Cleavage Polyembryony: Key Botanical Concept
Cleavage polyembryony is a type of polyembryony where an embryo divides into two or more identical parts, each developing into a complete embryo. This phenomenon leads to the formation of multiple genetically identical embryos from a single zygote.
Occurrence in Plants
This mode of reproduction is observed in various plant species, often contributing to vegetative propagation characteristics even within sexual reproduction pathways.
- Citrus species are well-known for exhibiting cleavage polyembryony. Non-embryonic cells within the ovule (nucellar cells) proliferate and form adventive embryos, in addition to the zygotic embryo.
- Orchids typically reproduce via seeds that require mycorrhizal symbiosis and often show limited endosperm.
- Cucurbits (like cucumbers and melons) usually follow standard sexual reproduction pathways.
- Strawberry develops accessory fruits and its seeds are achenes on the receptacle, not typically associated with significant cleavage polyembryony.
Therefore, cleavage polyembryony is fairly common in Citrus.
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Important Questions from Mixed Topic (CUET PG)
- Who was the founder of Bolshevik Communist party?
- What is the key guide to statecraft in the realist tradition?
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A. Berlin Wall is constructed
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C. Soviet invasion of Czechoslovakia
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A. Politics is rooted in permanent and unchanging human nature which is basically self centred, self-regarding and self-interested
B. Politics is an autonomous sphere of action and cannot therefore be reduced to morals
C. International Politics is an arena of conflicting self-interests
D. The ethics of international relations is situational ethics which is very different from private morality
Choose the correct answer from the options given below:Who among the following political thinkers consider the anarchical self help system to be a compelling factor for States to maximise their relative power positions?
