MCQ
Which one of the following is a correct statement?
- AOrigin of seed habit can be traced in pteridophytes.
- BAntheridiophores and archegoniophores are present in pteridophytes.
- CIn gymnosperms female gametophyte is free-living.
- DNone of these.
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| Column $I$ | Column $II$ |
| $a.$ Auxin | $(i)$ Root hair formation |
| $b.$ Cytokinin | $(ii)$ Seed development |
| $c.$ Ethylene | $(iii)$ Xylem differentiation |
| $d.$ $ABA$ | $(iv)$ Nutrient mobilisation |
Statement $I$: Chromosomes become gradually visible under light microscope during leptotene stage.
Statement $II$ : The beginning of diplotene stage is recognized by dissolution of synaptonemal complex.
In the light of the above statements, choose the correct answer from the options given below: