Which of the following statements BEST explains why double fertilization is advantageous for angiosperms?
It ensures the formation of a triploid endosperm, which is more resistant to pathogens.
It allows for the production of both seeds and fruits, enhancing dispersal.
It synchronizes endosperm development with embryo development, preventing wasted resources if fertilization fails.
It eliminates the need for separate male and female gametophytes.
Related Questions
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
What is the ploidy of the primary endosperm nucleus formed after double fertilization?
Haploid (n)
Diploid (2n)
Triploid (3n)
Tetraploid (4n)
Which one of the following would not lead to formation of clones?
Double fertilization
Apomixis
Vegetative reproduction
Tissue culture
The ploidy level of the endosperm formed after double fertilization is:
Haploid (n)
Diploid (2n)
Triploid (3n)
Tetraploid (4n)
Double fertilization occurs in?
pinus
selaginella
funaria
dalbergia
Double fertilization involves
Fertilization of the egg by two male gametes
Fertilization of the egg in the same embryo sac by two sperms brought by one pollen tube
Fertilization of the egg and the central cell by two sperms brought by different pollen tubes
Fertilization of the egg and the central cell by two sperms brought by the same pollen tube
The total number of nuclei involved in double fertilization in angiosperms are
Two
Three
Four
Five
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
Vegetative fertilization leading to the formation of endosperm refers to
Fusion of male gamete with diploid secondary nucleus
Fusion of female gamete with diploid secondary nucleus
Fusion of two diploid vegetative cells
Fusion of two male gametes
Pick out the wrong statement.
The arithmetic mean is always greater than or equal to the geometric mean for a set of non-negative numbers.
The geometric mean is always greater than the arithmetic mean for a set of positive numbers.
The arithmetic mean, geometric mean, and harmonic mean are equal if all the numbers in the set are identical.
For positive numbers, Arithmetic Mean ≥ Geometric Mean ≥ Harmonic Mean.
