9. Match column - I with column-ll and select the correct option
Column -1
A) Thorns
B)PHYLLOCLADES
C) RUNNERS
D)STILTROOTS
E)HAUSTORIA
COLOUMN 2
1)VEGETATIVE PROPAGATION
2)DEFENSIVE MECHANISM
3) MECHANICAL SUPPORT
4) ABSORPTION OF NUTRIENTS
5) PHOTOSYNTHESIS
ABCDE
a) V IV III II I
b) II V III I IV
c) II V I III IV
d) III V I II I
Answers
answer is
c) A- II B-V C-I D-III E-IV
Explanation:
A thorn is a sharp spike that protrudes from the stem of a plant. Literal thorns, found on bushes and other plants, serve to protect plants from animals that might like to eat them.
Phylloclade is a special modified photosynthetic stem present mostly in xerophytes. They have a reduction in leaf size, early leaf fall, the formation of scaly leaves, spine, thorns, cuticle etc to reduce transpiration. In such cases, the stem becomes flattened and carry out photosynthesis
A runner is the stem portion of the plant that tends to grow horizontally as opposed to upright like the main stem. The end tip of the runner can produce buds that develop into new plants that are clones.
Stilt roots are aerial adventitious roots which grow obliquely downwards from basal nodes of the main stem and fix firmly to the soil. Such supporting roots are found in plants growing near banks of rivers, ponds etc.
Haustoria: a slender projection from the root of a parasitic plant, such as a dodder, or from the hyphae of a parasitic fungus, enabling the parasite to penetrate the tissues of its host and absorb nutrients from it.
I hope it is clear fam ;-)