Which of the following plants produce(s) chasmogamous and cleistogamous flowers?

1. Viola (Commonpansy)                  

2. Oxalis

3. Commelina                                  

4. All of the above

Select the option in which both organisms cannot complete their life cycle without each other

1. Snake – Santalum

2. Ficus – Bats

3. Moth – Yucca

4. Aquilegia – Amorphophallus

Find out the correct option:
(1) Among animals, insects, particularly bees are the dominant biotic pollinating agents

(2) Often flowers of animal- pollinated plants are specially adapted for particular species of animals

(3) In some species floral rewards like edible nectar, pollen grains, shelter for egg laying are given to pollinating animals

(4) All the above are correct

For artificial hybridisation experiment in bisexual flower, which of the sequences is correct?
(1) Bagging → Emasculation → Cross pollination → Rebagging

(2) Emasculation → Bagging → Cross pollination → Rebagging

(3) Cross pollination → Bagging → Emasculation → Rebagging

(4) Self-pollination → Bagging → Emasculation → Rebagging

Advantage of cleistogamy is:

1. More vigorous offspring

2. No dependence of pollinator

3. Vivipary

4. Higher genetic variability

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

Go through the following statements:

The above contrivances favour:

(1) Allogamy                  

(2) Autogamy       

(3) Xenogamy      

(4) Cross pollination

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

In which one of the following, both autogamy and geitonogamy are prevented?

1. Wheat

2. Papaya

3. Castor

4. Maize

Genetically and functionally self-pollination is cent percent ensured with seed formation even in the absence of pollinators by

(1) Bisexuality

(2) Dicliny

(3) Geitonogamy

(4) Cleistogamy