Free Mineral Nutrition (Weekly Quiz: 2) NEET Biology Questions & Answers with Detailed Explanation & Full Review

Question-1

Which of the following statements are correct ?

1. Solution culture/Hydroponics contains all essential minerals except one, the usefulness of which is to be determined.
2. Na, Si, Co and Selenium are beneficial element required by higher plants.
3. Zn is the activator of nitrogenases while Mo is the activator of alcohol dehydrogenase.
4. Zn is needed for auxin synthesis.

(a) (1), (2) and (3)

(b) (1), (2) and (4)

(c) All of these

(d) None of these

Question-2

Which of the following elements is responsible for maintaining turgor in cells?

(a) Sodium

(b) Potassium

(c) Magnesium

(d) Calcium

Question-3

Deficiency symptoms of nitrogen and potassium are visible first in

(a) Young leaves

(b) Senescent leaves

(c) Roots

(d) Buds

Question-4

Which of the following group contains sulphur in all members?

(a) Biotin, coenzyme A, methionine

(b) Thiamine, ferredoxin, aspartic acid

(c) Methionine, proline, leucine

(d) DNA and RNA

Question-5

Which of the following bacteria reduce nitrate in soil into nitrogen?

(a) Nitrococcus

(b) Thiobacillus

(c) Nitrobacter

(d) Nitrosomonas

Question-6

A trace element essential for plant growth and radio-isotope, which is used in cancer therapy is

(a) calcium

(b) sodium

(c) cobalt

(d) iron

Question-7

The core metal of chlorophyll is

(a) magnesium

(b) nickel

(c) iron

(d) copper

Question-8

Which of the following essential element is required for photochemical reaction involved in photolysis of water?

(a) $Cl^{–}$

(b) $Cu^{2+}$

(c) $Zn^{2+}$

(d) $Mg^{2+}$

Question-9

Fertilizer contains

(a) Macronutrient

(b) Micronutrient

(c) Both (a) and (b)

(d) None of these

Question-10

The first stable product of fixation of atmospheric nitrogen in leguminous plants is

(a) Ammonia

(b) $NO^{–}_2$

(c) $NO^{–}_3$

(d) Glutamate