Zinc

Which of the following is an incorrect match of essential element and function? (a) Manganese - Structural component of chlorophyll. (b) Calcium - Component of the middle lamella. (c) Zinc - Enzyme activator. (d) Iron - Component of ferredoxin

Ruhul Amin Alig

Manganese

Manganese: Case study from NCERT for NEET

Ruhul Amin Alig

Manganese

Which of the following statements are correct? (i) Magnesium competes with iron and manganese for uptake and with iron for binding with enzymes. (ii) Magnesium inhibit calcium translocation in shoot apex. (iii) Excess of manganese may induce deficiencies of iron, magnesium and calcium. (iv) Symptoms of manganese toxicity may actually be the deficiency symptoms of iron, magnesium and calcium.

Ruhul Amin Alig

Class 12 | Biology | chapter 11 | Biotechnology: Principles and Processes

Calcium : Case study from NCERT for NEET

Ruhul Amin Alig

Class 11 | Biology | Chapter 15 | Plant Growth and Development

The hormone which controls xylem differentiation and helps to prevent fruit and leaf drop at early stages, but promotes abscission of older mature leaves and fruits is 1. Gibberellin 2. Ethylene 3. Cytokinin 4. Auxin

Ruhul Amin Alig

Class 11 | Biology | Chapter 12 | MIneral Nutrition

Which one of the following organisms may respire in the absence of oxygen ? (a) Azotobacter (b) Clostridium (c) Rhizobium (d) Lactobacillus

Ruhul Amin Alig

Class 11 | Biology | Chapter 15 | Plant Growth and Development

The naturally produced auxin is (1) NAA (2) 2,4-D (3) Zeatin (4) IAA

Ruhul Amin Alig

MIneral Nutrition | MCQs | NEET

Mineral Nutrition | MCQs | NEET (Que 16-31 of 100)

Ruhul Amin Alig

MIneral Nutrition | MCQs | NEET

Mineral Nutrition | MCQs | NEET (Que 1-15 of 100)

Ruhul Amin Alig