Class 12BiologyStrategies for Enhancement in Food ProductionMix Examples- Strategies for Enhancement in Food Production
Easy$Saccharum barberi$ was grown in $A$ India,had $B$ sugar content and yield. $Saccharum officinarum$ did grow in $C$ India,had thicker stem and $D$ sugar content. Here $A$ to $D$ refers to:
- A$A-$North,$B-$poor,$C-$South,$D-$higher
- B$A-$South,$B-$higher,$C-$North,$D-$poor
- C$A-$East,$B-$poor,$C-$West,$D-$higher
- D$A-$West,$B-$higher,$C-$North,$D-$poor
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What is the primary objective of crop rotation?
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View SolutionMatch the organisms in Column $I$ with their economic importance in Column $II$.Column $I$ (Organism) Column $II$ (Economic importance) $i$. $Trachardia$ $lacca$ $a$. Used to produce oils,soaps and isinglass $ii$. $Bombyx$ $mori$ $b$. Helps in pollination of crops $iii$. $Cirrhina$ $mrigala$ $c$. Resin-like substance produced by dermal glands $iv$. $Apis$ $mellifera$ $d$. Best quality of mulberry silk is produced
| Column $I$ (Organism) | Column $II$ (Economic importance) |
| $i$. $Trachardia$ $lacca$ | $a$. Used to produce oils,soaps and isinglass |
| $ii$. $Bombyx$ $mori$ | $b$. Helps in pollination of crops |
| $iii$. $Cirrhina$ $mrigala$ | $c$. Resin-like substance produced by dermal glands |
| $iv$. $Apis$ $mellifera$ | $d$. Best quality of mulberry silk is produced |
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Reason $R$: Offspring with completely different traits not present in the parents can be obtained.
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Reason $R$: Offspring with completely different traits not present in the parents can be obtained.
Which option is correct for Assertion $A$ and Reason $R$?
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$R$ - Reason: $A$ mule is a cross between a male horse and a female donkey.
$R$ - Reason: $A$ mule is a cross between a male horse and a female donkey.
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