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Tracheids differ from the tracheary elements in:

1.	Having casparian strips	2.	Being imperforate
3.	Lacking nucleus	4.	Being lignified

Subtopic: Complex Tissue: Xylem |

Level 3: 35%-60%

AIPMT - 2014

Hints

Gymnosperms are also called softwood spermatophytes because they lack:

1. Cambium

2. Phloem fibres

3. Thick-walled tracheids

4. Xylem fibres

Subtopic: Complex Tissue: Xylem |

Level 3: 35%-60%

AIPMT - 2012

Hints

The chief water conducting elements of xylem in gymnosperms are:

1.	vessels	2.	fibres
3.	transfusion tissue	4.	tracheids

Subtopic: Complex Tissue: Xylem |

66%

Level 2: 60%+

AIPMT - 2010

Hints