Multiple Choice QuestionsA genophore is made up of
a single double stranded DNA
a single stranded DNA
RNA and histones
histones and non- histones
Which of the following is not caused by deficiency of mineral?
Chlorosis
Etiolation
Shortening of internodes
Necrosis
B.
Etiolation
Etiolation is a process in flowering plants when grown in partial or complete absence of light. Symptoms include- pale yellow or white colour due to lack of chlorophyll, long internodes, small and rudimentary leaves, poor development of lignified tissue.
Chlorosis is the yellowing of leaves due to lack of chlorophyll. It occurs due to lack of Manganese (Mn), Zinc (Zn) or Iron (Fe) deficiency.
Shortening of internodes ocuurs in rosette plants such as lettuce. It occurs due to deficinecy of Zinc (Zn).
Necrosis in plants is a disease in which tissues of the plants starts degenerating. It causes leaves, stem and other parts of the plants to darken and wilt. It is caused by the deficiency of Nitrogen (N), Potassium (K), Magnesium (Mg), Sulphur (S), Iron (Fe), Manganese (Mn), Zinc (Zn) and Molybdenum (Mo).
Ginger is an underground stem. It is distinguished from root because
it lacks chlorophyll
it stores food
it has nodes and internodes
it has xylem and vessels
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