NEET Important Questions for Plant Growth and Development (Biology)

1. Seed Germination:

Seed germination is like a plant's wake-up call. It's when a seed transforms into a tiny plant. Water, warmth, and oxygen team up to break the seed's dormancy, initiating growth. The seed sprouts a tiny root and shoot, eager to become a full-fledged plant.

• Phases of Plant Growth:

Plants have different growth phases. The first is the vegetative phase, where leaves and stems grow. Then comes the reproductive phase, when flowers appear, leading to the final phase, seed production. Each phase plays a vital role in the plant's life cycle.

• Plant Growth Rate:

Plant growth is like a slow dance. The speed varies based on factors like sunlight, water, and nutrients. Some plants grow quickly, while others take their time. The growth rate is crucial for understanding a plant's health and productivity.

• Conditions of Growth and Differentiation:

Plants are picky about their environment. The right temperature, soil, and light are essential. Differentiation is when cells become specialized for specific tasks, like roots for absorption or leaves for photosynthesis. Understanding these conditions helps us nurture plants effectively.

2. Dedifferentiation and Redifferentiation:

Plants have a cool trick up their sleeves called dedifferentiation. It's like hitting a rewind button on cells. When a plant needs to repair or regenerate, cells can go back to a simpler state, then redifferentiate into specialized cells again. It's a bit like a plant's superhero power for healing.

• Sequences of Developmental Processes in Plant Cells:

Just like building blocks, plant cells follow a sequence when growing and developing. From a tiny seed, cells divide, elongate, and differentiate into various tissues. This sequence is like a choreographed dance, ensuring that each step happens at the right time and in the right order.

• Growth Regulators - Auxin:

Meet auxin, the plant maestro. Auxin is a growth regulator, calling the shots in plant development. It controls cell elongation, root development, and even helps plants bend towards sunlight. It's like the conductor of an orchestra, coordinating the growth symphony in plants.

3. Gibberellin:

Think of it as a natural booster for stems, making them stretch tall and encouraging overall plant growth. It's like the plant's personal trainer, promoting seed germination and ensuring fruits reach their full size for successful reproduction. So, when you encounter gibberellin in the plant world, remember it's the powerhouse behind a plant's upward journey and vital developmental stages.

4. Cytokinin:

Cytokinins ensure that the plant's cells divide and differentiate effectively, promoting overall plant development. It's like the plant's growth coordinator, making sure everything happens at the right time and in the right way. So, when you encounter cytokinin in the plant world, think of it as the guiding force behind the harmonious growth and flourishing of plant cells.

5. Ethylene:

Think of it as the signal for fruits to get ready for your plate. Ethylene helps in the ripening process, turning green fruits into delicious, ready-to-eat ones. It's like the plant's chef, ensuring fruits become sweet and tasty. Ethylene also plays a role in other plant responses, like leaf dropping. So, when you see or hear about ethylene, know that it's the natural force behind the ripening magic happening in the fruits you enjoy.

6. ABA; Seed dormancy; Vernalisation; Photoperiodism:

ABA (Abscisic Acid) is a plant's dormancy manager. It tells seeds to take a nap, ensuring they stay dormant until the conditions are just right for sprouting. Vernalization is like winter school for plants, where they learn to flower better after a cold spell. Photoperiodism is the plant's timekeeper, deciding when it's time to flower based on day length. So, ABA regulates sleep, vernalization teaches winter resilience, and photoperiodism sets the plant's internal clock for the perfect blooming moment.

Important Questions in Plant Growth and Development

1. Which of the following is not correct?

(a.) Opening of a rosebud is an autonomic movement of growth

(b.) The coiling of tendrils around the support  is called Thigmotropic movement 

(c.) Auxin is responsible for the development of geotropic curvature in root

(d.) Movement of the pollen tube is chemotactic movement

Ans. (D)

2. Which of the following is wrong?

(a.) Photoperiodism was discovered by Garner and Allard in Tobacco.

(b.) Pigment cytochrome is associated with the phenomenon of photoperiodism.

(c.) Flowing will be inhabited in SDP if night is broken with a brief flash of light.

(d.) LDP will flower under continuous light throughout the day and night. 

Ans. (B)

3. Which of the following is not a function of Auxin?

(a.) Stoppage of  Cambial activity

(b.) Initiation of new roots

(c.) Inhibition of root growth

(d.) Production of ethylene

Ans. (A)

4. Richmond Kang effect is associated with?

(a.) Auxin

(b.) Gibberellin

(c.) Cytokinin

(d.) Ethylene

Ans. (C)

5. Which one of the following is positively photoblasted seed?

(a.) Allium

(b.) Lettuce

(c.) Maize

(d.) Pea

Ans. (B)

Syllabus for NEET

NEET (UG)'s syllabus includes three of the major subjects, which include:

1. Chemistry

2. Biology

3. Physics

In the article below, we have provided a detailed Biology syllabus. However, one thing that NEET aspirants must keep in mind is that the entire NEET syllabus contains topics only from Class 11th and Class 12th curriculum. So, students can accordingly prepare themselves with their strong and weak points.

Biology Syllabus for NEET 

Here is the NEET syllabus for Biology Class 11 and Class 12.

Best NEET Books for Biology

Here some of the best books we recommend for the preparation of NEET Biology:

• NCERT Biology Class 11 Textbook

• NCERT Biology Class 12 Textbook

• SC Verma Biology

• Trueman's Biology Vol 1 and 2

• Objective Biology by Dinesh

• Objective Biology by Ansari

• Pradeep Publication's Biology

• Biology by GR Bathla Publications

Things to Know about the National Eligibility Cum Entrance Test

Check out the important points for the NEET 2025 exam. 

• The National Testing Agency (NTA) conducts NEET and other entrance exams. 

• The NEET exam is 3 hours and 20 minutes long.

• Students can choose from MBBS, BDS, BAMS, BHMS, BNYS, and BSMS streams once they clear the NEET exam.

Eligibility Criteria for NEET

Check below the eligibility criteria for NEET.

• Applicants must have cleared the 10+2 examination or equivalent with a recognised board. The general category students need a minimum of 50%, while those belonging to the SC/ST/OBC categories require 45%.

• They must have Biology/Biotechnology, Chemistry, Physics, and English as their core subjects in Class 12.

• Students must be a minimum of 17 years of age to appear in the NEET exam, while there is no upper limit to the age.

NEET Plant Growth and Development Important Questions

The NEET exam is a national exam administered to all aspiring physicians who wish to pursue medical education at some of the top medical institutes in the country. Students pursuing NEET must prepare all the essential elements of the NEET syllabus to earn advanced credits at NEET and enter a reputable college.

Vedantu’s NEET Important Questions for Plant Growth and Development and other study materials are categorised by the subject matter experts who prepared these papers and materials after last year's questionnaire survey. Vedantu has tried his best to formulate important questions for students who are taking the NEET exam.

Important questions and information are useful for NEET and other candidates during the last-minute review. Essential information for NEET Biology - Plant Growth and Development covers all important topics and useful ideas for the exam. Check out the Vedantu website for a full set of important information and research materials for NEET Biology and complete the NEET Biology MCQs to check your understanding of the subject.

Quick Links for NEET 

• NEET 2025 Important Questions
  

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• NEET Previous Year Questions

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Conclusion

Exploring the NEET Important Questions centered on Plant Growth and Development in Biology significantly enriches one's comprehension of these intricate biological processes. These curated questions serve as guiding beacons, illuminating the multifaceted aspects of plant growth, from hormones to developmental stages. Engaging with these queries cultivates a profound understanding, reinforcing knowledge crucial for excelling in the NEET examination. Aspirants glean insights into the mechanisms steering plant growth, empowering them with comprehensive insights and confidence. Thorough preparation with these questions fosters a robust foundation, equipping candidates to navigate the NEET assessment with proficiency and mastery in the domain of plant biology.