Back to AI Flashcard MakerBiology /Biology NEET - XI: Chapter 6- Anatomy of Flowering Plants Part 6
What is alburnum?
Sap wood
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Key Terms
Term
Definition
What is alburnum?
Sap wood
What is duramen?
Heart wood
What is lighter in colour: sapwood or heartwood?
Sapwood
Tracheary elements are plugged by tyloses in heartwood or sapwood?
Heartwood
What is lighter in weight- sapwood/heartwood?
Sapwood
What is soft wood?
Gymnosperm wood
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| Term | Definition |
|---|---|
What is alburnum? | Sap wood |
What is duramen? | Heart wood |
What is lighter in colour: sapwood or heartwood? | Sapwood |
Tracheary elements are plugged by tyloses in heartwood or sapwood? | Heartwood |
What is lighter in weight- sapwood/heartwood? | Sapwood |
What is soft wood? | Gymnosperm wood |
What is non porous wood? | Gymnosperm wood |
Are xylem fibres abundant in softwood or hardwood? | Hard wood |
What are tyloses? | Ingrowth of adjacent parenchymatous cells into xylem vessels. |
Heartwood is absent in which dicot? | Poplar and willow |
Which meristem occurs between mature tissues? | Intercalary meristem |
Name a cylindrical meristem. | Lateral meristem |
Examples of lateral meristems are | Fascicular and interfascicular meristem |
Which simple tissue is found in patches in plants? | Collenchyma |
What are the two main functions of xylem? | Conduction of water and minerals, providing mechanical support to plants |
The thickenings of cell walls of tracheids are even. True/false? | False. They vary in form. |
Tracheids are connected with each through interperforations in their walls. True/false? | False. Vessels are connected with each through interperforations in their walls. |
Name the lignified tracheary element with wide cavity. | Vessels |
Do xylem fibres have septa? | Xylem fibres maybe septate or aseptate. |
Which cells in xylem are living? | Xylem parenchyma |
In which form are food materials stored in xylem parenchyma? | Starch or fat |
What is meant by endarch xylem? | Protoxylem lies towards the centre of the pit and metaxylem towards the periphery. |
How are companion cells and seive tube elements connected? | Through pit fields in their common longitudinal walls. |
What is the function of companion cells? | The companion cells help in maintaining pressure gradients in the seive tube elements. |
What is the shape of the cells present in phloem parenchyma? | Elongated, tapering cylindrical cells which have dense cytoplasm and a nucleus |