1. Certain ferns
2. Certain pines
3. Certain monocots
4. Primitive dicots.
Certain ferns
1. Outside and around nuclear membrane
2. Inside and around the nuclear membrane
3. Between the two nuclear membranes
4. None of the above
Between the two nuclear membranes
1. Nucleosome
2. Centrosome
3. Chromosome
4. Endosome
Nucleosome
1. They are protected from direct rays of the sun.
2. Capillary water accumulates on the underside of prothallus between its lower surface and the soil surface. Sex organs projecting in this water can be readily fertilized by the ciliated sperms which are chemotactically attracted by the archegonia.
3. The sex organs are protected from wind.
4. Nutrients manufactured by the green prothallus can readily seep downwards to the sex organs due to the action of gravity.
Capillary water accumulates on the underside of prothallus between its lower surface and the soil surface. Sex organs projecting in this water can be readily fertilized by the ciliated sperms which are chemotactically attracted by the archegonia.
1. H1, H2 A, H2 B, H3
2. H1, H2 A, H2 B, H4
3. H2A, H2B, H3, H1
4. H2A, H2B, H3, H4
H2A, H2B, H3, H4
1. Gametophyte is dominant
2. Sporophyte is dominant
3. Sporophyte is total parasite
4. Gametophyte is total parasite.
Sporophyte is dominant
1. Roots
2. Antheridia
3. Archegonia
4. Both B and C.
Both B and C.
1. Uniflagellate
2. Biflagellate
3. Non-flagellate
4. Multiflagellate.
Biflagellate
1. Stage before thallus
2. Plant body without differentiation of stem, leaves and roots.
3. Reduced gametophyte
4. Reduced sporotophyte.
Reduced gametophyte
1. Stage before thallus
2. Plant body without differentiation of stem, leaves and roots.
3. Reduced gametophyte
4. Reduced sporotophyte.
Reduced gametophyte