Prepare for NEET with Botany-specific practice questions. Covering all major Botany chapters, this is perfect for your NEET Biology needs.
Which of the following is NOT a function of mitosis?
Growth and development
Repair of tissues
Replacement of damaged cells
Production of gametes
What is the purpose of meiosis?
Growth and repair of tissues
Produce gametes for sexual reproduction
Asexual reproduction
Maintain chromosome number in somatic cells
The process of apomixis bypasses which critical step in sexual reproduction?
Pollination
Meiosis and fertilization
Seed dispersal
Fruit formation
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.
Certain apomictic plants produce seeds without fertilization. How would the genetic makeup of the endosperm in such a plant likely differ from a sexually reproducing angiosperm?
It would be genetically identical to the maternal tissue.
It would be a mixture of maternal and paternal genes.
It would be entirely paternal in origin.
It would be haploid.
A researcher discovers a new angiosperm species where the central cell contains four polar nuclei instead of the usual two. Assuming normal fertilization occurs, what would be the ploidy of the resulting endosperm?
3n
4n
5n
6n
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
Which of the following is a defining characteristic of apomixis?
Seed formation without fertilization
Development of fruit without pollination
Fusion of male and female gametes
Formation of diploid spores
Polyembryony refers to:
The development of multiple seeds in a fruit
The formation of more than one embryo in a seed
The fusion of multiple pollen grains with a single ovule
The development of multiple fruits from a single flower
