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NEET Questions / Botany / Sexual Reproduction in Flowering Plants
A researcher observes a developing seed and notices that the cells of the endosperm are undergoing programmed cell death. This process is MOST likely associated with which stage of seed development?
Early embryogenesis
Histodifferentiation
Maturation
Germination
The process of apomixis bypasses which critical step in sexual reproduction?
Pollination
Meiosis and fertilization
Seed dispersal
Fruit formation
Which of the following is NOT a potential evolutionary advantage of apomixis?
Increased genetic diversity within populations
Faster colonization of new habitats
Maintenance of advantageous genotypes in unstable environments
Reduced reliance on pollinators
In a species exhibiting pseudogamy, the pollen is essential for:
Embryo development
Endosperm development
Seed coat formation
Fruit development
Identify the INCORRECT statement regarding adventive embryony:
It involves the development of embryos from the nucellus or integuments.
It is a type of sporophytic apomixis.
The embryos are genetically identical to the parent plant.
It leads to the formation of multiple embryos within a seed.
A plant species exhibits diplospory. Which of the following statements accurately describes the origin of the embryo sac in this species?
The embryo sac develops directly from the megaspore mother cell without meiosis.
The embryo sac develops from a haploid megaspore after meiosis.
The embryo sac develops from a nucellar cell.
The embryo sac develops from an integumentary cell.
Which combination of reproductive processes would result in the highest degree of genetic uniformity within a plant population?
Apomixis and self-fertilization
Apomixis and cross-fertilization
Sexual reproduction and self-fertilization
Sexual reproduction and cross-fertilization
A unique feature of angiosperm fertilization is the formation of both a zygote and an endosperm nucleus. If a mutation occurred preventing the fusion of one of the male gametes with the polar nuclei, what would be the MOST likely direct consequence?
Endosperm would not develop, impacting seed viability.
The zygote would fail to form, preventing embryo development.
A triploid zygote would form instead of a diploid zygote.
The ovule would develop into a seedless fruit.