Biology
Grade-7
Easy
Question
______________ is a common carotenoid that gives sunflowers their bright yellow color.
- α carotene
- β carotene
- δ carotene
- γ carotene
Hint:
- Beta carotene is responsible for yellow and orange colour of fruits and vegetables or flowers.
The correct answer is: β carotene
Beta carotene
- Beta carotene is the pigment responsible for bright yellow colour of sunflower.
- Beta carotene is the type of coloured pigments which gives yellow and orange colour to plant parts.
- Beta carotene is responsible for bright yellow colour of sunflower.
Related Questions to study
Biology
Identify the pollinator among the following.
- Butterfly, dragonfly and honey bee all the organisms transport pollen grains from anther to stigma by sitting on one flower to another.
Identify the pollinator among the following.
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- Butterfly, dragonfly and honey bee all the organisms transport pollen grains from anther to stigma by sitting on one flower to another.
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Under the favorable conditions of light, temperature and water the ____________ begins.
- Every seed has specific conditions for it's germination.
- Some seeds need low temperature to germinate like wheat while some seeds need high temperature to germinate like cotton.
Under the favorable conditions of light, temperature and water the ____________ begins.
BiologyGrade-7
- Every seed has specific conditions for it's germination.
- Some seeds need low temperature to germinate like wheat while some seeds need high temperature to germinate like cotton.
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Seed germination is slowed, and ___________ development begins when the temperature falls below a moderate level.
- Low temperature can damage seeds and Stop their germination by development of fungus in them .
Seed germination is slowed, and ___________ development begins when the temperature falls below a moderate level.
BiologyGrade-7
- Low temperature can damage seeds and Stop their germination by development of fungus in them .
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______________ aids in seed rupturing and transforms insoluble food into soluble form for transfer to the embryo.
- Water enters in seed cells through imbibition.
- It causes rupturing of seed coat by making it swollen and soft .
______________ aids in seed rupturing and transforms insoluble food into soluble form for transfer to the embryo.
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- Water enters in seed cells through imbibition.
- It causes rupturing of seed coat by making it swollen and soft .
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During ________________, the water and gas-resistant seed coat inhibits water intake and oxygen exchange.
- During seed dormancy seed coat prevents it from the harsh conditions.
- A seed doesn't germinate untill it doesn't get the suitable conditions for germination.
During ________________, the water and gas-resistant seed coat inhibits water intake and oxygen exchange.
BiologyGrade-7
- During seed dormancy seed coat prevents it from the harsh conditions.
- A seed doesn't germinate untill it doesn't get the suitable conditions for germination.
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___________________ is an evolutionary adaptation or a situation in which seeds are unable to germinate even in ideal conditions.
- The phase in which a seed can't germinate is known as seed dormancy.
___________________ is an evolutionary adaptation or a situation in which seeds are unable to germinate even in ideal conditions.
BiologyGrade-7
- The phase in which a seed can't germinate is known as seed dormancy.
Biology
Plant growth regulators are found in some seeds, and they prevent __________.
- Some hormones like abscisic acid and gibberellic acid are present in some seeds which regulates seed germination and plant growth.
Plant growth regulators are found in some seeds, and they prevent __________.
BiologyGrade-7
- Some hormones like abscisic acid and gibberellic acid are present in some seeds which regulates seed germination and plant growth.
Biology
Some seeds do not need light for germination.
- Some seeds don't need light for germination as every seed has it's own suitable conditions to germinate for temprature,light and water.
Some seeds do not need light for germination.
BiologyGrade-7
- Some seeds don't need light for germination as every seed has it's own suitable conditions to germinate for temprature,light and water.
Biology
If there is enough temperature but no water for the seed, then still the seed will be able to germinate
- If there is only one condition is not applicable, the seed will not germinate.
If there is enough temperature but no water for the seed, then still the seed will be able to germinate
BiologyGrade-7
- If there is only one condition is not applicable, the seed will not germinate.
Biology
Germination can sometimes come to a halt when the temperature rises above a certain point.
- A seed can't germinate in harsh conditions.
- A specific range of temperature should be there for seed germination.
Germination can sometimes come to a halt when the temperature rises above a certain point.
BiologyGrade-7
- A seed can't germinate in harsh conditions.
- A specific range of temperature should be there for seed germination.
Biology
Pick the odd one out.
- Plumule makes shoot system.
- Leaves are also a part of shoots.
Pick the odd one out.
BiologyGrade-7
- Plumule makes shoot system.
- Leaves are also a part of shoots.
Biology
Match the following:
- Temperature a. Hydration
- Light b. 25 to 30 ℃
- Oxygen c. Sunshine
- Water d. Aerobic respiration
- Water, oxygen, temperature and light , all the four things are important in germination of seed.
Match the following:
- Temperature a. Hydration
- Light b. 25 to 30 ℃
- Oxygen c. Sunshine
- Water d. Aerobic respiration
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- Water, oxygen, temperature and light , all the four things are important in germination of seed.
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After activation of enzymes in a seed, the metabolic phase begins; this phase I called ___________.
- After imbibition activation of enzymes starts and after the activation lag phase is started.
After activation of enzymes in a seed, the metabolic phase begins; this phase I called ___________.
BiologyGrade-7
- After imbibition activation of enzymes starts and after the activation lag phase is started.
Biology
The seed cell becomes metabolically active, elongates, and divides in the last stage of seed germination, giving rise to the ____________.
- Cells grow , elongate and then decide in last stage of seed germination to give rise seedling.
The seed cell becomes metabolically active, elongates, and divides in the last stage of seed germination, giving rise to the ____________.
BiologyGrade-7
- Cells grow , elongate and then decide in last stage of seed germination to give rise seedling.
Biology
Pick the odd one out.
- Minerals are required for growth of plant but the other three options are necessary elements for seed germination.
Pick the odd one out.
BiologyGrade-7
- Minerals are required for growth of plant but the other three options are necessary elements for seed germination.
