Filiform apparatus is characteristic feature of

1. generative cell

2. nucellar embryo

3. aleurone cell

4. synergids

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