{"id":4349,"date":"2026-04-06T12:04:45","date_gmt":"2026-04-06T12:04:45","guid":{"rendered":"https:\/\/ksquareinstitute.in\/blog\/?p=4349"},"modified":"2026-04-08T11:42:52","modified_gmt":"2026-04-08T11:42:52","slug":"top-5-plant-physiology-questions-for-neet","status":"publish","type":"post","link":"https:\/\/ksquareinstitute.in\/blog\/top-5-plant-physiology-questions-for-neet\/","title":{"rendered":"Top 5 Plant Physiology Questions for NEET (Important PYQs with Concepts)"},"content":{"rendered":"\n

Plant Physiology is a crucial yet often underestimated unit in NEET Biology. Many students find it slightly conceptual, but with proper understanding and NCERT-focused preparation, it becomes a highly scoring section. Questions are frequently asked from photosynthesis, respiration, plant growth regulators, and transport in plants. In this article on Top 5 Plant Physiology Questions for NEET<\/strong>, we will cover the most important previous year questions (PYQs) along with clear concepts and explanations to help you master this unit.<\/p>\n\n\n\n

\"Top<\/figure>\n\n\n\n

Why Practice Top 5 Plant Physiology Questions for NEET?<\/h2>\n\n\n\n

Plant Physiology contributes around 8\u201310 questions in NEET. Most of these questions are either concept-based or directly derived from NCERT statements and diagrams. Practicing the Top 5 Plant Physiology Questions for NEET<\/strong> helps you understand recurring patterns such as enzyme functions, growth hormones, and physiological processes like transpiration and photosynthesis.<\/p>\n\n\n\n

Another advantage is that many questions are predictable if you have a strong grip on NCERT diagrams and definitions.<\/p>\n\n\n\n

Question 1: Photosynthesis \u2013 Site of Light Reaction<\/h2>\n\n\n\n

Question:<\/strong>
The light reaction of photosynthesis takes place in:<\/p>\n\n\n\n

Options:<\/strong>
A. Stroma
B. Thylakoid membrane
C. Cytoplasm
D. Outer membrane of chloroplast<\/p>\n\n\n\n

Correct Answer:<\/strong> B. Thylakoid membrane<\/p>\n\n\n\n

Explanation:<\/strong>
The light reactions occur in the thylakoid membranes of chloroplasts, where pigments like chlorophyll absorb light energy. This leads to the formation of ATP and NADPH. The stroma, on the other hand, is the site of the dark reaction (Calvin cycle). This is a direct NCERT concept and is frequently asked in the Top 5 Plant Physiology Questions for NEET<\/strong>.<\/p>\n\n\n\n

Question 2: Transpiration Pull<\/h2>\n\n\n\n

Question:<\/strong>
Water movement in plants occurs mainly due to:<\/p>\n\n\n\n

Options:<\/strong>
A. Root pressure
B. Capillary action
C. Transpiration pull
D. Osmosis<\/p>\n\n\n\n

Correct Answer:<\/strong> C. Transpiration pull<\/p>\n\n\n\n

Explanation:<\/strong>
The cohesion-tension theory explains that transpiration pull is the primary force responsible for the upward movement of water in plants. Water evaporates from leaves, creating a negative pressure that pulls water upward through xylem. Questions like this are very common in the Top 5 Plant Physiology Questions for NEET<\/strong>, especially from transport in plants.<\/p>\n\n\n\n

Question 3: Respiration \u2013 Respiratory Quotient (RQ)<\/h2>\n\n\n\n

Question:<\/strong>
The respiratory quotient (RQ) for carbohydrates is:<\/p>\n\n\n\n

Options:<\/strong>
A. 0.7
B. 1
C. 1.3
D. 0.5<\/p>\n\n\n\n

Correct Answer:<\/strong> B. 1<\/p>\n\n\n\n

Explanation:<\/strong>
RQ is defined as the ratio of CO\u2082 evolved to O\u2082 consumed. For carbohydrates, this ratio is 1 because equal amounts of CO\u2082 are produced and O\u2082 is consumed. This is a commonly repeated numerical concept in the Top 5 Plant Physiology Questions for NEET<\/strong>.<\/p>\n\n\n\n

Question 4: Plant Growth Regulators<\/h2>\n\n\n\n

Question:<\/strong>
Which plant hormone is responsible for cell elongation?<\/p>\n\n\n\n

Options:<\/strong>
A. Cytokinin
B. Gibberellin
C. Auxin
D. Abscisic acid<\/p>\n\n\n\n

Correct Answer:<\/strong> C. Auxin<\/p>\n\n\n\n

Explanation:<\/strong>
Auxins promote cell elongation, especially in stems. They play a key role in phototropism and apical dominance. Although gibberellins also promote growth, auxins are primarily responsible for elongation. Questions on plant hormones are very frequently included in the Top 5 Plant Physiology Questions for NEET<\/strong>.<\/p>\n\n\n\n

Question 5: Photorespiration<\/h2>\n\n\n\n

Question:<\/strong>
Photorespiration occurs in:<\/p>\n\n\n\n

Options:<\/strong>
A. Only chloroplast
B. Only mitochondria
C. Chloroplast, peroxisome, and mitochondria
D. Cytoplasm only<\/p>\n\n\n\n

Correct Answer:<\/strong> C. Chloroplast, peroxisome, and mitochondria<\/p>\n\n\n\n

Explanation:<\/strong>
Photorespiration is a process involving three organelles: chloroplast, peroxisome, and mitochondria. It occurs when oxygen is used instead of carbon dioxide by RuBisCO, leading to energy loss. This is a very important concept in the Top 5 Plant Physiology Questions for NEET<\/strong>, often tested directly from NCERT.<\/p>\n\n\n\n

Key Concepts Covered in Top 5 Plant Physiology Questions for NEET<\/h2>\n\n\n\n

The Top 5 Plant Physiology Questions for NEET<\/strong> highlight the most important topics such as photosynthesis, transpiration, respiration, plant hormones, and photorespiration. These concepts are repeatedly asked because they form the foundation of plant functioning.<\/p>\n\n\n\n

Understanding processes like light reaction and Calvin cycle, water transport mechanisms, and hormone functions is essential. Diagrams from NCERT, especially of chloroplast structure and transport pathways, are extremely important and should be revised regularly.<\/p>\n\n\n\n

Common Mistakes Students Make<\/h2>\n\n\n\n

While preparing the Top 5 Plant Physiology Questions for NEET<\/strong>, students often confuse the sites of different processes, such as light and dark reactions. Another common mistake is mixing up functions of plant hormones like auxin and gibberellin.<\/p>\n\n\n\n

Students also tend to ignore numerical concepts like RQ, which can easily fetch marks if practiced properly. Careful reading of NCERT and repeated revision can help avoid these errors.<\/p>\n\n\n\n

Preparation Strategy for Plant Physiology<\/h2>\n\n\n\n

To master the Top 5 Plant Physiology Questions for NEET<\/strong>, focus on understanding rather than memorizing. Start with NCERT and ensure clarity of each process. Revise diagrams thoroughly, as many questions are based on them.<\/p>\n\n\n\n

Practice PYQs regularly and make short notes for quick revision of formulas, hormone functions, and key definitions. With consistent revision, this unit can become highly scoring.<\/p>\n\n\n\n

FAQs on Top 5 Plant Physiology Questions for NEET<\/h2>\n\n\n\n

Q1. How many questions come from Plant Physiology in NEET?<\/strong>
Around 8\u201310 questions are asked.<\/p>\n\n\n\n

Q2. Is Plant Physiology difficult for NEET?<\/strong>
It can feel conceptual, but with NCERT-based preparation, it becomes manageable.<\/p>\n\n\n\n

Q3. Which topics are most important in Plant Physiology?<\/strong>
Photosynthesis, respiration, transport, and plant hormones are key areas.<\/p>\n\n\n\n

Q4. How should I revise Plant Physiology quickly?<\/strong>
Focus on diagrams, key processes, and PYQs like the Top 5 Plant Physiology Questions for NEET<\/strong>.<\/p>\n","protected":false},"excerpt":{"rendered":"

Plant Physiology is a crucial yet often underestimated unit in NEET Biology. Many students find it slightly conceptual, but with proper understanding and NCERT-focused preparation, it becomes a highly scoring section. Questions are frequently asked from photosynthesis, respiration, plant growth regulators, and transport in plants. In this article on Top 5 Plant Physiology Questions for […]<\/p>\n","protected":false},"author":1,"featured_media":4343,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[127,68],"tags":[674,675,689,687,673,690,691,688],"class_list":["post-4349","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-free-study-material","category-biology","tag-biology-important-questions","tag-neet-2026-biology","tag-neet-biology-plant-physiology","tag-neet-plant-physiology-questions","tag-neet-preparation-biology","tag-photosynthesis-questions-neet","tag-plant-hormones-neet","tag-plant-physiology-pyqs-neet"],"blocksy_meta":{"page_structure_type":"type-1","styles_descriptor":{"styles":{"desktop":"","tablet":"","mobile":""},"google_fonts":[],"version":6}},"_links":{"self":[{"href":"https:\/\/ksquareinstitute.in\/blog\/wp-json\/wp\/v2\/posts\/4349","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ksquareinstitute.in\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ksquareinstitute.in\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ksquareinstitute.in\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ksquareinstitute.in\/blog\/wp-json\/wp\/v2\/comments?post=4349"}],"version-history":[{"count":2,"href":"https:\/\/ksquareinstitute.in\/blog\/wp-json\/wp\/v2\/posts\/4349\/revisions"}],"predecessor-version":[{"id":4484,"href":"https:\/\/ksquareinstitute.in\/blog\/wp-json\/wp\/v2\/posts\/4349\/revisions\/4484"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ksquareinstitute.in\/blog\/wp-json\/wp\/v2\/media\/4343"}],"wp:attachment":[{"href":"https:\/\/ksquareinstitute.in\/blog\/wp-json\/wp\/v2\/media?parent=4349"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ksquareinstitute.in\/blog\/wp-json\/wp\/v2\/categories?post=4349"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ksquareinstitute.in\/blog\/wp-json\/wp\/v2\/tags?post=4349"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}