MCQ Test

Question 1

Outbreeding devices primarily promote

Self-pollination

Asexual reproduction

Cross-pollination

Vegetative propagation

Question 2

Dichogamy refers to

Presence of male and female flowers on same plant

Maturation of anther and stigma at different times

Spatial separation of sex organs

Genetic incompatibility

Question 3

Protandry is a type of

Herkogamy

Dichogamy

Self-incompatibility

Dioecy

Question 4

In protogyny

Anthers mature before stigma

Stigma matures before anthers

Both mature simultaneously

Flowers are unisexual

Question 5

Example of protandry is

Avocado

Sunflower

Maize

Pea

Question 6

Herkogamy prevents self-pollination by

Temporal separation

Genetic incompatibility

Physical barrier between anther and stigma

Male sterility

Question 7

Which is an example of herkogamy?

Papaya

Salvia

Pea

Maize

Question 8

Self-incompatibility is

Morphological

Physiological

Temporal

Mechanical

Question 9

Self-incompatibility is controlled by

Environmental factors

Hormones

Genes

Pollinators

Question 10

Which condition prevents autogamy completely?

Dichogamy

Herkogamy

Unisexual flowers

Self-compatibility

Question 11

In monoecious plants

Male and female flowers are on different plants

Flowers are bisexual

Male and female flowers are on same plant

Self-pollination is impossible

Question 12

Monoecious plants prevent

Autogamy

Geitonogamy

Xenogamy

Fertilization

Question 13

Example of monoecious plant

Papaya

Date palm

Castor

Mulberry

Question 14

Dioecious plants show

Autogamy

Geitonogamy

Xenogamy only

Self-pollination

Question 15

Example of dioecious plant

Mustard

Pea

Papaya

Sunflower

Question 16

Which outbreeding device is MOST effective?

Dichogamy

Herkogamy

Self-incompatibility

Geitonogamy

Question 17

Geitonogamy is

Genetically cross-pollination

Functionally self-pollination

Always prevented by outbreeding devices

Seen only in dioecious plants

Question 18

Which does NOT promote outbreeding?

Dichogamy

Herkogamy

Self-compatibility

Dioecy

Question 19

Cleistogamous flowers

Promote cross-pollination

Show self-incompatibility

Ensure autogamy

Are unisexual

Question 20

Which plant shows cleistogamy?

Wheat

Viola

Papaya

Salvia

Question 21

Outbreeding increases

Homozygosity

Genetic variability

Inbreeding depression

Uniformity

Question 22

Inbreeding depression is avoided by

Autogamy

Outbreeding

Cleistogamy

Self-compatibility

Question 23

Which device involves time difference?

Herkogamy

Dichogamy

Dioecy

Self-incompatibility

Question 24

Which involves space separation?

Protogyny

Protandry

Herkogamy

Dichogamy

Question 25

Which is NOT an outbreeding device?

Dichogamy

Herkogamy

Cleistogamy

Dioecy

Question 26

Outbreeding devices are adaptations to

Ensure fertilization

Prevent pollen loss

Promote genetic diversity

Attract pollinators

Question 27

Self-incompatibility occurs at

Pollination stage

Fertilization stage

Seed formation

Fruit formation

Question 28

In self-incompatibility, pollen fails to

Germinate

Reach stigma

Form anther

Disperse

Question 29

Which plant shows both chasmogamous and cleistogamous flowers?

Viola

Papaya

Maize

Wheat

Question 30

Chasmogamous flowers

Never open

Promote autogamy only

Can show cross-pollination

Are unisexual

Question 31

Genetic recombination is maximum in

Autogamy

Geitonogamy

Xenogamy

Cleistogamy

Question 32

Which ensures compulsory cross-pollination?

Monoecy

Dioecy

Dichogamy

Herkogamy

Question 33

Geitonogamy is prevented in

Bisexual flowers

Monoecious plants

Dioecious plants

Cleistogamous flowers

Question 34

Outbreeding devices are absent in

Wheat

Papaya

Castor

Sunflower

Question 35

Which flower ensures seed set even in absence of pollinators?

Chasmogamous

Cleistogamous

Unisexual

Dioecious

Question 36

Outbreeding devices evolved to avoid

Pollination

Fertilization

Inbreeding

Seed dispersal

Question 37

In Salvia, pollination mechanism involves

Dichogamy

Herkogamy

Self-incompatibility

Dioecy

Question 38

Which is genetically controlled?

Herkogamy

Dichogamy

Self-incompatibility

Dioecy

Question 39

Autogamy occurs in

Dioecious plants

Cleistogamous flowers

Unisexual flowers

Monoecious plants

Question 40

Outbreeding devices increase

Homozygosity

Inbreeding depression

Hybrid vigor

Genetic purity

Question 41

Which flower type always ensures autogamy?

Chasmogamous

Cleistogamous

Unisexual

Dioecious

Question 42

Example of plant showing protogyny

Sunflower

Avocado

Pea

Wheat

Question 43

Which is NOT temporal separation?

Protandry

Protogyny

Herkogamy

Dichogamy

Question 44

Outbreeding devices are absent in

Cleistogamous flowers

Dioecious plants

Self-incompatible plants

Herkogamous flowers

Question 45

Which is functionally cross-pollination but genetically self-pollination?

Xenogamy

Autogamy

Geitonogamy

Dioecy

Question 46

In maize, pollination is

Autogamous

Xenogamous

Cleistogamous

Self-incompatible

Question 47

Self-incompatibility is absent in

Brassica

Potato

Tobacco

Wheat

Question 48

Which promotes genetic variability the MOST?

Autogamy

Cleistogamy

Xenogamy

Geitonogamy

Question 49

Outbreeding devices prevent

Pollination

Fertilization

Self-fertilization

Seed formation

Question 50

CBSE considers outbreeding devices as adaptations to

Ensure survival

Increase yield

Promote cross-pollination

Attract insects

📘 MCQ Test

Question 1

Outbreeding devices primarily promote

Question 2

Dichogamy refers to

Question 3

Protandry is a type of

Question 4

In protogyny

Question 5

Example of protandry is

Question 6

Herkogamy prevents self-pollination by

Question 7

Which is an example of herkogamy?

Question 8

Self-incompatibility is

Question 9

Self-incompatibility is controlled by

Question 10

Which condition prevents autogamy completely?

Question 11

In monoecious plants

Question 12

Monoecious plants prevent

Question 13

Example of monoecious plant

Question 14

Dioecious plants show

Question 15

Example of dioecious plant

Question 16

Which outbreeding device is MOST effective?

Question 17

Geitonogamy is

Question 18

Which does NOT promote outbreeding?

Question 19

Cleistogamous flowers

Question 20

Which plant shows cleistogamy?

Question 21

Outbreeding increases

Question 22

Inbreeding depression is avoided by

Question 23

Which device involves time difference?

Question 24

Which involves space separation?

Question 25

Which is NOT an outbreeding device?

Question 26

Outbreeding devices are adaptations to

Question 27

Self-incompatibility occurs at

Question 28

In self-incompatibility, pollen fails to

Question 29

Which plant shows both chasmogamous and cleistogamous flowers?

Question 30

Chasmogamous flowers

Question 31

Genetic recombination is maximum in

Question 32

Which ensures compulsory cross-pollination?

Question 33

Geitonogamy is prevented in

Question 34

Outbreeding devices are absent in

Question 35

Which flower ensures seed set even in absence of pollinators?

Question 36

Outbreeding devices evolved to avoid

Question 37

In Salvia, pollination mechanism involves

Question 38

Which is genetically controlled?

Question 39

Autogamy occurs in

Question 40