The lower end of the embryonal axis in maize has the radicle and root cap enclosed in

1. An extension of scutellum

2. A structure called coleoptile

3. A differentiated sheath

4. A structure called coleorrhiza

Mark the incorrect statement

Male and female plants are not separate in case of

1. Papaya and date-palm

2. Mulberry and papaya

3. Date-palm and mulberry

4. Castor and maize

In Polygonum type of embryo sac, polar nuclei

1. Are haploid

2. Can serve as a precursor of PEN

3. Occur in the large central cell

4. More than one option is correct

Endosperm development precedes embryo development because

1. It is  a product of triple fusiony

2. It provides nutrition to developing embryo

3. It is larger than embryo

4. Its development mostly occurs by free nuclear division in PEN

Viability of seeds

1. Maybe lost within a few months

2. Is 1000 years in Lupinus arcticus

3. Recorded in Phoenix is 10000 years

4. Can be tested by 0.1% solution of TTC

Pollen grains lose viability within 30 minutes of their release in the members of family

1. Rosaceae

2. Solanaceae

3. Poaceae

4. Leguminosae

Endosperm persists in the mature seeds of

1. Pea

2. Groundnut

3. Gram

4. Maize

Functional megaspore in Polygonum divides by free nuclear mitotic divisions and develops into 8 nucleated and 7 celled female gametophytes. The largest cell of this gametophyte is

1. Antipodal cell

2. Central cell

3. Synergid cell

4. Egg cell

Find the incorrect statements with respect to pollen grain in angiosperms plants

1. c and d
2. a and d
3. b and d
4. a and c