Biology
Grade-7
Easy
Question
_________ birds produce striking breeding plumage, which can include distinctive colors or shapes such as lengthy streamers.
- Carotenoids
- Male
- Molting
- Juvenile
- Subadult
Hint:
The animal species which produce sperm for fertilization.
The correct answer is: Male
- Male birds produce distinct features to attract female birds for mating
- Male birds have colorful plumage than females
- Male birds mark using attractive colors indicating an area has been already occupied and is ready for fight
- Artificially colored male birds (through diet) are found to attract females better
- Naturally colored male birds provide food for the females and the chicks better
- Male birds more colorful than females: https://www.scientificamerican.com/article/why-are-male-birds-more-c/
Related Questions to study
Biology
. ___________ is a bird with a rare but not unheard-of plumage variation, such as very light or very black plumage, which is commonly a sign of leucism or melanism.
- Morph
- Hybrid
- Clone
- Mutant
. ___________ is a bird with a rare but not unheard-of plumage variation, such as very light or very black plumage, which is commonly a sign of leucism or melanism.
BiologyGrade-7
- Morph
- Hybrid
- Clone
- Mutant
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The most exotic birds like _________ use these metabolic pathways to change the structure of carotenoids and lead to produce porphyrins.
- Owls
- Pigeons
- Turacins
- Ducks
The most exotic birds like _________ use these metabolic pathways to change the structure of carotenoids and lead to produce porphyrins.
BiologyGrade-7
- Owls
- Pigeons
- Turacins
- Ducks
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__________ plumage is notably prevalent in raptors and gulls, both of which can take up to three years to mature.
- Juvenile
- Natal
- Subadult
- Basic
__________ plumage is notably prevalent in raptors and gulls, both of which can take up to three years to mature.
BiologyGrade-7
- Juvenile
- Natal
- Subadult
- Basic
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_____________ is also known as winter plumage or non-breeding plumage.
- Basic plumage
- Nuptial plumage
- Natal plumage
- Juvenile plumage
_____________ is also known as winter plumage or non-breeding plumage.
BiologyGrade-7
- Basic plumage
- Nuptial plumage
- Natal plumage
- Juvenile plumage
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______________ is a condition in which a bird's head feathers or other patches are removed during a molt or as a result of injury or disease.
- Leucism
- Hybrid
- Baldness
- Albinism
______________ is a condition in which a bird's head feathers or other patches are removed during a molt or as a result of injury or disease.
BiologyGrade-7
- Leucism
- Hybrid
- Baldness
- Albinism
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______________ have less distinct plumage until they reach adulthood.
- Young birds
- Immature birds
- Adult
- Eggs
______________ have less distinct plumage until they reach adulthood.
BiologyGrade-7
- Young birds
- Immature birds
- Adult
- Eggs
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___________is the process of regrowing feathers.
- Mating
- Molting
- Breeding
- None of the above
___________is the process of regrowing feathers.
BiologyGrade-7
- Mating
- Molting
- Breeding
- None of the above
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The color of the natal plumage is usually basic, and they function to ___________ the young one.
- Insulate
- Camouflage
- Insulate and camouflage
- Attract
The color of the natal plumage is usually basic, and they function to ___________ the young one.
BiologyGrade-7
- Insulate
- Camouflage
- Insulate and camouflage
- Attract
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___________ are the same chemicals that give humans their various skin tones and colors.
- Melanin
- Carotenes
- Porphyrins
- Chlorophylls
___________ are the same chemicals that give humans their various skin tones and colors.
BiologyGrade-7
- Melanin
- Carotenes
- Porphyrins
- Chlorophylls
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Embryo development in _______________ animals, on the other hand, occurs within the female member of that species.
- Viviparous
- Wild animals
- Oviparous
- Aquatic animals
Embryo development in _______________ animals, on the other hand, occurs within the female member of that species.
BiologyGrade-7
- Viviparous
- Wild animals
- Oviparous
- Aquatic animals
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Fertilization occurs after gametogenesis and before embryogenesis.
- True
- False
Fertilization occurs after gametogenesis and before embryogenesis.
BiologyGrade-7
- True
- False
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The given image explains external fertilization.

- True
- False
The given image explains external fertilization.

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- True
- False
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Only a single parent is involved in sexual reproduction.
- True
- False
Only a single parent is involved in sexual reproduction.
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- True
- False
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- Across: 3 – Oviparous, 4 – Zygote Down: 1 - Fertilization, 2 – Embryo
- Across: 3 – Embryo, 4 – Fertilization Down: 1 - Oviparous, 2 – Zygote
- Across: 3 – Zygote, 4 – Embryo Down: 1 - Fertilization, 2 – Oviparous
- Across: 3 – Oviparous, 4 – Fertilization Down: 1 - Zygote, 2 – Embryo
BiologyGrade-7
- Across: 3 – Oviparous, 4 – Zygote Down: 1 - Fertilization, 2 – Embryo
- Across: 3 – Embryo, 4 – Fertilization Down: 1 - Oviparous, 2 – Zygote
- Across: 3 – Zygote, 4 – Embryo Down: 1 - Fertilization, 2 – Oviparous
- Across: 3 – Oviparous, 4 – Fertilization Down: 1 - Zygote, 2 – Embryo