The formation of gametophyte, from sporophyte, without spore formation or without meiosis is known as :

• apospory

• apogamy

• parthenogenesis

• none of these

Anemophillous flowers have :

• sessile stigma

• small and smooth stigma

• coloured flower

• large and feathery stigma

263.

Which of the following is ideal for studying meiosis?

• Gamete

• Pollen

• Microsporangium

• Root

To which of the following flower 'synandrous' condition is found?

• Sunflower (Helianthus sp)

• Gourd (Cucurbita sp)

• Pea (Pisum sativum)

• Lemon (Citrus sp)

Study of pollen grain is called

• Ethmology

• Palynology

• Palaeobotany

• $\mathrm{\omega }$-taxonomy

Scientific name of sunflower is

• Hibiscus rosa-sinensis

• Solanum nigrum

• Oryza sativa

• Helianthus annuus

Ornithophily refers to the pollination by which of the following

• insects

• birds

• snails

• air

Exine of pollen grain is made up o

• pectocellulose

• lignocellulose

• sporopollenin

• pollen kit

Seedless banana is

• parthenocarpic fruit

• multiple fruit

• drupe fruit

• true fruit

Ovule integument gets transformed into

• seed

• fruit wall

• seed coat

• cotyledons