SCIENCE
PLANT KINGDOM
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Monocots lack cambium
|
|
|
Monocots have scattered vascular bundles
|
|
|
Monocots have parallel venation
|
|
|
Monocots are herbaceous
|
Detailed explanation-1: -The huge chunk of meristematic tissue that can heal the cut wound in the stem is the cambium, which is made up of lateral meristem. Cambium is absent in the monocot plants. Thus it is impossible to perform graft in monocot plants.
Detailed explanation-2: -Monocots cannot be grafted as they lack the cambium tissue. The dicot plants have the cambium tissue which is a meristematic tissue and is present in the vascular bundles of the plant. This tissue has a regeneration capacity because of which it can form new tissue at the time of grafting.
Detailed explanation-3: -Assertion :The vascular cambium is absent in monocots. Reason: The monocots never show secondary growth.
Detailed explanation-4: -Monocotyledonous plants do not have cambium. The cambium is involved in the secondary growth (increased perimeter) of dicotyledonous plants.
Detailed explanation-5: -Since in monocots, vascular bundles are scattered, and moreover secondary growth is wanting due to the absence of cambium the union of xylem and phloem in grafting is not possible. Hence propagation through grafting is not successful in monocots.