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NEET Questions / Botany / Sexual Reproduction in Flowering Plants
A unique feature of angiosperm embryogenesis is the formation of a suspensor. Which statement regarding the suspensor is INCORRECT?
It connects the developing embryo to the maternal tissues.
It provides a conduit for nutrients and growth regulators.
It pushes the embryo into the endosperm.
It undergoes extensive cell divisions to form the embryo proper.
In a rare genetic mutation in a dicot plant, the formation of the hypophysis is inhibited. What would be the MOST likely direct consequence of this mutation?
Failure of endosperm development
Impaired radicle development
Absence of cotyledons
Delayed fruit ripening
Which of the following accurately describes the difference between the development of the nuclear endosperm and the cellular endosperm?
Nuclear endosperm is formed after fertilization, while cellular endosperm is formed before fertilization.
Nuclear endosperm is triploid, while cellular endosperm is diploid.
Nuclear endosperm is found in monocots, while cellular endosperm is found in dicots.
Nuclear endosperm involves free-nuclear divisions before cell wall formation, while cellular endosperm involves cell wall formation after each division.
In some plants, the integuments develop into a hard seed coat. What is the primary function of this hardened structure?
Nutrient storage for the embryo
Facilitation of seed dispersal
Promotion of germination
Protection of the embryo
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
In a hypothetical plant species, the polar nuclei contain 2n chromosomes each, and the male gametes are n. What would be the ploidy of the endosperm and zygote, respectively, after double fertilization?
2n, n
3n, 2n
5n, 2n
n, 2n
Researchers are studying a mutant plant where the pollen tube fails to deliver the male gametes to the embryo sac. Which structure(s) would be ABSENT in the ovule of this mutant plant following pollination?
Zygote only
Endosperm only
Both zygote and endosperm
Neither zygote nor endosperm
The first cell of the new generation in angiosperms is called the:
Embryo
Endosperm
Suspensor
Zygote
What is the product of triple fusion in angiosperms?
Zygote
Embryo
Primary Endosperm Nucleus
Seed