In a woody dicot stem undergoing secondary growth, which tissue is responsible for increasing the girth of the stem?
Vascular cambium
Cork cambium
Apical meristem
Intercalary meristem
Related Questions
I. Youngest secondary phloem is just outside the cambium, while youngest secondary xylem is present inside the cambium
II. Oldest secondary phloem is just inside the primary phloem, while oldest secondary xylem is just above pith
III. Secondary medullary ray passes through both secondary xylem and secondary phloem
Select the incorrect statement from above
I
II
III
I and III
The growth of root and stem in length with the help of apical meristem is called …A…. Apart from primary growth most dicotyledonous plant exhibit an increase in girth called …B… Choose the correct combination of A, B and C in respect to the above paragraph
A-primary growth; B-secondary growth
A-secondary growth; B-primary growth
A-secondary growth; B-tertiary growth
A-primary growth; B-tertiary growth
In dicot stem, secondary growth is due to the activity of
Apical meristem
Lateral meristem
Cork
Bark
Which tissue forms the 'wood' of a tree?
Primary xylem
Secondary phloem
Secondary xylem
Cork
A plant with a damaged vascular cambium will likely have difficulty in:
Absorbing water from the soil
Carrying out photosynthesis
Transporting water, minerals, and sugars
Producing flowers
Tissues involved in secondary growth is/are
I. intercalary stem
II. vascular cambium
III. cork cambium
Select the correct options from below
I and II
II and III
I and III
I, II and III
Which of the following is characterized by dead cells that provide structural support in plants?
Phloem tissue
Xylem parenchyma
Collenchyma tissue
Sclerenchyma tissue
Which of the following is not a product of embryonic cells?
Root Cap
Cortex
Vascular Cylinder
Periderm
The heartwood of older trees is typically darker and more resistant to insects. This is primarily attributed to:
Secretion of secondary metabolites and their deposition in the lumen of vessels
Deposition of organic compounds like tannins and resins in the central layers of the stem
Deposition of suberin and aromatic substances in the outer layer of stem
Deposition of tannins, gum, resin and aromatic substances in the peripheral layers of stem
I. Youngest secondary phloem is just outside the cambium, while youngest secondary xylem is present inside the cambium
II. Oldest secondary phloem is just inside the primary phloem, while oldest secondary xylem is just above pith
III. Secondary medullary ray passes through both secondary xylem and secondary phloem
Select the incorrect statement from above
I
II
III
I and III
