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
Ranking
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
Animation Courses
Colleges
Resources
-
Media, Mass Communication and Journalism
Exams
Colleges
Resources
-
Finance & Accounts
Top Courses & Careers
Colleges
Get Answers to all your Questions
- #1.4
- #8.11
- #Short Answer type
- #Very Short Answer type
- #Long answer type
- #Multiple Choice Questions (MCQs)
The role of ethylene and abscisic acid is both positive and negative. Justify this statement.
Answers (1)
Ans. Both ethylene and abscisic acid have positive and negative effects.
Positive Effects of Ethylene:
- Ethylene acts as a hormone which induces apical dominance and encourages horizontal growth
- It interrupts the dormancy of seeds and buds
- Ethylene aids in the initiation of the root
- Ethylene also helps in the ripening of certain fruits
Negative Effects of Ethylene:
- Ethylene causes abscission of leaves because it hastens the senescence of leaves
- Ethylene delays longitudinal development in the plant
- Ethylene extends the dormancy of lateral buds
Positive Effects of Abscisic Acid:
- Helps in reduce water loss in the form of transpiration
- Induces flowering in short-day plants
- In certain plants such as Rosen, abscisic acid encourages parthenocarpic development as well as the rooting of stem-cutting
- Helps plants form resistance to environmental stress
- Promotes root initiation in certain plants
Negative Effects of Abscisic Acid:
- Encourages the abscission of flowers and fruits and induces leaf senescence.
- Inhibits and slows down the cambial activity
- Retards the effect and functioning of growth hormones.
- Promotes dormancy in seeds and
View full answer
Similar Questions
- 0.3780 g of an organic chloro compound gave 0.5740 g of silver chloride in Carius estimation. Calculate the percentage of chlorine present in the compound.
- 1.0 mol of a monoatomic ideal gas is expanded from state (1) to state (2) as shown in figure. Calculate the work done for the expansion of gas from state (1) to state (2) at 298 K.
- At what temperature is the root mean square speed of an atom in an argon gas cylinder equal to the rms speed of a helium gas atom at – 20 °C ?
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?
