Biology miscellaneous
- Leaving agricultural land uncultivated for some years known as
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A land that has undergone plowing and harrowing and has been left unseeded for one or more growing seasons is known as fallow and the process as fallowing.
Correct Option: B
A land that has undergone plowing and harrowing and has been left unseeded for one or more growing seasons is known as fallow and the process as fallowing.
- Which vein brings clean blood from the lungs into the heart ?
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The pulmonary veins are a set of veins that deliver clean oxygenated blood from the lungs to the heart. It brings oxygen-rich blood to the left atrium. Systemic veins deliver deoxygenated blood to the heart.
Correct Option: B
The pulmonary veins are a set of veins that deliver clean oxygenated blood from the lungs to the heart. It brings oxygen-rich blood to the left atrium. Systemic veins deliver deoxygenated blood to the heart.
- If waste materials contaminate the source of drinking water, which of the following diseases will spread ?
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Typhoid is a common worldwide bacterial disease transmitted by the ingestion of food or water contaminated with the feces of an infected person, which contain the bacterium Salmonella enterica subsp. enterica, serovar Typhi.
Correct Option: B
Typhoid is a common worldwide bacterial disease transmitted by the ingestion of food or water contaminated with the feces of an infected person, which contain the bacterium Salmonella enterica subsp. enterica, serovar Typhi.
- Vermicomposting is done by
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Vermicomposting is the process of using worms and micro-organisms to turn kitchen waste into black, earthy-smelling, nutrient-rich humus. Vermicompost is an excellent, nutrient-rich organic fertilizer and soil conditioner.
Correct Option: C
Vermicomposting is the process of using worms and micro-organisms to turn kitchen waste into black, earthy-smelling, nutrient-rich humus. Vermicompost is an excellent, nutrient-rich organic fertilizer and soil conditioner.
- One of the best solutions to get rid of non-biodegradable wastes is
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The best way of getting rid of non-biodegradable waste such as plastic is by recycling them. Burning may release toxic gas into the atmosphere. Burying and dumping will hardly solve anything.
Correct Option: D
The best way of getting rid of non-biodegradable waste such as plastic is by recycling them. Burning may release toxic gas into the atmosphere. Burying and dumping will hardly solve anything.
