Double fertilization is different from single fertilization because of the presence of

1. Syngamy

2. Seed

3. Triple fusion

4. Megaspore and micropore

The micropylar end of Polygonum type of embryosac has the following structural cells, except

1. Definitive nucleus

2. Synergid

3. Egg cell

4. Oosphere

Egg apparatus consists of

1. Central cell + egg cell

2. Synergids + polar nuclei + egg cell

3. Synergids + oosphere

4. Antipodal cells + synergids + egg

What is the most common shape and size of pollen grain in angiosperms plants?

1. Spindle-shaped, 25-50 $\mathrm{\mu m}$

2. Spherical, 2-5 $\mathrm{\mu m}$

3. Spherical, 25-50 $\mathrm{\mu m}$

4. Spindle-shaped, 2-5 $\mathrm{\mu m}$

In flowering plants, endosperm

1. Is pre-fertilizing tissue

2. Development rarely involves free nuclear divisions

3. Development precedes embryo development

4. Is triploid tissue always

What is the possible advantage if hybrids are made into apomicts?

1. Segregation of characters in the hybrid progeny

2. Farmers can keep on using the hybrid seeds to raise new crop in first year only

3. Absence of segregation in the hybrid progeny

4. More than one option is correct 

During the development of typical embryo sac from the functional megaspore

1. The free nuclear division takes places

2. Cytokinesis is present after each karyokinesis

3. Nuclear divisions are followed immediately by cell wall formation

4. Cell walls are laid down after the 4-nucleated stage

In a typical dicotyledonous embryo, the cylindrical portion below the level of cotyledons is _________ that terminates at its lower and in the ____________

1. Epicotyl, plumule

2. Epicotyl, radicle

3. Hypocotyl, radicle

4. Hypocotyl, plumule

Pollination by water is

1. Limited to about 30 families of dicots

2. Very common in  flowering plants

3. More common in monocots than dicots

4. More common abiotic method of pollination

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