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Which of the following is a natural plant hormone?
নিম্নলিখিত কোনটি একটি প্রাকৃতিক উদ্ভিদ হরমোন?
Practice MCQ for SSC, UPSC, RRB Exams
A. DDT
A. ডিডিটি
B. Auxin
B. অক্সিন
C. Urea
C. ইউরিয়া
D. Glyphosate
D. গ্লাইফোসেট
Correct Answer: B
সঠিক উত্তর: B
Explanation
ব্যাখ্যা
The correct answer is
B. Auxin
.
Auxin
is a
natural plant hormone (phytohormone)
that regulates various aspects of plant growth and development.
It plays an important role in:
Cell elongation
Phototropism
(growth towards light)
Apical dominance
Root formation
Auxin is produced naturally in the
shoot tips and young leaves
of plants.
Other options are incorrect:
DDT
– A chemical insecticide, not a plant hormone.
Urea
– A nitrogen fertilizer, not a hormone.
Glyphosate
– A herbicide used to kill weeds, not a plant hormone.
সঠিক উত্তর হলো
B. অক্সিন
।
অক্সিন
হলো একটি
প্রাকৃতিক উদ্ভিদ হরমোন
, যা উদ্ভিদের বৃদ্ধি ও বিকাশ নিয়ন্ত্রণ করে।
অক্সিনের প্রধান কাজ:
কোষের দৈর্ঘ্য বৃদ্ধি
আলোয়ের দিকে বৃদ্ধি (ফোটোট্রপিজম)
শীর্ষ আধিপত্য
মূল গঠন
অক্সিন প্রাকৃতিকভাবে উদ্ভিদের
কচি পাতা ও কাণ্ডের আগায়
উৎপন্ন হয়।
অন্যান্য বিকল্পগুলি সঠিক নয়:
ডিডিটি
– এটি একটি কীটনাশক, উদ্ভিদ হরমোন নয়।
ইউরিয়া
– এটি একটি সার, হরমোন নয়।
গ্লাইফোসেট
– এটি একটি আগাছানাশক, উদ্ভিদ হরমোন নয়।
Related Questions
সম্পর্কিত প্রশ্ন
Coconut milk contains a cytokinin called ____ which promotes plant growth.
The function of plant hormone 'Gibberellins' is:
The hormone responsible for fruit ripening is:
Which hormone delays leaf senescence?
Which plant hormone is known as the ‘stress hormone’?
Which of the following plant hormones causes apical dominance?
Which hormone promotes cell division in plant roots and shoots?
Which hormone promotes seed dormancy?
Bolting in plants is promoted by:
Which hormone is used to induce parthenocarpy in tomatoes?
The only gaseous plant hormone is:
Which hormone promotes lateral root formation?
Which hormone is synthesized in root tips?
Which plant hormone is involved in stomatal closure during drought?
The plant hormone involved in flowering in pineapple is:
Which of the following is a synthetic auxin?
Seedless grapes are developed using:
Which of the following is a naturally occurring cytokinin?
Dwarfism in plants is due to the deficiency of:
Which hormone is transported basipetally (from apex to base) in plants?
Which plant hormone regulates phototropism?
Plant hormone promoting root hair formation:
The plant hormone used in tissue culture to promote shoot growth:
Gibberellin was discovered from:
Cytokinin was first isolated from:
Tropic movements in plants are regulated by:
Wound healing in plants is promoted by:
Which of the following is a synthetic cytokinin?
Which of the following is not a function of cytokinins?
Parthenocarpic fruits are developed using which hormone?
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