Sexual reproduction by non-flagellated but similar in size gametes is seen in:
1. Chlamydomonas
2. Volvox
3. Spirogyra
4. Fucus
In mosses, the sex organs are seen in:
1. Protonema stage
2. Leafy stage
3. Capsule of the sporophyte
4. Seta of the sporophyte
The features seen in the gymnosperm Cycas include:
I. Coralloid roots
II. Unbranched stems
III. Pinnate persistent leaves for a few years
IV. Male cones and megasporophyllys borne on same plant
1. I and II only
2. I and IV only
3. I, II and III only
4. I, II, III, and IV
Both bryophytes and pteridophytes:
1. are vascular cryptogams
2. have a dominant sporophyte
3. reproduce only sexually
4. are haplo-diplontic
The first group of terrestrial plants to get rid of the swimming sperm was the:
(1) Club mosses
(2) Ferns
(3) Gymnosperms
(4) Angiosperms
The life cycle pattern shown in the given diagram is not seen in:
1. Chlamydomanas
2. Spirogyra
3. Volvox
4. Ectocarpus
The given diagram shows :
1. An alga that lacks flagellated cells
2. A liverwort
3. A heterosporous pteridophyte
4. A gymnosperm with non-motile sperms
Identify the statement that most accurately describes the plant shown in the given figure:
1. This the male prothallus of Marchantia; A is antheridiophore and B is Gemma cup
2. This the female prothallus of Marchantia; A is archegoniophore and B is Gemma cup
3. This the male prothallus of Sphagnum; A is antheridiophore and B is Gemma cup
4. This the female prothallus of spahgnum; A is archegoniphore and B is Gemma cup
Which one is a wrong statement?
(1) Archegonia are found in Bryophyta, Pteridophyta and Gymnosperms.
(2) Mucor has biflagellate zoospores.
(3) Haploid endosperm is typical feature of gymnosperm.
(4) Brown algae have chlorophyll-a and c, and fucoxanthin.
Read the following five statements (I to V) and select the option with all correct statements.
I. | Mosses and lichens are the first organisms to colonise a bare rock. |
II. | Selaginella is a homosporous pteridophyte. |
III. | Coralloid roots in Cycas have VAM. |
IV. | main plant body in bryophytes is gametophytic, whereas in pteridophytes it is sporophytic. |
V. | In gymnosperms, male and female gametophytes are present within sporangia located on sporophyte. |
1. I, III and IV
2. II, III and IV
3. I, IV and V
4. II, III and V