Q3. Difference betweem reticulate venation and parallel venation with eg. q4. Define winnowing and evaporation
Answers
Answer:
Parallel venation can be described as the veins showing the parallel arrangement to one another, all over the leaf blade or lamina, while the veins in reticulate venation show network or web-like arrangement all over the leaf blade or lamina. ... Reticulate venation is seen in dicot plants like mango, hibiscus, ficus, etc.
to free (grain) from the lighter particles of chaff, dirt, etc., especially by throwing it into the air and allowing the wind or a forced current of air to blow away impurities. to drive or blow (chaff, dirt, etc.) away by fanning.
Evaporation is the process of a substance in a liquid state changing to a gaseous state due to an increase in temperature and/or pressure. Evaporation is a fundamental part of the water cycle and is constantly occurring throughout nature.
Q3.
Parallel venation is when the formation of veins are parallel to each other through the leaf. It starts from the base and extends till the tips. For example, grasses; they have veins running parallel to each other.
Reticulate venation refers to the arrangement of veins in a leaf where they form a web-like structure. Smaller and more delicate veins emerge from the midrib and spread in the entire leaf.For example, mango and rose leaves; their veins form a network.
Q4.
Winnowing is generally known as phatkna, pichorna or anaj parchana in Hindi. The village people use the winnowing fork and more commonly, the winnowing fan, known as chhaaj in Hindi, for winnowing.
Evaporation: The process of liquid changing into vapours even below its boiling point is called as evaporation.