Anatomy of Flow...

Which will decay faster if exposed freely to the air

Periderm is formed from -

Abnormal secondary growth is observed in -

Statement–1 : The heart wood is more durable and resistant to the attack of the micro organisms and insects as compared to the sap wood.

Statement–2 : The heart wood contains organic compounds like oils, aromatic substances, gums, resin, tannins and phenol etc.

Heart wood of most of the woody trees, fails to conduct sap due to the obstruction by ?

Dendrochronology is the study of -

A timber merchant told his customer that log of wood which he was purchasing comes from a 20 years old tree, he told so by inspecting the -

Commercial cork is obtained from :-

Annual rings are well demarcated in trees growing in -

The trees growing in deserts will -

Protective layer found at the site of abscission is

In trees, the growth rings represent

Annual rings are the bands of

Annual rings and growth rings are formed due to the fluctuations in the activity of

Growth rings are formed due to the activity of

Complementary cells are formed by the activity of

Knots are formed in the wood due to -

When a tree grows older which of the following increase rapidly -

Sap wood differ from heart wood in being -

Sap wood is

In which of the following there is no differntiation heart wood and sap wood

In older woody tissue, the gaseous exchange takes place through

Lenticels do not occur on

Lenticels and its complementary cells are developed through the activity of

External Protective tissues are

Successive ring of vascular cambium is found in :-
(a) Cycas stem
(b) Gnetum ula stem
(c) Pinus stem
(d) Sunflower stem

If a stem is girdled

Which would do maximum harm to a tree

Cambium cells divide in which plane

Vascular cambium cuts cells more activity -