Which of the following statements is not correct?

(1) Insects that consume pollen or nectar without bringing about pollination are called pollen nectar robbers

(2) Pollen germination and pollen tube growth are regulated by chemical components of pollen interacting with those of the pistil

(3) Some reptiles have also been reported as pollinators in some plant species

(4) Pollen grains of many species can germinate on the stigma of a flower, but only one pollen tube of the same species grows into the style

Concept Questions :-

Pollination & Outbreeding Devices
Post Pollination Events
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Seed formation without fertilisation in flowering plants involves the process of

(1) budding

(2) somatic hybridization

(3) apomixis

(4) sporulation

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Filiform apparatus is characteristic feature of

(1) generative cell

(2) nucellar embryo

(3) aleurone cell

(4) synergids

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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

Concept Questions :-

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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

Concept Questions :-

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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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