what is meant by 'syncrony in pollen release and stigma receptivity'?

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Solution

Dear Student,

The release of pollen grains and stigma receptivity is synchronized. This means that these two events take place simultaneously or at the same time.
In case they do not occur at the same time, fertilization does not occur.
If pollen matures before or after the stigma matures, the pollen tube is not formed. Hence, fertilization does not take place.

Regards

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Similar questions

Q. Which of the following is true about autogamy?
I. Pollen grains are deposited on the stigma of the same flower.
II. It requires synchrony in pollen release and stigma receptivity.
III. Autogamy cannot occur without pollinating agents.
IV. Anthers and stigma needs to be close.

Q. Which of the following is an outbreeding device?

a. If pollen release and stigma receptivity are not synchronized.

b. If the anther and stigma are placed at different positions so that pollen cannot come in contact with the stigma of the same flower.

c. Self-incompatibility which prevents self-pollen (from the same plant) from fertilizing the ovules by inhibiting pollen germination or pollen tube growth in the pistil.

d. Production of the unisexual flower.

Q. In which of the following plants, pollen is released before the stigma becomes receptive in the same flower.

Match the following

$\begin{matrix} Column - I & Column-II (i) Dicliny & (a) Development of sterile pollen or ovary (ii) Dichogamy & (b) Anthers and stigma are placed at different position (iii) Herkogamy & (c) Pollen release and stigma receptivity are not synchronised (iv) Self sterility & (d) production of unisexual flowers \end{matrix}$

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