All the following plant groups possess phloem parenchyma except
1.Monocots
2.Dicots
3.Gymnosperm
4.All
Posted Date:-2019-05-06 11:00:49
Autumn wood is present at
1.end of annual rings
2.beginning of annual rings
3.middle of annual rings
4.None
Posted Date:-2019-05-06 10:45:24
Durable is
1.spring wood
2.sap wood
3.heart wood
4.None
Posted Date:-2019-05-06 10:51:20
Heartwood is also called as
1.Sap wood
2.Duramen
3.Porous wood
4.Non porous wood
Posted Date:-2019-05-06 10:47:00
In an old stem the major part of wood is filled with tannins, resins, gums etc. This region is known are
1.Sap wood
2.Soft wood
3.Heart wood
4.All
Posted Date:-2019-05-06 10:52:02
Monocot that showing anaomalous secondary growth?
1.Rice
2.Dracena
3.Maize
4.None
Posted Date:-2019-05-06 10:50:31
Phloem consists of
1.vessels, sieve tube cells, phloem parenchyma, phloem fibres
2.sieve tube cells, companion cells, phloem parenchyma, phloem fibres
3.vessels, tracheids, phloem parenchyma, phloem fibres
4.vessels, tracheids, sieve tube cells, companion cells
Posted Date:-2019-05-06 11:02:08
The age of tree by counting the annual rings is called
1.Chronology
2.Countology
3.Dendrology
4.Dendrochronology
Posted Date:-2019-05-06 10:53:12
Tracheid percentage is 90-95% in
1.Sap wood
2.Soft wood
3.Hard wood
4.None
Posted Date:-2019-05-06 10:48:48
Tracheids and vessels are present in all except
1.Equisetum
2.Marselia
3.Gnetum
4.Cycas
Posted Date:-2019-05-06 10:58:05
Vessels are present in all plants except
1.Gnetum
2.Pinus
3.Rose
4.Mango tree
Posted Date:-2019-05-06 10:55:25
Which of the following are the examples of phloem fibres
1.flax
2.jute
3.hemp
4.all
Posted Date:-2019-05-06 11:00:19
Which of the following region in heartwood is light in colour?
1.Peripheral region
2.Middle region
3.Outer region
4.Inner region
Posted Date:-2019-05-06 10:48:00
Which of the following statement is true about sieve tube cells
1.companion cells are non-nucleated and are regulated by nucleated sieve cell
2.Sieve tube cells are nucleated but devoid of mitochondria and ER
3.Sieve tube cells are present in all plants
4.companion cells are nucleated and regulates activity of non- nucleated sieve tube cell
Posted Date:-2019-05-06 10:59:40
Which of the following tissues are involved in water conduction ?
1.Tracheids and tracheae
2.Xylem and Phloem
3.Parenchyma and sclerenchyma
4.Xylem fibres and bast fibres
Posted Date:-2019-05-06 11:02:59
Which of the following water conducting element is considered as most advanced
1.multiple vessels
2.annular tracheids
3.tracheids
4.none
Posted Date:-2019-05-06 10:57:29
Which of the following wood is entirely lacks vessel
1.Non porous wood
2.Porous wood
3.Soft wood
4.Hard wood
Posted Date:-2019-05-06 10:49:42
Which type of wood helps in formation of Major part of annual rings?
1.spring wood
2.autumn wood
3.Both A and B
4.None
Posted Date:-2019-05-06 10:43:50
Wood parenchyma is formed from
1.fusiform initials
2.collenchyma cells
3.ray initials
4.Nonw
Posted Date:-2019-05-06 10:58:46
Xylem consists of
1.tracheids, vessels and companion cells
2.tracheids, vessels, fibres and parenchyma
3.tracheids, fibres and parenchyma
4.None
Posted Date:-2019-05-06 10:56:42