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

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Placenta and pericarp are both edible portions in

(1) apple

(2) banana

(3) tomato

(4) potato

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Geitonogamy involves

(1) Fertilisation of a flower by the pollen from another flower of the same plant

(2) Fertilisation of a flower by the pollen from the same flower

(3) Fertilisation of a flower by the pollen from a flower of another plant in the same population

(4) Fertilisation of a flower by the pollen from a flower of another plant belonging to a distant population

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Pollen tablets are available in the market for

(1) In vitro fertilisation

(2) breeding programmes

(3) supplementing food

(4) Ex situ conservation

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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

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Non-albuminous seed is produced in

(1) maize

(2) castor

(3) wheat

(4) pea

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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 

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Product of sexual reproduction generally generates

(1) longer viability of seeds

(2) prolonged dormancy

(3) new genetic combination leading to variation

(4) large biomass

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

(1) cuticle

(2) sporopollenin

(3) lignin

(4) cellulose

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

(1) Commellina

(2) Zostera

(3) Salvia

(4) fig

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