Q. No.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 |
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
Select the mismatch
|
(1) |
Pinus |
Dioecious |
|
(2) |
Cycas |
Dioecious |
|
(3) |
Salvinia |
Heterosporous |
|
(4) |
Equisetum |
Homosporous |
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