathways; Respiratory quotient.

Plant growth and development: Seed germination; phases of plant growth and plant growth rate; Conditions of growth; Differentiation, dedifferentiation and redifferentiation; Sequence of developmental process in a plant cell; Growth regulators - auxin, gibberellin, cytokinin, ethylene, ABA;

Understanding NEET Biology Unit 4

NEET Biology Unit 4 covers a wide array of topics crucial for understanding plant life processes. From the transport of water and nutrients to photosynthesis and plant growth regulators, this unit delves deep into the physiological mechanisms that govern plant growth, development, and responses to environmental stimuli.

Transport in Plants

The transport of water, minerals, and organic solutes within plants is a fundamental process vital for their survival. Topics such as water potential, transpiration, and mineral nutrition are integral parts of this section. Understanding the mechanisms of water and nutrient uptake by roots and their transportation to various parts of the plant is essential for answering related questions in the NEET exam.


Photosynthesis is one of the most critical processes in plant physiology, wherein plants convert light energy into chemical energy to synthesize organic compounds. Key topics under this section include the light-dependent and light-independent reactions, factors affecting photosynthesis, and photorespiration. A thorough understanding of these concepts is necessary to answer complex questions in the NEET exam.

Plant Growth and Development

Plants exhibit remarkable growth and development throughout their life cycle, regulated by various internal and external factors. Topics such as plant hormones, photoperiodism, vernalization, and tropisms fall under this section. Understanding how plants respond to environmental cues and regulate their growth and development is crucial for scoring well in the NEET Biology exam.

Free Online Mock Tests and Biology MCQs for NEET

To excel in NEET Biology Unit 4, it's essential to practice a wide range of questions and assess your understanding of the concepts. Free online mock tests and biology MCQs provide an excellent opportunity for self-assessment and exam preparation. Here's how you can leverage these resources effectively:

Free Online Mock Tests

Numerous websites offer free online mock tests specifically designed for NEET Biology. These mock tests simulate the actual exam environment and help you evaluate your preparation level. By regularly taking these mock tests, you can identify your strengths and weaknesses, focus on areas that require improvement, and enhance your time management skills. Additionally, mock tests provide valuable insights into the pattern and types of questions commonly asked in the NEET exam, thereby boosting your confidence on the D-day.

Biology MCQs on Biology for NEET

Biology MCQs (Multiple Choice Questions) tailored for NEET preparation are invaluable resources for reinforcing your understanding of Unit 4: Plant Physiology. These MCQs cover a wide range of topics within plant physiology and test your knowledge and application skills. By practicing biology MCQs regularly, you can enhance your problem-solving abilities, improve your retention of key concepts, and develop a systematic approach to answering questions in the NEET exam.


Mastering NEET Biology Unit 4: Plant Physiology requires diligent study, thorough understanding of concepts, and ample practice. By focusing on topics such as transport in plants, photosynthesis, and plant growth and development, and utilizing resources like free online mock tests and biology MCQs, you can enhance your preparation and increase your chances of success in the NEET exam. Remember to stay consistent, stay focused, and believe in your abilities. With the right approach and dedication, you can conquer Unit 4 and achieve your desired score in NEET Biology.

NEET Biology Mock Test

  • NEET Biology Unit 4 Plant Physiology Mock Tests
  • Topic wise question answer based on latest NEET Biology Syllabus
  • The question is given in English language
  • You will get 60 seconds to answer each question.
  • Know your score when the test is complete

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Disclaimer: All NEET Biology Unit 4 Plant Physiology multiple choice questions and answers are prepared with accuracy but we do not claim for 100% accuracy so place checks the answers yourself also because there is the chance of mistyping.

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