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Question
A few normal seedlings of a chilli plant were kept in a dark room. After a few days they were found to have become whitish or pale yellow coloured. Which of the following terms will you use to describe them?
A few normal seedlings of a chilli plant were kept in a dark room. After a few days they were found to have become whitish or pale yellow coloured. Which of the following terms will you use to describe them?
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Solution
The correct option is C Etiolation
Etiolation is the abnormal form of growth observed when plants grow in darkness or severely reduced light. Such plants characteristically have branched leaves and shoots, excessively long shoots and reduced leaves and root systems. They have a whitish or pale yellow coloured appearance instead of the normal green colouration of plants.
Mutation is a sudden inheritable change in the sequence of the DNA of an organism due to several reasons such as exposure to physical contaminants like ionizing radiation or chemical substances called mutagens. Sometimes infections by different viruses can also cause mutations.
Embolism is the lodging of an embolus. Embolus can be a blocking material like blood clot (thrombus), or cholesterol deposition or an air or gas bubble. Embolus, when lodged inside a blood vessel in such a way that it prevents the flow of blood in the vessel causes embolism.
When the aerial parts of plants are removed prematurely due to various activities like grazing of cattle, mowing of grass, or cutting, it is called defoliation.
Etiolation is the abnormal form of growth observed when plants grow in darkness or severely reduced light. Such plants characteristically have branched leaves and shoots, excessively long shoots and reduced leaves and root systems. They have a whitish or pale yellow coloured appearance instead of the normal green colouration of plants.
Mutation is a sudden inheritable change in the sequence of the DNA of an organism due to several reasons such as exposure to physical contaminants like ionizing radiation or chemical substances called mutagens. Sometimes infections by different viruses can also cause mutations.
Embolism is the lodging of an embolus. Embolus can be a blocking material like blood clot (thrombus), or cholesterol deposition or an air or gas bubble. Embolus, when lodged inside a blood vessel in such a way that it prevents the flow of blood in the vessel causes embolism.
When the aerial parts of plants are removed prematurely due to various activities like grazing of cattle, mowing of grass, or cutting, it is called defoliation.
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