Advertisements
Advertisements
Question
Explain how sieve tubes manage to be living?
Advertisements
Solution
Sieve tube elements of phloem tissue lack nucleus but still they manage to live. This is because they are connected to the companion cells of phloem tissue via numerous plasmodesmata. Both sieve tube elements and companion cells develop from the same meristematic cell and form a functional unit. Companion cells provide proteins, ATP, and other signalling molecules to the sieve tube member as it contains extra number of mitochondria and ribosomes
APPEARS IN
RELATED QUESTIONS
Differentiate between parenchyma, collenchyma and sclerenchyma on the basis of their cell wall.
How does the cork act as a protective tissue?
What is the differences between collenchyma and sclerenchyma?
What are different types of tissues in plants? Describe simple tissues.
Differentiate between:
Parenchyma and collenchyma
The question has four answers. Choose the correct answer:
Collenchymatous hypodermis is found in
Choose the correct option.
Collenchyma is a type of ______ tissue.
Write a short note on peculiarity of a sclerenchyma cell wall.
Differentiate between meristematic and permanent tissues in plants
Name any two simple and two complex permanent tissues in plants.
