General
✓✗The common mode of sexual reproduction in Chlamydomonas is
- isogamous
- anisogamous
- oogamous
- hologamous
General
✓✗Members of Chlorophyceae are commonly called
- green algae
- brown algae
- red algae
- blue-green algae
General
✓✗Zygotic meiosis is characteristic of
- Fucus
- Funaria
- Chlamydomonas
- Marchantia
General
✓✗Which one of the following has haplontic life cycle?
- Wheat
- Funaria
- Polytrichum
- Ustilago
General
✓✗In which of the following is the life cycle haplontic?
- Volvox and Spirogyra
- Fucus and seed plants
- Ferns and mosses
- Ectocarpus and Polysiphonia
General
✓✗A well developed archegonium with neck consisting of 4-6 rows and neck canal cells, characterises
- gymnosperms and flowering plants
- pteridophytes and gymnosperms
- gymnosperms only
- bryophytes and pteridophytes
General
✓✗In mosses, the leafy stage develops from the
- zygote
- gemma cup
- primary protonema directly as a capsule
- secondary protonema as a lateral bud
General
✓✗The zoospores of Ulothrix are
- quadriflagellate
- biflagellate
- uniflagellate
- aflagellate
General
✓✗Aquatic fern which supports the growth of blue green algae, Anabaena, and used to increase the yield of paddy crop is
- Salvinia
- Marsilea
- Isoetes
- Azolla
General
✓✗Chloroplast with many pyrenoids is the feature of
- Chlamydomonas
- Sargassum
- Batrachospermum
- Spirogyra
General
✓✗Fusion of two gametes dissimilar in size, as seen in species of Eudorina, is called
- conjugation
- oogamy
- anisogamy
- isogamy
General
✓✗The female sex organ of bryophytes is
- oogonium
- carpogonium
- antheridium
- flask-shaped archegonium
General
✓✗The plant group that produces spores and embryo but lacks vascular tissues and seeds is
- Pteridophyta
- Rhodophyta
- Bryophyta
- Phaeophyta
General
✓✗In bryophytes, haploid spores are produced by
- mitosis in the gametophyte
- fertilisation
- fragmentation of the protonema
- meiosis in some cells of the sporophyte
General
✓✗Assertion: The micropyle of Pinus ovule contains pollination drop for catching the pollen.
Reason: The ovule of Pinus is unitegmic and orthotropous.
Reason: The ovule of Pinus is unitegmic and orthotropous.
- If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
- If both Assertion and Reason are true, but the Reason is not the correct explanation of the Assertion.
- If Assertion is true, but Reason is false.
- If both Assertion and Reason are false.