Parenchyma performs various functions like

1.	Photosynthesis, storage and secretion
2.	Photosynthesis, transportation and storage
3.	Photosynthesis, transpiration and secretion
4.	Excretion, transpiration and photophosphorylation

Collenchyma occurs in layer below
1. Parenchyma
2. Sclerenchyma
3. Epidermis
4. Endodermis

Collenchymatous cells are thickened due to deposition of
1. Cellulose
2. Hemicellulose
3. Pectin
4. All

The mechanical support to growing parts of plant such as young stem and petiole of leaf is provided by

Lignified cell wall is characteristic feature of
1. Parenchyma
2. Collenchyma
3. Sclerenchyma
4. None

  _________ are commonly found in the fruit walls of nut.

Complex tissue in plants have

Tracheids, vessels, xylem fibres and xylem parenchyma are components of
1. Simple tissue
2. Xylem
3. Sclereids
4. Pith

Elongated cells with thick and lignified walls and tapering ends is a characteristic feature of
1. Xylem parenchyma
2. Xylem fibres
3. Tracheids
4. Vessels

Dead cell without protoplasm is ___________.
1. Sclerenchyma
2. Tracheids
3. Parenchyma
4. Both A and B