Concept-wise Practice

bacterial growth MCQ Questions for Class 9

bacterial growth se related questions ko ek jagah revise karein. Har question me bilingual content, answer feedback aur explanation available hai.

Practice Questions

1 questions tagged with bacterial growth.

एक विद्यार्थी तापमान का जीवाणु वृद्धि पर प्रभाव जाँचता है लेकिन अलग तापमान समूहों को अलग-अलग समय तक बढ़ने देता है। ऊष्मायन समय किस प्रकार का चर बन गया?

A student tests the effect of temperature on bacterial growth but allows different temperature groups to grow for different durations. What type of variable has incubation time become?

Explanation opens after your attempt
Correct Answer

B. भ्रमकारी चरConfounding variable

Step 1

Concept

Incubation time also affects bacterial growth and varies between groups. Therefore the effect of temperature cannot be isolated.

Step 2

Why this answer is correct

The correct answer is B. भ्रमकारी चर / Confounding variable. Incubation time also affects bacterial growth and varies between groups. Therefore the effect of temperature cannot be isolated.

Step 3

Exam Tip

ऊष्मायन समय भी जीवाणु वृद्धि को प्रभावित करता है और समूहों में बदल रहा है। इसलिए तापमान के प्रभाव को अलग से नहीं पहचाना जा सकता।

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