What is difference between Cleistogamy and chasmogamy

What is difference between Cleistogamy and chasmogamy pollination, hi guys in this article we know about Cleistogamy and chasmogamy pollination differences and understanding what is cleistogamy & chasmogamy pollination. Both are types of autogamy pollination in flowering plant.

What is difference between Cleistogamy and chasmogamy

What is difference between Cleistogamy and chasmogamy

Autogamy definition: Autogamy is type of self pollination in which Pollen Grain is transferred from anther to stigma within same flower. Flower may be encircle with Petal or open, encircled or closed flower is known as Cleistogamous and open flower is known as chasmogamous and type of pollination is known as Cleistogamy and chasmogamy respectively. Flower in which autogamy pollination is undergoes is known as autogamous flower. Autogamy examples: common examples of autogamy pollination are Sunflowers,orchids,peas,commelina, groundnut and tridax.

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The major difference between cleistogamy and chasmogamy: cleistogamy is type of autogamy self pollination in which its Floral and reproductive parts of flower is closed or encircle with Petals or flower which never open whereas chasmogamy is type of cross pollination in which its Floral and reproductive parts of flower does not encircle with petal or flower which is exposed their reproductive organ.

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Autogamy and chasmogamy difference

The major difference between cleistogamy and chasmogamy: cleistogamy is type of autogamy self pollination in which its Floral and reproductive parts of flower is closed or encircle with Petals or flower which never open whereas chasmogamy is type of cross pollination in which its Floral and reproductive parts of flower does not encircle with petal or flower which is exposed their reproductive organ.

Cleistogamy in commelina

Cleistogamy in commelina

◆ Cleistogamy:-

1) Cleistogamy is type of autogamy self pollination in which its Floral and reproductive parts of flower is closed or encircle with Petals or flower which never open. It is combination of two Greek word, Cleisto + gamy, cleisto means “closed” or “hidden” and gamy means “marriage” or “union”, so cleistogamy is “hidden marriage”.

2) Cleistogamy is a type of automatic self-pollination of certain plants that can propagate by using non-opening, closed flower self-pollinating flowers.

3) Common examples of cleistogamy is found in flower Commelina benghalensis and Especially well known in peanuts, commelina benghalensis, peas, and pansy this behavior is most widespread in the grass family. However, the largest genus of cleistogamous plants is Viola.

4) it’s do not need pollinating agent for pollination

5) its species have low biological fitness because pollination takes place within same flower

6) according to genetical, functions and ecology it is self pollination

7) its flower is generally colourless and shows positive geotropism.

Chasmogamy in groundnut

Chasmogamy in groundnut

◆ Chasmogamy pollination:

1) in this type of pollination there is a small chance of self pollination because flowers are remain open and their reproductive parts and floral structures are exposed and do not encircled with petals. Flowers that open at maturity to facilitate exposure of pollen and stigma for cross pollination are referred to as chasmogamous flower, they are large, conspicuous colourful flowers with nectar/scent to attract pollinators.

2) The example of the Chasmogamous flower are oxalis ,viola , peas, beans, hibiscus, groundnut,commelina flowers etc.

3) its need pollinating agent for cross pollination because flower are exposed

4) generally their flower is brightly coloured, more attractive and have scent

5) there is little chance of self pollination and more chance of cross pollination because flowers and its floral parts are exposed or open.

About the author

Balram Saw

My name is Balram Saw and by profession, I am a lecturer. I did my masters in M.sc Zoology. On this blog, I share all the information related to biology.

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