The stamens of the cotton flower are ________.
[1 mark]

monadelphous

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diadelphous

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polyadelphous

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adelphous

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Solution

The correct option is A monadelphous
The pollen producing part of a flower is called the stamen. It has a slender stalk called filament supporting the anther (bilobed).

Adelphous is a condition where the filaments are united but the anther remains free.

The types of adelphous conditions are as follows :

Monadelphous: When all the filaments are fused into one single tube. Examples include cotton and lady’s finger.

Diadelphous : Flowers have united filaments in two groups. Examples include pea and gram.

Polyadelphous : Flowers which have stamens with united filaments in more than two bundles. Examples include castor and lemon.

Figure : Types of adelphous conditions

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Question 28
In a bisexual flower, the young stamens are removed artificially but the flower produces fruit. Provide a suitable explanation for the given situation.

Q. A student collected 15 stamens from various flowers of different plant species. She arranged them on a slide to observe them. Select the most probable observations.
i) All flowers had stamens of the same length.
ii) Different flowers had stamens of different shapes and lengths.
iii) All flowers had stamens attached to them in a similar fashion.

(a) Draw a neat diagram of a flower showing its various parts. In this diagram mark stem, receptacle, sepals, petals, stamen and carpel.
(b) What name is given to (i) all the petals of a flower, and (ii) all the sepals of a flower?
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(d) What is the other name of carpel of a flower?
(e) What is the name of the yellow powdery substance present in the anther of a flower?

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The stamens of the cotton flower are ________. [1 mark]

The stamens of the cotton flower are ________.
[1 mark]