Is Commelina cleistogamous flower?

There is two types of flower in commelina: 1) cleistogamous flower and 2) chasmogamous flower. Cleistogamous flower exhibit positive geotropism and develop inside the soil along with the root, mostly it is white in colour and completely its reproductive and floral parts encircle with petals or closed or do not open.

Does Commelina produce both chasmogamous and cleistogamous flowers?

The correct answer is (C) Commelina.

What is cleistogamy in pollination?

Cleistogamy is a phenomenon where plants show self-pollination. The word cleistogamy means ‘closed marriage’. The flowers which show cleistogamy are known as cleistogamous flowers. It is well known in the grass family, such as peas, peanuts and pansy.

What is cleistogamy give an example?

Cleistogamy is defined as auto – pollination where the bisexual flowers will not open and thus pollinate only the stigma of the same flower. Example is Commelina.

Is Commelina a Chasmogamous?

Chasmogamous flowers have their anthers and stigma exposed, whereas cleistogamous flowers are closed and do not open at all. E.g. Oxalis, Viola and Commelina produce both cleistogamous and chasmogamous flowers.

What pollination is in Commelina?

Cleistogamy
Cleistogamy is a type of pollination in which self-pollination of flower takes place. The flowers of such type of pollination are bisexual, very small, inconspicuous, colourless and do not secrete nectar or honey.

Is Commelina a chasmogamous?

Is Commelina chasmogamous flowers?

In Helianthus (sunflower), Rosa (rose) and Gossypium (cotton), flowers are chasmogamous. So, the correct answer is option B, Commelina. Note: Cleistogamous flower prevents the cross pollination in bisexual or hermaphrodite flowers.

What is known as cleistogamy?

Cleistogamous Flowers. Cleistogamy means the formation of flowers that do not open (CL), and thus production of seeds is a result of autogamy. In contrast, flowers that open are called chasmogamous flowers (CH), and they have various types of breeding systems, depending on the taxon.

What is homogamy and cleistogamy?

– Homogamy: The maturation of anthers and stigma of a flower at the same time is called homogamy. As a rule, homogamy is essential for self- pollination. – Cleistogamy: Occurs when pollination and fertilization occur in unopened flower buds, it is known as cleistogamy.

Which plants produce cleistogamous flowers?

Cleistogamous flowers produce an assured seed-set as the pollination is not dependent on any external agent. Examples of plants showing cleistogamy are peas, peanuts, etc. Some plants produce both chasmogamous and cleistogamous flowers, e.g. Commelina, Viola, Oxalis, etc.

What is Chasmogamy and cleistogamy?