GK
BIOLOGY
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
In plant which one of the following tissues is dead?
|
|
Parenchyma
|
|
|
Collenchyma
|
|
|
Sclerenchyma
|
|
|
Phloem
|
Explanation:
Detailed explanation-1: -Sclerenchyma is the dead mechanical tissue in plants. They are made up of long and narrow cells. These cells contain a cell wall that consists of lignin.
Detailed explanation-2: -The xylem tissues also lack cell organelles. Therefore, they are considered dead.
Detailed explanation-3: -The sclerenchyma is called the dead tissue because it lack protoplasm and has thick secondary walls which do not elongate during cell growth. Hence, mature cells get destroyed inside the sclerenchyma tissues. Example: coconut, jute etc.
There is 1 question to complete.