ACT Exam > ACT Videos > Biology for ACT > Phytochromes Action Photoperiodicity
Phytochromes Action Photoperiodicity Video Lecture | Biology for ACT
|
208 videos|226 docs|136 tests
|
FAQs on Phytochromes Action Photoperiodicity Video Lecture - Biology for ACT
| 1. What are phytochromes and how do they work? |  |
Ans. Phytochromes are photoreceptor proteins found in plants that play a crucial role in regulating various physiological processes in response to light. They absorb red and far-red light, undergoing structural changes that allow them to switch between two forms: Pr (inactive) and Pfr (active). This activation triggers a signaling cascade that influences photoperiodicity and other light-dependent responses.
| 2. How do phytochromes control photoperiodicity in plants? | |
Ans. Phytochromes control photoperiodicity by sensing the duration of light and darkness. They measure the length of day and night and transmit this information to the plant's circadian clock. This clock then regulates various physiological and developmental processes, such as flowering, dormancy, and growth, based on the photoperiod information received from phytochromes.
| 3. What is the significance of photoperiodicity in plant growth and development? | |
Ans. Photoperiodicity plays a crucial role in plant growth and development as it allows plants to adapt and optimize their responses based on the changing seasons. For example, the ability to sense day length helps plants determine the right time to flower, adjust their growth patterns, and prepare for environmental changes. It is an essential mechanism for survival and reproduction in many plant species.
| 4. How do phytochromes influence flowering in plants? | |
Ans. Phytochromes regulate flowering in plants by integrating photoperiod information with other environmental cues. They control the production of flowering hormones, such as florigen, which determine when a plant transitions from vegetative growth to reproductive growth. Depending on the specific photoperiodic requirements of a plant species, phytochromes can either promote or inhibit flowering by modulating the expression of genes involved in flowering pathways.
| 5. Can phytochromes be manipulated to control plant growth and development? | |
Ans. Yes, phytochromes can be manipulated to control plant growth and development. Scientists have been studying phytochrome mutants and genetically modified plants to understand their functions better and potentially harness their capabilities for agricultural purposes. By manipulating the expression or activity of phytochromes, it is possible to influence flowering time, seed germination, and other important plant traits. However, further research is needed to fully understand the complexities of phytochrome signaling and its potential applications.
About this Video
|
4.95/5 Rating |
|
Nov 15, 2024 Last updated |
Video Description: Phytochromes Action Photoperiodicity for ACT 2024 is part of Biology for ACT preparation.
The notes and questions for Phytochromes Action Photoperiodicity have been prepared according to the ACT exam syllabus.
Information about Phytochromes Action Photoperiodicity covers all important topics for ACT 2024 Exam.
Find important definitions, questions, notes, meanings, examples, exercises and tests below for Phytochromes Action Photoperiodicity.
Introduction of Phytochromes Action Photoperiodicity in English is available as part of our Biology for ACT for ACT & Phytochromes Action Photoperiodicity in
Hindi for Biology for ACT course. Download more important topics related with notes, lectures and mock test series for
ACT Exam by signing up for free.
Description
Video Lecture & Questions for Phytochromes Action Photoperiodicity Video Lecture | Biology for ACT - ACT full syllabus preparation | Free video for ACT exam to prepare for Biology for ACT.
Information about Phytochromes Action Photoperiodicity
Here you can find the meaning of Phytochromes Action Photoperiodicity defined & explained in the simplest way possible.
Besides explaining types of Phytochromes Action Photoperiodicity theory, EduRev gives you an ample number of questions to practice Phytochromes Action Photoperiodicity tests,
examples and also practice ACT tests.
|
208 videos|226 docs|136 tests
|
|
Explore Courses for ACT exam
|
|
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
Related Searches
past year papers
,Phytochromes Action Photoperiodicity Video Lecture | Biology for ACT
,mock tests for examination
,shortcuts and tricks
,Summary
,ppt
,MCQs
,Phytochromes Action Photoperiodicity Video Lecture | Biology for ACT
,practice quizzes
,Phytochromes Action Photoperiodicity Video Lecture | Biology for ACT
,Exam
,Free
,study material
,Extra Questions
,Viva Questions
,Important questions
,Semester Notes
,Sample Paper
,Objective type Questions
,Previous Year Questions with Solutions
,video lectures
;
Study Phytochromes Action Photoperiodicity on the App
Students of ACT can study Phytochromes Action Photoperiodicity alongwith tests & analysis from the EduRev app,
which will help them while preparing for their exam. Apart from the Phytochromes Action Photoperiodicity,
students can also utilize the EduRev App for other study materials such as previous year question papers, syllabus, important questions, etc.
The EduRev App will make your learning easier as you can access it from anywhere you want.
The content of Phytochromes Action Photoperiodicity is prepared as per the latest ACT syllabus.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup