Plant Kingdom NEET Quiz

In Pteridophyte, megaspore is retained for some times in female gametophyte, however the permanent retention

is required for seed formation in Gymnosperms.

Polysiphonia is a genus of red algae, where asexual spores and gametes are non-motile or non-flagellated.

In Pinus, winged pollen grains are present. It is extended outer exine on two lateral sides to form the wings

of pollen. It is the characteristic feature, only in Pinus.

Pollen grains of Mustard, Cycas & Mango are not winged shaped.

Pinus is monoecious plant having both male and female cones on same plant.

Volvox is motile colonial fresh water alga with definite number of vegetative cells.

Ectocarpus has haplodiplontic life cycle and Fucus has diplontic life cycle.

In conifers, the needle like leaves, thick cuticle and sunken stomata help to reduce water loss.

Algin is obtained from brown algae, and carrageenin from red algae.

Mucor has non-motile spore i.e. sporangiospores.

Sphagnum is responsible for peat formation.

Male gametophyte with least number of cells is present in angiosperm e.g., Lilium

Spirogyra shows isogamy with non-flagellated gametes.

Salvinia is heterosporous

Cycas and Adiantum resemble each other in having motile sperms

Origin of seed habit can be traced in pteridophytes.

Evolution of seed habit in pteridophytes

– embryo develops in female gametophyte which is retained on parent sporophyte.

Archegoniophore is present in Marchantia

Gametophyte is not independent and free living.

– Gymnosperms & Angiosperms

Gametophytes of vascular plants – Smaller and have smaller sex organs