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11th Biology Weekly Test - 3 ( Bio - Botany - Transport in Plants )

MABS Institution

11th Biology Weekly Test - 3 ( Bio - Botany - Transport in Plants )-Aug 2020

Time : 1.00 Hours

Part - A

Multiple Choice Question - Answer All Question

In a fully turgid cell

DPD = 0 atm; OP = 5 atm; TP = 10 atm
DPD = 0 atm; OP = 10 atm; TP = 10 atm
DPD = 0 atm; OP = 5 atm; TP = 10 atm
DPD = 20 atm; OP = 20 atm; TP = 10 atm

Munch hypothesis is based on

Translocation of food due to TP gradient and imbibition force
Translocation of food due to TP
Translocation of food due to imbibition force
None of the above

Which one of the following statement is correct regarding stomata, lenticel and hydathode?
i) Opening and closing is not regulated in lenticel and hydathode
ii) Stomata and lenticel allow gaseous exchange
iii) Stomata and hydathode are living cells but lenticel is a dead cell,
iv) Gaseous exchange is not possible in hydathode

i only
ii and iii only
i, iii and iv only
all

1. J C Bose (i) phosphorylase

2. Strasburger (i) Cohesive force

3. Dixon (iii) Crescograph

4. Hanes (iv) Oak tree

1-iii , 2-iv , 3-i, 4-ii
1-iii, 2-iv, 3-ii, 4-i
1-iv, 2-iii,3-ii, 4- i
1-i , 2-iv , 3-ii ,4-iii

Cobalt chloride strips are used to find ___________

Presence of stomata in leaf
Rate of transpiration
Guttation
All the above

Stomata of a plant open due to

Influx of K⁺
Efflux of K⁺
Influx of Cl^-
Influx of OH^-

Embolism during ascent of sap refers

cavitation in phloem
gas bubble replacing the water in xylem
disappearance of gas from xylem
undisturbed water column

Choose the correct statement.
(i) In guard cells starch is converted to malic acid.
(ii) Stomata open in dark and close in light.
(iii) Accumulation of CO₂ in guard cells lowers the pH level.
(iv) CO₂ is a natural antitranspirant

i, ii and iii only
i, ii, iii and iv
none
i, iii and iv

In pure water Osmotic potential is ___________

equal to solute potential
zero
less than solute potential
decreases with increase of solutes

Choose the wrong statement.
i) Hydathodes are pores.
ii) Guttation occurs through the .epithem
iii) They are found in plants growing in shady places.
iv) The water exuded during this process is pure water

i and iii
i,iii, and iv
ii and iii
ii and iv

Starch - sugar Inter conversion theory was proposed by _____________

Lloyd
Sayre
Levit
Hanes

Which of the following physical force is responsible for ascent of sap?

Imbibition
Capillary force
Transpiration pull and cohesion
Root pressure

The electro-osmotic theory explains _____________

ascent of sap
translocation
stomatal movement
water movement

DPD is also called __________

Turgor pressure
Osmotic pressure
Suction pressure
Wall pressure

Which among the following is correct?
i. apoplast is fastest and operate in nonliving part.
ii. The transmembrane route includes vacuole.
iii. symplast interconnect the nearby cell through plasmadesmata.
iv. symplast and transmembrane route are in living part of the cell

i and ii
ii and iii
iii and iv
i, ii, iii, iv

Desalination of water works on the principle of ___________

Plasmolysis
Deplasmolysis
Reverse Osmosis
DPD

In a turgid cell ____________ is seen

TP = WP
TP- WP = Turgid
TP +WP = Turgid
As TP increases WP decreases

________ is a natural antitranspirant.

O₂
CO₂
NO₂
SO₂

The concept of water potential was introduced by ___________

Slatyer
Dixon
Bose
Lundegardh

__________ is not linked to protein - lecithin theory.

phosphatidic acid
ATP4
Choline
Dehydrogenase

Water potential of pure water is __________

0
-2
1
+2

Immersion of dry raisins in water is an example of_____________

Plasmolysis
Osmosis
Deplasmolysis
Suction pressure

According to cytochrome pump theory the anions and cations are transported by,

active absorption
passive absorption
active and passive absorption respectively
passive and active absorption respectively

Process of fumigation works on the principle of ______

Imbibition
Diffusion
Active transport
Passive transport

Experiment with Balsam demonstrates

Translocation of solute
Plasmolysis
Transpiration pull
Ascent of Sap

Over 30 types of aquaporins have been reported in ___________

Rice
Maize
Peas
Soybean

The term root pressure was coined by __________

Stephen Hales
Bose
Stras burger
Boehm

__________ is a large transporter protein found in outer membrane of plastids mitochondria etc.,

Aquaporin
Uniport
Porin
Cellulose

What type of transpiration is possible in the xerophyte Opuntia?

Stomatal
Lenticular
Cuticular
All the above

Identify the wrong statement with reference to Diffusion
i) It is seen in gases and liquids.
ii) It is a active process and hence no energy expenditure is required.
(iii)The rate of diffusion is determined by concentration gradient.
(iv) It is independent of the living system.

ii and iii
i and iv
ii only
i only

The _____________ theory was proposed by J.C.Bose.

Root Pressure
Relay pump
Pulsation
Capillary

Which among the following are common to facilitated diffusion and active transport?

depend on respiratory energy
transport along concentration gradient
involvement of carrier proteins
all the above

_________ observed correlation between respiration and anion absorption.

Lundegardh
Donnan
Bennet
Overton

As much as 450 litres of water is lost by transpiration in ___________

Com
Date palm
Maple
Sun flower

The term DPD was coined by ______

Renner
Munch
Dixon
Meyer

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