All the following differentiate gymnosperms from the higher cryptogams except:
(1) Presence of an independent green gametophyte
(2) development of an ovule
(3) Formation of the pollen tube
(4) Presence of cambium
The life cycle is not haplo-diplontic in:
(1) Bryophytes
(2) Pteridophytes
(3) Polysiphonia
(4) Fucus
The endomembrane system of a eukaryotic cell includes all except:
1. Vacuoles
2. Lysosomes
3. Peroxisomes
4. Golgi complex
Asexaul reproduction by pear shaped biflagellate zoospores is seen in most:
1. | Green algae | 2. | Brown algae |
3. | Red algae |
4. | Both (2) and (3) |
All the following pteriodophytes belong to the Class Pteropsida except:
1. Dryopteris
2. Pteris
3. Selaginella
4. Adiantum
Sexual reproduction by non-flagellated but similar in size gametes is seen in:
1. Chlamydomanas
2. Volvox
3. Spirogyra
4. Fuccus
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 |
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 life cycle pattern shown in the given diagram is not see in:
1. Chlamydomanas
2. Spirogyra
3. Volvox
4. Ectocarpus