⏱ Time Remaining:
30:00
📘 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
📊 Result Summary
Total Questions:
✅ Correct:
❌ Incorrect:
⚪ Not Attempted:
Submit