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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.
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
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
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 of the following is NOT a characteristic of a mature pollen grain?
It has a hard outer exine layer
It contains a generative cell and a vegetative cell
It is always binucleate
It is the male gametophyte
What is the function of the tapetum in the anther?
Protection of the anther
Production of pollen grains
Nourishment of developing pollen grains
Dehiscence of the anther
The role of the endosperm is to:
Protect the embryo
Form the seed coat
Develop into the fruit
Provide nutrition to the developing embryo
