27th Dec Transport in Plants Quiz 2 – Punjab Meritorious School Preparation Portal

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Elements causing delayed flowering at low concentration are

N, S, P

N, S, Mg

N, S, Mn

N, S, Mo

The element which plays an important role in opening and closing of stomata is

Symptoms of manganese toxicity are

Brown spots surrounded by chlorotic veins

Delayed flowering

Synthesis of middle lamella

White bud

State true (T) false (F) and choose the correct option.

Phosphorus is absorbed by the plants from the soil in the form of phosphate ions.
Cysteine and methionine are sulphur containing amino acids.
Iron is an important constituent of ferredoxin.

A B C

At toxic levels of concentration of mineral element, the dry weight of tissue reduces by about

Half

10%

1.0%

Match the following columns and choose the correct option.

Enzyme Co-factor

a(ii), b(i), c(ii), d(iii)

a(i), b(i), c(ii), d(iii)

a(ii), b(i), c(iii), d(i)

a(i), b(i), c(iii), d(ii)

Which of the following is not an essential element but is required by the higher plants?

Nickel

Boron

Chlorine

Cobalt

How many of the following mineral elements are obtained from soil or crust of the earth?

Magnesium, sulphur, oxygen, phosphorus, carbon, potassium

Choose the correct option w.r.t leg-haemoglobin.

Found in root nodules of grasses

Oxygen scavenger

Provides suitable conditions for activity

Both (2) and (3)

The amount of mineral elements like iron, copper and zinc are required by the plants is

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