Select the correct pair.
Cells of medullary rays that form part of cambial ring - Interfascicular cambium
Loose parenchyma cells rupturing the epidermis and forming a lens shaped opening in bark - Spongy parenchyma
Large colorless empty cells in the epidermis of grass leaves - Subsidiary cells
In dicot leaves, vascular bundles are surrounded by large thick-walled cells - Conjunctive tissue
Related Questions
The age of tree can’t be determined by annual rings if the tree belongs to the
Temperate evergreen
Temperate deciduous
Xerophyte condition
Tropical forest
I. Annual rigs are formed as a result of seasonal environmental conditions
II. Tracheids/vessels elements are larger during periods when water is abundant
III. Tracheids/vessels elements have thicker wall during periods of water deprivation
IV. Wood formed in the previous years is darker than newer wood
Select the combination of correct statements from the options given below
I, II and III
II, III and IV
I, III and IV
I, II and IV
Estimation of the age of the tree is done by
Counting the epidermal rings
Measuring the pith diameter
Counting the annual rings
Counting the late woods only
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
In an annual ring, the light coloured part is known as
Early wood
Late wood
Heartwood
Sapwood
Which of the following cell do not respire?
Epidermal cell
Cork cell
RBC
Sieve tube cell
During secondary growth new meristematic tissues arrising in the cortical region of the stem are called
Phellem
Phelloderm
Secondary cortex
Phellogen
Which one of the following is the correct sequence of tissues present in dicot stem during secondary growth?
Phellogen, cork, primary cortex, secondary cortex
Cork, primary cortex, secondary cortex, phellogen
Primary cortex, Secondary cortex, phellogen, cork
Secondary cortex, cork, phellogen, primary cortex
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 age of a tree can be estimated by:
Measuring its height
Measuring the circumference of its trunk
Counting the annual rings
Analyzing the chemical composition of its leaves
