Thorn is a modified branch because
It is hard, straight and pointed
It is a part of the plant
It arises in the axil of a leaf
It is a defensive organ
Related Questions
Which of the following statements regarding the anomalous secondary growth in Boerhaavia is INCORRECT?
A variant of cambium outside the vascular bundles
Concentric rings of secondary vascular bundles
Presence of medullary bundles
Inverted vascular bundles
Which of the following is NOT a function of lenticels?
Gaseous exchange
Transport of water and minerals
Transpiration
Removal of excess water in some plants
In banana, pineapple and Chrysanthemum, the lateral branches originate from the basal and underground portion of main stem and then come obliquely upward giving rise to leafy shoots
These branches are called
Runner
Corm
Bulb
Sucker
In Bougainvillea, thorns are modifications of which plant part?
Axillary buds
Leaves
Stipules
Stems
A horizontal underground stem is a
Corm
Phylloclade
Rhizome
Rhizoid
Which of the following statements is incorrect regarding the properties of a parallelogram?
Opposite sides are equal and parallel.
Opposite angles are equal.
Adjacent angles are supplementary.
The diagonals are equal in length.
The sharp, pointed structures that provide protection to Bougainvillea plants are modifications of:
Leaves
Stems
Stipules
Bracts
Nutation is shown by
Freely falling body
Freely rotating body
Body at rest
Body moving with uniform velocity
In a dicot stem, the pith is located:
Outside the vascular bundles
Between the xylem and phloem
In the center, surrounded by the vascular bundles
Within the vascular bundles
Green stems of unlimited growth, which have taken over the function of photosynthesis is called
Phylloclades
Tendrils
Modified shoot
Inflorescence
