Conifers differ from grasses in the:
1. production of seeds from ovules
2. lack of xylem tracheids
3. absence of pollen tubes
4. formation of endosperm before fertilization
Which one is correct about male and female
gametophyte?
1. In bryophytes and pteridophytes, they have no
independent free-living existence.
2. In bryophytes and angiosperms, they have
free-living existence.
3. In gymnosperms and angiosperms, they have no
independent free-living existence.
4. In bryophytes, pteridophytes and angiosperms,
they have free-living existence
Which one of the following has haplontic life cycle?
1. Funaria
2. Polytrichum
3. Ustilago
4. wheat
Male and female gametophytes are independent and free-living in:
1. Mustard
2. Castor
3. Pinus
4. Sphagnum
In which of the following gametophyte is not independent free-living?
1. | Funaria | 2. | Marchantia |
3. | Pteris | 4. | Pinus |
Life cycles of Ectocarpus and Fucus respectively are:
1. Diplontic, Haplodiplontic
2. Haplodiplontic, Diplontic
3. Haplodiplontic, Haplontic
4. Haplontic, Diplontic
Zygotic meiosis is characteristic of?
1. Fucus
2. Funaria
3. Chlamydomonas
4. Marchantia
Some plant groups exhibit intermediate condition with respect to
life cycle pattern. Which characteristic will not be
exhibited by such kind of plant?
1. Haplodiplontic life cycle pattern.
2. Both phases are multicellular and often free living.
3. They can differ in their dominant phase.
4. Meiosis takes place in the zygote
Mark the incorrect match
1. No embryo formation — Polysiphonia.
2. No reduction division in zygote— Polytrichum.
3. Vascular tissue present—Azolla.
4. Pollen directly lands on ovule—Wolffia.
Which one is correct about male and female gametophyte?
1. | In bryophytes and pteridophytes, they have no independent free-living existence. |
2. | In bryophytes and angiosperms, they have free-living existence. |
3. | In gymnosperms and angiosperms, they have no independent free-living existence. |
4. | In bryophytes, pteridophytes and angiosperms, they have free-living existence. |