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

1. parthenocarpy           

2. apomixis

3. asexual reproduction

4. sexual reproduction

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 observed in some plants wherein parts of the sexual apparatus is used for forming embryos without fertilization is called

1. parthenocarpy                   

2. apomixis

3. vegetative propagation     

4. sexual reproduction

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

1. Coleorrhiza and coleoptile

2. Coleoptile and scutellum

3. Cotyledons and scutellum

4. Hypocotyle and radicle

While planning for an artificial hybridisation programme involving dioecious plants, which of the following steps would not be relevant?

1. Bagging of female flower

2. Dusting of pollen on stigma

3. Emasculation

4. Collection of pollen

Autogamy can occur in a chasmogamous flower if

1. pollen matures before maturity of ovule

2. ovules mature before maturity of pollen

3. both pollen and ovules mature simultaneously

4. both anther and stigma are of equal lengths

From the statements given below choose the option that is true for a typical female gametophyte.

1. (i) and (iv)             

2. (ii) and (iii)

3. (i) and (ii)                       

4. (ii) and (iv)

Starting from the innermost part, the correct sequence of parts in an ovule is

1. egg, nucellus, embryosac, integument

2. egg, embryosac, nucellus, integument

3. embryosac, nucellus, integument, egg

4. egg, integument, embryo sac, nucellus

From among the sets of terms given below, identify those that are associated with the gynoecium :

1. Stigma, ovule, embryo sac, placenta

2. Thalamus, pistil, style, ovule

3. Ovule, ovary, embryo sac, tapetum

4. Ovule, stamen, ovary, embryo sac

During microsporogenesis, meiosis occurs in

1. endothecium

2. microspore mother cells

3. microspore tetrads

4. pollen grains