Question

Select the incorrect statement from the following:

• A. Water is essential for maintaining turgidity of cell.
• B. Plant can show proper growth in absence of microelements.
• C. Optimum temperature required for plant growth ranges between \(25-35^{\circ }\text{C}\)
• D. Oxygen is essential for respiration and release of energy.

Hint:

Micronutrients are needed in tiny amounts, but a plant cannot grow properly without them.

Answer 1

The Correct Option is B

Step 1: Understanding the Concept
Plants need water, mineral nutrients, a suitable temperature and oxygen for normal growth.

Step 2: Check each statement
Water keeps cells turgid, which is needed for cell enlargement, so statement A is true. Most plants grow best at about \(25-35^{\circ}\text{C}\), so C is true. Oxygen is needed for aerobic respiration, which releases energy, so D is true.

Step 3: Find the incorrect one
Microelements (Fe, Mn, Cu, Zn, B, Mo, Cl, Ni) are essential even though needed in tiny amounts. Without them plants show deficiency symptoms and abnormal growth, so statement B is false.

Final Answer:
The incorrect statement is that a plant can grow properly without microelements. \[ \boxed{\text{(B) }\text{Plant can show proper growth in absence of microelements.}} \]