The correct sequence of plants in a hydrosere is from Biology N

Subject

Biology

Class

NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

1.

Elbow joint is an example of 

  • pivot joint

  • hinge joint

  • gliding joint

  • gliding joint

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2.

Mannitol is the stored food in of

  • Chara

  • Porphyra

  • Fucus

  • Fucus

1620 Views

3.

The epithelial tissue present on the inner surface of bronchioles and fallopian tubes is 

  • cuboidal

  • glandular

  • ciliated

  • ciliated

769 Views

4.

Which one of the following pairs of food components in humans reaches the stomach totally undigested?

  • Protein and starch

  • Starch and fat

  • Fat and cellulose

  • Fat and cellulose

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5.

Uric acid is the chief nitrogenous component of the excretory products of 

  • man

  • earthworm

  • cockroach

  • cockroach

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6.

Which one onf the following groups of animals is bilaterally symmetrical and triploblastic?

  • Coelenterates (cnidarians)

  • Aschelminthes (roundworms)

  • ctenophores

  • ctenophores

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7.

A change in the amount of yolk and its distribution in the egg will effect

  • formation of a zygote

  • the pattern of cleavage

  • number of blastomeres produced

  • number of blastomeres produced

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8.

Stroma in the chloroplasts of higher plants contains

  • light -independent reaction enzymes

  • Light -dependent reaction enzymes

  • ribosomes

  • ribosomes

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9.

Which one of the following has haplontic life cycle?

  • Funaria

  • Polytrichum

  • fully developed foetus and placenta

  • fully developed foetus and placenta

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10.

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. 

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