Pollen tablets are available in the market for
(1) In vitro fertilisation
(2) breeding programmes
(3) supplementing food
(4) Ex situ conservation
Function of filiform apparatus is to
(1) recognise the suitable pollen at stigma
(2) stimulate division of generative cell
(3) produce nectar
(4) guide the entry of pollen tube
Non-albuminous seed is produced in
(1) maize
(2) castor
(3) wheat
(4) pea
Which one of the following statement is correct?
(1) Hard outer layer of pollen is called intine
(2) Sporogenous tissue is haploid
(3) Endothecium produces the microspores
(4) Tapetum nourishes the developing pollen
An organic substance that can withstand environmental extremes and cannot be degraded by any enzyme is
1. cuticle
2. sporopollenin
3. lignin
4. cellulose
Even in absence of pollinating agents seed-setting is assured in
(1) Commellina
(2) Zostera
(3) Salvia
(4) fig
The coconut water and the edible part of coconut are equivalent to
(1) endosperm
(2) endocarp
(3) mesocarp
(4) embryo
Wind pollination is common in
(1) lilies
(2) grasses
(3) orchids
(4) legumes
Nucellar polyembryony is reported in species of
(1) Gossypium
(2) Triticum
(3) Brassica
(4) Citrus
In which one of the following pollination is autogamous?
(1) Xenogamy
(2) Chasmogamy
(3) Cleistogamy
(4) Geitonogamy