Test: Angiosperms (Old NCERT) - NEET MCQ

Correct option is C. 

A haplo-diplontic life cycle involves the alternation between haploid and diploid generations in an organism. In plants, the diploid sporophyte gives rise to the haploid spores through meiosis. The haplo-diplontic life cycle is observed in bryophytes and pteridophytes. Kelp, Polysiphonia are examples. 

Generally, most of the algae are haplontic whereas few others are diplontic. Fucus is one such alagae that exhibits diplontic behavior i.e. Sporophyte is the dominant phase in case of fucus.

Haplodiplontic life cycle is exhibited majorly by plants of Bryophyta and Pteridophyta but some algae like Ectocarpus, Polysiphoina and Kelp also show this type of life cycle. In haplodiplontic life cycle, the dominant phase may vary viz. a dominant haploid gametophyte will have short-lived multicellular sporophyte while a dominant diploid sporophyte will have short-lived gametophyte.
Correct option is D. All of these

Rose plant belongs to the category of Angiosperms. All angiosperms and gymnosperms exhibit diplontic life cycle i.e. Sporophyte is the dominant phase and has independent existence.

Sporophyte is the dominant phase. All spermatophytes exhibit diplontic life cycle. Gametophyte depends on the Sporophyte. Sporophyte has independent existence and can perform photosynthesis and hence can prepare their own food.

Chlamydomanas exhibits haplontic life cycle i.e. gametophyte are the dominant phase in this life cycle. In this life cycle, there is no independent existence for Sporophyte. Spores produced are haploid and divide mitotically to form Gametophyte.

Gametophytes are the dominant phase in this life cycle. Sporophytes don’t have free living existence. Spores are haploid in nature and form gametophyte by mitotic division. Zygote acts as Sporophyte that forms spores.

Angiosperms dominates land at present because it has enclosed seeds, fruits and flowers.

In monocot parallel venation and in dicot reticulate venation is present.