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Please explain the following terms breifly : – (a) Diplospory (b) Adventive embroyony (c ) Apospory

Please explain the following terms breifly : –
 (a) Diplospory
 (b) Adventive embroyony
 (c ) Apospory 
 

Grade:9

2 Answers

Aabid Hussain
askIITians Faculty 571 Points
4 years ago
Hi Jeeva,

Diplospory:A form of *apomixisin which the embryo forms directly from the megaspore mother cell. It is found, for example, in mountain everlastings (Antennaria).

Adventive embroyony:(adventitious embryogenesis) The formation of an embryo in some position other than within an embryo sac. It is a form of *apomixis. Adventive embryos may develop from somatic cells of the nucellus or chalaza (*apospory) and may occur together with a normal zygotic embryo. One seed can contain several embryos, as is often the case in Citrus seeds.

Apospory: The development of the gametophyte from the sporophyte without meiosis and spore production, so that the gametophyte has the same number of chromosomes as the sporophyte.
Aashu Mittal
85 Points
3 years ago
AIPMT 2016 Exam Pattern helps the applicants to understand the outline of the paper well which facilitate to prepare and plan in advance. The pattern specifies the duration of the paper, number of questions, marks allotted per subject, syllabus etc.

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