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

a. Germ pores are areas in pollen wall where intine and sporopollenin are absent

b. The vegetative cell is bigger, has abundant food reserves, and a large irregularly shaped nucleus

c. The fascinating array of patterns and designs are exhibited by exine wall

d. In over 60 percent of angiosperms, pollen grains are shed at 3-celled stage

1. c and d

2. a and d

3. b and d

4. a and c

Most of the aquatic and land plants are pollinated by

1. Insects or wind

2. Water and insects respectively

3. Abiotic factors only

4. Water and wind respectively

Which one of the following statements is not true?

During microsporogenesis

1. Microspore tetrad is developed by meiosis in sporogenous tissue

2. Pollen grains are developed by mitosis in sporogenous tissue

3. Microspore develops into the male gametophyte

4. Male gametes are produced by pollen grain

Mark the mis-matched pair

1. Orchid           -  Tiny seeds

2. Hydrophily    -  Common in dicots

3. Pollen grain   -  25 to 50 $\mathrm{\mu m}$ in diameter

4. Parthenium   -  Pollen allergy 

The stalk by which an ovule is attached to the placenta is called

1. Funicle

2. Hilum

3. Chalaza

4. Micropyle

Choose the correct match with respect to angiosperm

1. Microsporanigum - ovule; Megasporangium - female gametophyte

2. Megasporangium - ovule; Embryo sac - female gametophyte

3. Megasporangium - female gametophyte; Embryo sac - ovule

4. Nucellus - male gametophyte; Megasporangium - ovule

Formation of embryo sac from a single megaspore nuclei is termed as

1. Bishopric development

2. Monosporic development

3. Tetrasporic development

4. Polysporic development

Recognise the diagram and choose the correct option:- 

1. Hibiscus, multicarpellary syncarpous pistil
2. Multicarpellary syncarpous pistil of papaver
3. Multicarpellary apocarpous gynoecium of Michelia
4. Monocarpellary gynoecium