Diplontic Life Cycle

Pteridophytes|Haplodiplontic Life Cycle|General Characteristics|Plant Body|Heterospore And Homospores|Psilopsida|Lycopsida|Sphenopsida|Pteropsida|Economic Importance|Diplontic Life Cycle|General Characteristics - Plant Body|Sporophyte - Reproductives Structures|Male And Female gametophyte |Reproduction|Classification|Classification Of Angiosperms

Haplontic Life Cycle

I. In Rhodophyceae, food is stored as mannitol and laminarin II. Ovules of Gymnosperms are not enclosed by ovary wall III. Salvinia is heterosporous IV. In diplontic life cycle, free living gametophyte represents dominant phase Of the above statements :

Which of the following pairs of organisms are correctly matched with their description ? 1. Pteridophytes which are heterosporous : Selaginella , salvinia 2. Gymnosperms with branched stem : Pinus , Cedrus 3. Algae with haplo - diplontic life cycle : Ectocarpus, polysiphonia 4. Bryophytes with protonema stage : polytrichum , sphagnum

Choose the correct option fron following statements I. During embryogenesis, zygate undergoes mitotic cell division. II. In organisms with diplontic life cycle, zygote divides by meiotic cell division. III. The pericarp (fruit wall) develop from integument of ovule, after fertillzation. IV. In brinjal, sepals remained attached to fruit even after fertilization.

What are diplontic and haplontic life cycles?

Match the columns I and II, ad choose the correct combination from the options given. {:("Column I","Column II"),((a)"Haplontic life - cycle","(i) Gymnosperms and Angiosperms"),((b)"Diplontic life - cycle.","(ii) Spirogyra"),((c)"Haplo- diplontic life","(iii) Bryophytes and pteridophytes"):}

Haplontic life cycle is represented by

Haplontic life cycle is absent in :