Both, autogamy and geitonogamy are prevented in

• papaya

• cucumber

• castor

• castor

Even in absence of pollinating agents seed-setting is assured in 

• Commellina

• Zostera

• Salvia

• Salvia

Assisted reproductive technology, IVF involves transfer of 

• ovum into the Fallopian tube 

• zygote into the Fallopian tube 

• zygote into the uterus

• zygote into the uterus

Which one of the following fruits is parthenocarpic?

• Brinjal

• Apple

• Jackfruit

• Jackfruit

An organic substance that can withstand environmental extremes and cannot be degraded by any enzyme is

• cuticle

• sporopollenin

• lignin

• lignin

Geitonogamy involves

• Fertilisation of a flower by the pollen from another flower of the same plant

• Fertilisation of a flower by the pollen from the same flower

• Fertilisation of a flower by the pollen from a flower of another plant in the same population

• Fertilisation of a flower by the pollen from a flower of another plant in the same population

Function of filiform apparatus is to 

• recognise the suitable pollen at the stigma

• stimulate the division of generative cell 

• produce nectar

• produce nectar

Male gametophyte in angiosperms produces

• Two sperms and a vegetative cell

• Single sperm and a vegetative cell

• Single sperm and a two vegetative cells

• Single sperm and a two vegetative cells

Non -albuminous seed is produced in 

• maize

• castor

• wheat

• wheat

Pollen tablets are available in the market for

• In vitro fertilisation

• breeding programmes

• supplementing food 

• supplementing food