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प्रश्न
Write down the different positions of floral leaves on the thalamus in detail?
उत्तर
Based on the position of calyx, corolla, and androecium in respect to the ovary on the thalamus, there are three floral whorl conditions. These are
(i) Hypogyny - In this flower, the ovary occupies the highest position on the thalamus, while the petals, sepals, and stamens are separately inserted below the ovary. The ovary in such flowers is said to be superior. E.g., mustard and china rose.
(ii) Perigyny - In this condition, the margin of the thalamus grows upwards to form a cup-shaped structure called calyx tube enclosing the ovary. The ovary here is said to be half inferior. E.g., plum and rose
(iii)Epigyny - In this flower, the margin of thalamus grows upwards enclosing the ovary completely and getting fused with it. The other parts of the flower are above the ovary. Hence, the ovary is said to be inferior. E.g. Sunflower, flowers of cucumber.
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संबंधित प्रश्न
Explain the terms Monadelphous, Diadelphous and Polyadelphous. In each case name a flower possessing such an androecium.
Define the following term and mention its main functions:
Perianth
Differentiate between:
Marginal placentation and Parietal placentation
Very Short Answer Type Question:
Name the various parts of pistil.
Short Answer Type Question:
What do you mean by a complete and incomplete flower?
Long Answer Type Question:
Explain the structure of a typical flower with the help of a diagram.
Plants are classified based on pigment and ______ of the plant.
Have you seen flowers? Try to answer the question given below.
What is the colour of the flower? ______
Pistil is ____ part of an fl ower.
The purplish-blue flowers of ______ that blossoms once in 12 years.
