Q17 of 56 Page 1

List in tabular form two distinguishing features between acquired traits and inherited traits, with one example of each.



















Acquired Trait



Inherited Trait



1. These are not inherited instead they gets developed in the response of surrounding environment.



These traits are acquired by change in the genes.



2. These traits are not genetical and therefore can not be passed to the future generation.



These can be passed on to the future generation.



Example:


When a beetle starves due to lack of food, it looses its weight. This trait is acquired one.



Example: color variation in a group of beetles.




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If we cross pure-bred tall (dominant) pea plant with pure-bred dwarf (recessive) pea plant we will get pea plants of F1generation. If we now self-cross the pea plant of F1 generation, then we obtain pea plants of F2 generation.

(a) What do the plants of F1 generation look like?


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(c) State the type of plants not found in F1 generation but appeared in F2 generation, mentioning the reason for the same.

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Ethanol is one of the most important industrial chemicals. It is used in medicine, to synthesize many important compounds, it is an excellent solvent.

However, inspite of its benefits it causes many social problems. If a person drinks alcohol regularly, he becomes an alcoholic. Alcohol is non-toxic but it produces physiological effects disturbing brain activity. These persons are also a threat to the lives of others.


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(b) 'Alcohol drinking should not be potrayed on media.' Give valid reasons to justify.


(c) As a student what initiative would you take in the concern of "We should condemn drinking alcohol".