Which of the following are the important floral rewards to the animal pollinators?
(1) Colour and large size of flower
(2) Nectar and pollen grains
(3) Floral fragrance and calcium crystals
(4) Protein pellicle and stigmatic exudates
Placenta and pericarp are both edible portions in
(1) apple
(2) banana
(3) tomato
(4) potato
Geitonogamy involves
(1) Pollination of a flower by the pollen from another flower of the same plant
(2) Pollination of a flower by the pollen from the same flower
(3) Pollination of a flower by the pollen from a flower of another plant in the same population
(4) Pollination of a flower by the pollen from a flower of another plant belonging to a distant population
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