Through which cell of the embryo sac, does the pollen tube enter the embryo sac:

1. Persistant synergid

2. Egg cell

3. Central cell

4. Degenerated synergid

In a type of apomixis known as adventive embryony, embryos develop directly from the:

1. Synergids or antipodals in an embryo sac

2. Nucellus or integuments

3. Zygote

4. Accessory embryo sacs in the ovule

Which one of the following represents an ovule, where the embryo sac becomes horseshoe-shaped and the funiculus and micropyle are close to each other:

1. Amphitropous

2. Anatropous

3. Circinotropous

4. Atropous 

Anthesis is a phenomenon that refers to:

1. formation of pollen

2. Development of anther

3. Opening of a flower bud

4. Reception of pollen by stigma

An ovule that becomes curved so that the nucellus and embryo sac lies at right angles to the funicle is:

1. Campylotropous

2. Anatropous

3. Orthotropous

4. Hemitropous

Ornithophilly takes place in:
1.  Yellow flower having nectaries
2.  Scented flower
3.  Flower with charming colour
4.  Modified corolla tube

Which pair is of insectivorous plants:
1.  Drosera and Vallisneria
2.  Utricularia and Hydrilla
3.  Allobandra and Utricularia
4.  Rafflesia and Dionea

Eight-nucleated embryosac is:

1. Only monosporic

2. Only bisporic

3. Only tetra sporic

4. Any of the above

Endosperm is formed during double fertilization by:

1. Two polar nuclei & one male gamete

2. One polar nucleus & one male gamete

3. Ovum and male gamete

4. Two polar nuclei & two male gametes

Hair found in the inflorescences of Zea mays is the modification of: