When the cell is fully turgid, its from Biology Transport in Pla

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181.

The plant undergoes wilting when

  • xylem is blocked

  • cambium is blocked

  • phloem is blocked

  • some roots are reduced in number


182.

Vascular bundles of roots are

  • conjoint

  • concentric

  • bicollateral

  • radial


183.

Ectophloic siphonostele is found in

  • Osmunda and Equisetum

  • Marsilea and Botrychium

  • Adiantum and Cucurbitaceae

  • Dicksonia and Maiden hair fern


184.

Lenticular transpiration takes place in

  • fruits

  • woody stems

  • leaves

  • all of these


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185.

When the cell is fully turgid, its

  • DPD = OP

  • DPD = zero

  • WP = TP

  • OP = zero


C.

WP = TP

A fully stretched cell wall is exerting a restraining inward force called wall pressure on cell contents. This wall pressure is balanced by an equal but oppositely directed-force called turgor pressure in the cell contents, and when the cell wall can stretch no further, the cell is said to be fully turgid. Hence, when the cell is fully turgid its,

Wall Pressure (WP) = Turgor Pressure (TP).


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 Multiple Choice QuestionsShort Answer Type

186.

What is the difference between pinocytosis and phagocytosis?


 Multiple Choice QuestionsMultiple Choice Questions

187.

Graham's law is correlated with

  • diffusion

  • osmoregulation

  • osmosis

  • absorption


188.

A plant cell becomes turgid due to

  • plasmolysis

  • exosmosis

  • endosmosis

  • electrolysis


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189.

Living. cells placed in isotonic solution (0.9% saline) retain their size and shape. This is based on the concept of

  • osmosis

  • diffusion

  • facilitated diffusion

  • transpiration


190.

In higher plants, continuity of cytoplasm from one cell to its neighbouring cells is established through

  • apoplast

  • chloroplast

  • leucoplast

  • symplast


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