Question

On the basis of position of floral parts on thalamus select the odd one out.
O Rose
O Plum
O China rose
Peach​

Answer 1

Answer:

In hypogynous flowers, the ovary occupies the highest position on the thalamus while other floral parts are situated below it. ... The ovary here is said to be half inferior e.g., plum, rose, peach. In epigynous flowers, the thalamus grows around the ovary fusing with its wall.

Answer 2

On the basis of the position of floral parts on the thalamus, China rose is the odd one out.

Hypogynous:

• The perianth and stamens are attached to the receptacle beneath the gynoecium in hypogynous flowers. The ovary is positioned above these organs, and the remaining floral organs emerge from below the carpel's site of origin.
• Ovaries can be found in some flowers above the stamens and perianth.
• Such flowers are referred to as hypogynous flowers and this structure is known as a superior ovary.
• Flowers on the tulip, mustard, china rose, potato, brinjal, and other plants are hypogynous.

Perigynous:

• The ovary is encased in a hypanthium, a floral tube created by the union of the stamens, petals, and sepals, which is linked to the receptacle beneath the gynoecium.
• The free portions of the petals, sepals, and stamens are joined to the rim of the hypanthium, and the ovary is superior. Rose, peach, etc.

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