a what is venation b defined two types of venation c name two plants that have parallel venation
Answers
Answer:
Science NCERT Grade 6, Chapter 7, Getting To Know Plants is divided into five different sections. The first section begins with an activity wherein the plants are categorized into herbs, shrubs and trees based on properties like colour, height, hardness, thickness etc. The section ends with a short definition of herbs, shrubs and trees.
Apart from this, the chapter, Getting To Know Plants deals with different parts of the plants, their characteristics and importance.
The second section begins with a description on stems and classifies plants into creepers and climbers based on the strength of stems.
The third section of the chapter, Getting To Know Plants talks about leaf and its parts such as petiole, lamina, midribs, veins. This section also discusses two different types of venation found in leaves i.e. parallel venation and reticulate venation with the help of labelled diagram and activities. The fourth section of the chapter, Getting To Know Plants talks about the roots of plants wherein its classification into tap, lateral and fibrous is covered in detail with the help of activities.
The last section discusses flower with the help of a labelled figure showing its different parts like petals, sepals, stamens, pistil and ovary. The inner structure of an ovary with a longitudinal cut and a transverse cut is presented at the end of this section.
The chapter, Getting To Know Plants is covered under the following labels:
Herbs, Shrubs and Trees
Stem
Leaf
Root
Flower
Explanation:
Venation is the phenomenon of arrangement of veins in the lamina of the leaf surface. ... For example, leaves of dicot plants. In parallel venation, veins arise from the mid rib and run parallel. For example, leaves of monocot plants. In furcate venation, veins form dichotomous branching.
Two types of venation are reticulate venation and parallel venation. Reticulate venation involves net-like pattern of arrangement of veins. Most of the angiosperms with two cotyledons in the seed exhibit reticulate venation.
Parallel venation involves the veins running parallel to each other. Examples of plants showing parallel venation include grains, banana, canna, grass, musa, Oryza.
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