Match List I (Atmospheric Layers) with List II (Characteristics):

List I (Layer)	List II (Characteristic)
A. Troposphere	I. Reflects radio waves
B. Stratosphere	II. Lapse rate is positive (Temperature decreases with height)
C. Thermosphere	III. Contains the Ozone layer
D. Ionosphere	IV. Temperature increases significantly with height due to solar radiation

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#Question id: 39295

#Plant Biotechnology

Q. Assertion: Chromosome elimination in somatic hybrids is a highly predictable process used for precise gene mapping. 

Reason: Genetic instability is a common limitation in somatic hybrids, particularly in wide interfamilial crosses, often resulting in abnormal or sterile plants.

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#Question id: 39296

#Plant Biotechnology

Q. Which parental combination was used to develop high nicotine content in tobacco?

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#Question id: 39297

#Plant Biotechnology

Q. Which of the following hybrids is associated with low erucic acid content?

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#Question id: 39298

#Plant Biotechnology

Q. Triazine resistance in tobacco can be obtained from:

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#Question id: 39299

#Plant Biotechnology

Q. Hygromycin resistance was introduced in:

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#Question id: 39300

#Plant Biotechnology

Q. Which parental combinations were used to produce CMS (cytoplasmic male sterility)?