Biology
General
Easy
Question
Identify the wrong statements
- The ovule develops into seed
- The ovary develops into fruit
- The triple nucleus develops into endosperm
- Double fertilisation is the fusion of male gamete with egg
The correct answer is: Double fertilisation is the fusion of male gamete with egg
The double fertilisation was discovered by SG Nawaschin (1898) and Guignard in Lilium and Fritilaria. Double fertilisation is restricted only to angiosperms. When pollen tube enters ovule, it strikes one of the synergids and burst open to release the two male gametes, which fuse with two different structures in the same female gametophyte. Thus, double fertilisation can be distinguished as.
(i) Generative Fertilisation Fusion of one male gamete with the egg producing diploid zygote or oospore
(ii) Vegetative Fertilisation Fusion of nucleus of second male gamete with the diploid secondary (fused) nucleus or the triple fusion, i.e., fusion of one male nucleus and two polar nuclei forming endosperm (3)
Related Questions to study
Biology
Which of the following plants produces seeds but not flowers?
Which of the following plants produces seeds but not flowers?
BiologyGeneral
Biology
Meiosis in takes place during
Meiosis in takes place during
BiologyGeneral
Biology
Egg apparatus of angiosperms consist of
Egg apparatus of angiosperms consist of
BiologyGeneral
Biology
belongs to
belongs to
BiologyGeneral
Biology
At the base of seta of capsule of moss, there is a haploid brownish growth called
At the base of seta of capsule of moss, there is a haploid brownish growth called
BiologyGeneral
Biology
Which of the following plant group is considered as first terrestrial plants to possess vascular tissues xylem and phloem?
Which of the following plant group is considered as first terrestrial plants to possess vascular tissues xylem and phloem?
BiologyGeneral
Biology
The positive evidence of aquatic ancestory of bryophytes is indicated by
The positive evidence of aquatic ancestory of bryophytes is indicated by
BiologyGeneral
Biology
In Chlorophyceae, the mode of sexual reproduction is
In Chlorophyceae, the mode of sexual reproduction is
BiologyGeneral
Biology
Holdfast, stipe and frond constitutes the plant body in case of
Holdfast, stipe and frond constitutes the plant body in case of
BiologyGeneral
Biology
Terms artificial, natural and phylogenetic are related to types of
Terms artificial, natural and phylogenetic are related to types of
BiologyGeneral
Biology
Sea weeds are important source of
Sea weeds are important source of
BiologyGeneral
Biology
Artificial system of classification was given by …A… and based on …B…
Fill the blanks with respect to A and B. choose the correct option
Artificial system of classification was given by …A… and based on …B…
Fill the blanks with respect to A and B. choose the correct option
BiologyGeneral
Biology
Which economically important product is obtained from
Which economically important product is obtained from
BiologyGeneral
Biology
Female sex organ in a flower is
Female sex organ in a flower is
BiologyGeneral
Biology
The amphibians of plant kingdom are
The amphibians of plant kingdom are
BiologyGeneral