* Write two points of difference between:
37. Parallel venation and Reticulate venation
38. Physical change and Chemical change.
Answers
Answer:
Parallel Venation
Veins are parallelly arranged with one another and mostly occurs in monocots
Presence of midveins classifies parallel venation into –
Pinnate parallel venation/unicostate parallel venation – veins emerge from evident midvein found in the centre of the leaf lamina from the base to the apex where veins develop perpendicular to the midvein towards the margin and are parallel to each other.
Reticulate venation
Veins are arranged in the form of a network and mostly occurs in dicots
It can be classified into the following two types:
Pinnate reticulate venation/unicostate reticulate venation –
Explanation:
mark bas brainly
Answer:
reticulate venation
the design found on the veins of a leaf is net-like on both sides of the midrib is called reticulate venation
eg: Carrot, neem etc
parrallel venation
the design on the veins are parrallel to one another, its called parallel venation.
eg: Wheat, paddy etc
physical change
the changes that can be reversed are called physical change [temporary change]
New substances are formed.
chemical change
changes that can't be reversed are called chemical change [permanent change]
new substances aren't formed.