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Regarding Plant life cycle & alternation of generations: Match the following and choose the most appropriate option: (each option on 3 columns can be matched to multiple options on the another 2 columns) eg. A-(iv)-3,5; B-(i); C-(iii)-2; D-(ii),(vi),(vii)-1; (iii),(v)-6;

A. diploid plant body (i) by meiosis 1. gametophyte
B. haploid plant body (ii) by mitosis 2. sporophyte
3. produces haploid spores
4. produces gametes
5. from zygote
6. from haploid spores

( A ) A-2; B-1; A-(i)-3; A-(ii)-5; B-(ii)-4,6
( B ) A-1; B-2; A-(ii)-3,5; B-(i)-4; B-(ii)-6
( C ) A-1; B-2; A-(ii)-3,5; B-(ii)-4; B-(i)-6
( D ) A-2; B-1; A-(ii)-3; A-(i)-5; B-(i)-4,6
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(A) is the right answer.

Plant life cycle and alternation of generations: The haploid plant body produces gametes by mitosis. This plant body represents a gametophyte. Following fertilisation the zygote also divides by mitosis to produce a diploid sporophytic plant body. Haploid spores are produced by this plant body by meiosis. These in turn, divide by mitosis to form a haploid plant body once again. Thus, during the life cycle of any sexually reproducing plant,
answered Apr 2, 2014 by pady_1

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