In an embryo sac, the cells that degenerate after fertilisation are:
1. Synergids and primary endosperm cell
2. Synergids and antipodals
3. Antipodals and primary endosperm cell
4. Egg and antipodals

While planning for an artificial hybridization programme involving dioecious plants, which of the following steps would not be relevant?
1. Bagging of the female flower
2. Dusting of pollen on the stigma
3. Emasculation
4. Collection of pollen

In the embryos of a typical dicot and a grass, true homologous structures are:

The phenomenon observed in some plants wherein parts of the sexual apparatus are used for forming embryos without fertilisation is called

In a flower, if the megaspore mother cell forms megaspores without undergoing meiosis and if one of the megaspores develops into an embryo sac, its nuclei would be:
1. Haploid
2. Diploid
3. A few haploid and a few diploid
4. With varying ploidy

The phenomenon wherein, the ovary develops into a fruit without fertilisation is called:

A diploid female plant is crossed with a tetraploid male. The ploidy of endosperm will be:

In oogamy, fertilization occurs between
1. Small non-motile female gamete and large motile male gamete
2. Large non-motile female gamete and small motile male gamete
3. A large non-motile female gamete and a small non-motile male gamete
4. A large motile female gamete and a small non-motile male gamete

In which pair both the plants can be vegetatively propagated by leaf segments?

In a type of apomixis known as adventive embryony, embryos develop directly from:
1. Nucellus or integument
2. Zygote
3. Synergids of antipodals of embryo sac
4. Accessory embryo sac in the ovule