Collenchyma is seen only in herbaceous dicots. Why?
Because collenchyma cells are not formed in monocots due to absence of lignin
Because woody dicots have sclerenchyma tissues to provide mechanical support
Because monocots grow as small herbs and don't need much mechanical support
Herbaceous dicots need collenchyma cells for photosynthesis
Collenchyma cells contain thick cell walls and provide support and structure.
Collenchyma generally forms ___________.
Which of the following statements are true?
The collenchyma occurs in layers below the epidermis in monocotyledonoos plants
Xylem parenchyma cells are living and thin walled and their cell walls are made up of lignin
Sclerenchyma cells are usually dead and without protoplasts
The companion cells are specialised sclerenchymatous cells
Phloem fibres are generally present in the primary phloem
Living simple mechanical tissue of plants is
- Cytoplasm of Chlorella
- Mycelium of a green mould such as Aspergillus
- Spore capsule of a moss
- Pollen tube of Pinus
A simple mechanical tissue devoid of lignin is: