Study Material Page 8 of 24 | Reproductive Biology of Angiosperms | CUET (Common University Entrance Test) PG Botany (SCQP07) | Covers Complete Syllabus

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Monocliny (Bisexuality) - It means flowers are bisexual and some special devices are present for preventing self-pollination.
Homogamy: When both the sex organs of a flower mature at the same time. It is called homogamy. It increases chances for self-pollination. E. g. Mirabilis, Catharanthus.
Cleistogamy: In some plants bisexual flower are formed which never opens throughout the life. Such flowers are called cleistogamous flowers, such as Commelina, . Viola, …

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Dicliny (Unisexuality):- Presence of unisexual flowers confirms cross-pollination. Self-pollination never takes place in these flowers. It means allogamy becomes compulsory. Examples are Palms, Date Palms, Cucumber and Cucurbita, Carica.
Monocliny: Flowers are hermaphrodite (bisexual) and some special devices are present for preventing self-pollination.
Dichogamy: In many bisexual flowers of the plants, stamens and carpels of a flower do not mature at the same…

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Many embryos are formed inside the single seed is called Polyembryony.
It is observed by Leeuwenhoek in Citrus (Orange) seeds in 1719. Polyembryony is commonly found in Gymnosperms but it is also found in some of Angiospermic plants such as Orange, Lemon and Nicotiana etc.
If polyembryony develops naturally then it is called spontaneous polyembryony (self). When it is developed artificially is called induced polyembryony.
When many embryos are formed from separ…

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