meaning of senscence and abscission?
Answers
senscence is is the death of the plant which means delay of flowering
Abscissionwide ranging effects on plant growth and development
NCERT based Answer for Class 11 Biology Students
Senescence:
Senescence is a period between complete maturity and death of an organ or organism.
During this period, a gradual deterioration occurs in its structure by accumulation of waste metabolic materials and decrease in dry weight.
Abscission:
Abscission is shedding of leaves, fruits or flowers by a plant due to change in hormonal balance.
A separation (abscission) layer is developed within the region of attachment.
The middle lamella between certain cells in this layer is digested by enzyme cellulase and pectinase, making the region soft and weak.
The organ from plant is then easily detached whenever there is rainfall or wind.
Abscisic Acid (ABA) plays an important role in this process.
If you find the answer useful, plz mark it the Brainliest.
Visit our website for purchasing XI & XII Complete Syllabus Video Lectures
https://concept-tutorials.teachable.com