Tricky questions
3 min read

Plant Kingdom

- Learning from one's mistakes is the wisest policy. Go through the section to know the common mistakes and get a hold on the solution to these mistakes.
1
Asexual reproduction in liverworts
Liverworts belong to Bryophyta and reproduce sexually when the spores germinate to form free-living gametophytes. Liverworts can reproduce asexually by fragmentation of thalli or through gemmae cups. These gemmae cups detach from parent plant and develop into new plants.
Gemmae are multicellular green structures for vegetative propagation. These are found inside gemma cups in _________________.
A
Riccia capsule
B
Marchantia thallus
C
Funaria protonema
D
Polytrichum thallus
2
Varying gametophytic and sporophytic generation in haplo-diplontic life cycle
Haplo-diplontic life cycle exhibits multicellular sporophytic and gametophytic generation. It may often be thought that both the phases are equally dominant in this type of life cycle. However in reality they may differ in their dominant phases.
Which among the following statement(s) is correct for haplodiplontic life cycle of plants?
This question has multiple correct options
A
It is exhibited by bryophytes and pteridophytes
B
Both haploid and diploid phases are equally dominant
C
Dominant phases may differ between haploid gametophyte or diploid sporophyte
D
Exhibited by some algae like Ectocarpus, Polysiphonia and Kelp
3
Spores do not always have to carry sexual reproduction
Often it is confused that spores are sexual reproductive structure as they may be thought be a part of sporophytic generation in all plants. However, as it may be observed in algae, various classes reproduce asexually with the help of motile or non-motile spores.
Select the incorrect statement regarding reproduction in Rhodophyceae.
A
Asexual reproduction occurs by non-motile spores.
B
Sexual reproduction occurs by motile gametes.
C
Sexual reproduction is oogamous.
D
Complex post-fertilisation developmental events occur