11th Standard Syllabus & Materials

11th Standard

Tamilnadu 11th Standard Tamil மொழி கலை -செய்யுள் - ஒவ்வொரு புல்லையும் Important Questions And Answers Study Material - QB365

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Tamilnadu 11th Standard Tamil கேடில் விழுச்செல்வம் - உரைநடை - தமிழகக் கல்வி வரலாறு Important Questions And Answers Study Material - QB365

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11th Standard

Tamilnadu 11th Standard Tamil பீடு பெற நில் - இலக்கணம் - பகுபத உறுப்புகள் Important Questions And Answers Study Material - QB365

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11th Standard

Tamilnadu 11th Standard Tamil பீடு பெற நில் - செய்யுள் - குறுந்தொகை Important Questions And Answers Study Material - QB365 Set B

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11th Standard

Tamilnadu 11th Standard Tamil பீடு பெற நில் - செய்யுள் - குறுந்தொகை Important Questions And Answers Study Material - QB365 Set A

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11th Standard

Tamilnadu 11th Standard Tamil பீடு பெற நில் - செய்யுள் - காவடிச்சிந்து Important Questions And Answers Study Material - QB365 Set B

11th Botany - Transport in Plants Book Back Questions

Published on: 12/09/2019

Botany - Transport in Plants

Download Tamil Nadu 11th Standard Biology question papers, model tests, one-mark questions, important questions, and public exam papers in PDF format. Free study materials and answer keys for TN State Board students.

Questions + Answers key

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QB365 Student Learing Managemnet System

Std: 11th Standard - Biology

chapter: - Model Question paper

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Questions:

Multiple Choice Question

1 x 1 = 1

Munch hypothesis is based on _______.

(a)

Translocation of food due to TP gradient and imbibition force

(b)

Translocation of food due to TP

(c)

Translocation of food due to imbibition force

(d)

None of the above

Generic 3

1 x 3 = 3

How phosphorylase enzyme open the stomata in starch sugar interconversion theory?

Generic 2

2 x 2 = 4

What are the parameters which control water potential?

List out the non-photosynthetic parts of a plant that need a supply of sucrose?

Generic 5

1 x 5 = 5

An artificial cell made of selectively permeable membrane immersed in a beaker (in the figure). Read the values and answer the following questions?

a. Draw an arrow to indicate the direction of water movement
b. Is the solution outside the cell isotonic, hypotonic or hypertonic?
c. Is the cell isotonic, hypotonic or hypertonic?
d. Will the cell become more flaccid, more turgid or stay in original size?
e. With reference to artificial cell state, the process is endosmosis or exosmosis? Give reasons.

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Answers Key:

Multiple Choice Question

1 x 1 = 1

(b)
Translocation of food due to TP

Generic 3

1 x 3 = 3

1. The discovery of enzyme phosphorylase in guard cells by Hanes (1940) greatly supports the starch-sugar interconversion theory.
2. The enzyme phosphorylase hydrolyses starch into sugar and high pH followed by endosmosis and the opening of stomata during light. The vice versa takes place during the night.

Generic 2

2 x 2 = 4

(1) Water potential \(\left(\Psi_{\mathrm{W}}\right)\) can be determined by,
(i) Solute concentration or Solute Potential \(\left(\Psi_{\mathrm{S}}\right)\)
(ii) Pressure potential \(\left(\Psi_{\mathrm{P}}\right)\)
(2) By correlating two factors, water potential is written as,
(3) Water potential = Solute potential + Pressure potential
(4) \(\Psi_{W}=\Psi_{S}+\Psi_{P}\)

Roots, buds, matured stem, flowers and fruits.

Generic 5

1 x 5 = 5

(a)

(b) Hypotonic
(c) Hypertonic
(d) More turgid
(e) Endosmosis, Because the cell is placed in pure water \(\left(\Psi_{\mathrm{W}}=0\right)\) or hypotonic solution. Hence the water enters into the artificial cell kept inside the beaker containing water.