Browse by Stream
-
Engineering and Architecture
Exams
Colleges
Predictors
Resources
-
Computer Application and IT
Quick Links
Colleges
-
Pharmacy
Colleges
Resources
-
Hospitality and Tourism
Colleges
Resources
Diploma Colleges
-
Competition
Other Exams
Resources
-
School
Exams
Top Schools
Products & Resources
-
Study Abroad
Top Countries
Student Visas
-
Arts, Commerce & Sciences
Exams
Colleges
Upcoming Events
Resources
-
Management and Business Administration
Exams
Colleges & Courses
Predictors
-
Learn
Online Courses
Engineering Preparation
Medical Preparation
-
Online Courses and Certifications
Top Streams
Specializations
- Digital Marketing Certification Courses
- Cyber Security Certification Courses
- Artificial Intelligence Certification Courses
- Business Analytics Certification Courses
- Data Science Certification Courses
- Cloud Computing Certification Courses
- Machine Learning Certification Courses
- View All Certification Courses
Resources
-
Medicine and Allied Sciences
Colleges
Predictors
Resources
-
Law
Resources
Colleges
-
Animation and Design
Exams
Predictors & Articles
Colleges
Resources
-
Media, Mass Communication and Journalism
Exams
Colleges
Resources
-
Finance & Accounts
Top Courses & Careers
Colleges
Get Answers to all your Questions
- #National Eligilibility Cum Entrance Test
- #Class 11
- #Medical
- #National Eligibility Cum Entrance Test
- #Biology
- #Plant Physiology
Which of the following observation is credited to scientist Went with respect to auxin?
Option: 1
The transmittable influence of the tip of coleoptile could be transmitted to the subapical region through a block of gelatin
Option: 2
The coleoptiles of canary grass respond to unilateral illumination by growing towards the light source
Option: 3
Isolation of first naturally occurring auxin
Option: 4
The agar block containing the transmittable chemical caused bending of a decapitated coleoptile of Avena according to its concentration.
Answers (1)
- The discovery started with the observation of Charles Darwin and his son Francis Darwin when they observed that the coleoptiles of canary grass (Phalaris canariensis) responded to unilateral illumination by growing towards the light source (phototropism).
- After a series of experiments, it was concluded that the tip of coleoptile was the site of transmittable influence that caused the bending of the entire coleoptile.
- Boysen-Jensen showed that transmittable influence of the tip of coleoptile could be transmitted to the subapical region through a block of gelatin but not through the mica plate.
- Paal replaced the previously exposed excised tip eccentrically over the stump of the coleoptile. He observed greater growth on that side even in the dark.
- Paal discovered that the hormone travels basipetally (from the tip to base).
- Went showed that agar block containing the chemical caused bending of a decapitated coleoptile of Avena according to its concentration.
- This growth-promoting chemical was named as Auxin.
-
Went showed that agar block containing the chemical caused bending of a decapitated coleoptile of Avena according to its concentration.
View full answer
NEET 2024 Most scoring concepts
- Just Study 32% of the NEET syllabus and Score up to 100% marks
Trending Articles/News
Latest Question
- A sum of money under compound interest doubles itself in 4 years. In how many years will it become 16 times itself? Option: 1 1
- A certain loan amounts, under compound interest, compounded annually earns an interest of Rs.1980 in the second year and Rs.2178 in the third year. How much interest did it earn in the first year?<
