The correct sequence of plants in a hydrosere is
Oak → Lantana → scirpus→Pistia→Hydrilla→Volvox
Volvox → Hydrilla → Pistia → Scirpus → Lantana → Oak
Pista → Volvox → Scirpus → Hydrilla → Oak → Lantana
Pista → Volvox → Scirpus → Hydrilla → Oak → Lantana
B.
Volvox → Hydrilla → Pistia → Scirpus → Lantana → Oak
The various stages in a hydrosere are well studied in ponds. Pools or lakes. The various stages of hydrosere are:
Phytoplankton stage, eg, some blue-green algae, green algae (volvox), diatoms and bacteria, etc.
Rooted submerged stage, eg Hydrilla Vallisneria, etc.
Floating stage, eg, Nelumbo, Nymphaea, etc. Some free-floating species are pisita, Azolla, Lemna, etc.
Red -swamp stage, eg, species of Cyperaceae and Gramineae.
Forest stage, eg, Tropical rain forests, mixed forests of Almus, Acer, Quercus (oak), tropical deciduous forests.
The scutellum observed in a grain of Wheat or maize is comparable to which part of the seed in other monocotyledons?
Cotyledon
Endosperm
Aleurone layer
Aleurone layer
Which one of the following is a vascular cryptogam?
Equisetum
Ginkgo
Marchantia
Marchantia
Which one of the following is considered important in the development of seed habit?
Dependent sporophyte
Heterospory
Haplontic life cycle
Haplontic life cycle
Examine the figure A, B, C, and D. In which one of the four options, all the items A, B, C and D are correct.
|
A |
B |
C |
D |
|
Chara |
Marchantia |
Fucus |
Pinus |
|
A |
B |
C |
D |
|
Equisetum |
Ginkgo |
Selaginella |
Lycopodium |
|
A |
B |
C |
D |
|
Selaginella |
Equisetum |
Salvinia |
Ginkgo |
|
A |
B |
C |
D |
|
Selaginella |
Equisetum |
Salvinia |
Ginkgo |
