Lenticels, formed during secondary growth in woody stems, primarily facilitate:
Water transport
Nutrient absorption
Gaseous exchange
Phloem loading
Related Questions
Alburnum is otherwise known as
Periderm
Sapwood
Heartwood
Bark
Dendrochronology is used for determining the age of?
Fassils
Rocks
Trees
Annuals
Dendrochronology is
Secondary growth
Apical growth
Seasonal variation
Determination of age of tree
Which meristem is responsible for the production of secondary tissues?
Primary meristem
Root apical meristem
Shoot apical meristem
Secondary meristem
Assertion: Monocot stems generally don't show significant increases in girth.
Reason: They lack a vascular cambium.
Choose the correct option:
Both Assertion and Reason are true, and Reason is the correct explanation for Assertion
Both Assertion and Reason are true, but Reason is not the correct explanation for Assertion
Assertion is true, but Reason is false
Assertion is false, but Reason is true
Cork is used as the stopper for bottles, for shock absorption and insulation because of
It is light and compressible
Non-reactive
Sufficiently resistant to fire
All of the above
If the vascular cambium of a dicot stem were damaged, which process would be most directly affected?
Primary growth
Photosynthesis
Transpiration
Secondary growth
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
During secondary growth new meristematic tissues arrising in the cortical region of the stem are called
Phellem
Phelloderm
Secondary cortex
Phellogen
Fascicular, interfascicular and extra-stelar cambium together constitutes
Ground meristem
Apical meristem
Intercalary meristem
Lateral meristem
