NEET 2016
- Exam
- NEET
- Year
- 2016
- Subject
- Botany
- Chapter
- Sexual Reproduction in Flowering Plants
NEET 2016 · Botany · Sexual Reproduction in Flowering Plants
In the majority of angiosperms:
In the majority of angiosperms:
Options
- AEgg has a filiform apparatus
- BThere are numerous antipodal cells
- CReduction division occurs in the megaspore
- DA small central cell is present in the embryo sac
Correct answer
C. Reduction division occurs in the megaspore
Step-by-step solution
MEGASPOROGENESIS:
Definition: The process of formation of megaspores from megaspore mother cell (MMC) is called megasporogenesis.
i) Embryosac generally develop from a single megaspore that differentiate from a single megaspore mother cell (MMC) in the micropylar region of the nucellus.
ii) MMC is a large cell containing dense cytoplasm and a prominent nucleus.
iii) The MMC undergoes meiosis and forms a linear tetrad of four haploid megaspores. Out of which one remains functional (chalazal end) and three degenerate (micropylar end).
Definition: The process of formation of megaspores from megaspore mother cell (MMC) is called megasporogenesis.
i) Embryosac generally develop from a single megaspore that differentiate from a single megaspore mother cell (MMC) in the micropylar region of the nucellus.
ii) MMC is a large cell containing dense cytoplasm and a prominent nucleus.
iii) The MMC undergoes meiosis and forms a linear tetrad of four haploid megaspores. Out of which one remains functional (chalazal end) and three degenerate (micropylar end).