MCQOPTIONS
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MCQOPTIONS
This section includes 5 Mcqs, each offering curated multiple-choice questions to sharpen your CTET knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
A common characteristic feature of plant sieve-tube cells and mammalian erythrocytes is |
| A. | absence of nucleus |
| B. | absence of chloroplast |
| C. | absence of cell wall |
| D. | presence of haemoglobin |
| Answer» B. absence of chloroplast | |
| 2. |
Green plants appear to release oxygen instead of carbon dioxide into the atmosphere during the day time because |
| A. | Green plants do not respire during the night time |
| B. | Green plants respire only during the night time |
| C. | Green plants respire during the day time but are involved in photosynthesis during the night time |
| D. | The rate of photosynthesis is higher than the rate of respiration during the day time |
| Answer» E. | |
| 3. |
The green house effect which is causing an increase in the atmospheric temperature is mainly due to |
| A. | Oxygen |
| B. | Nitrogen |
| C. | carbon dioxide |
| D. | sulphur |
| Answer» D. sulphur | |
| 4. |
Hormone Adrenaline |
| A. | Helps control level of sugar in the blood |
| B. | helps the body to adjust stress level when one is very angry or worried |
| C. | helps control height |
| D. | helps control balance of electrolytes in the body |
| Answer» C. helps control height | |
| 5. |
Adding salt and sugar to food substances helps In preserving them for a longer duration. It is because excess salt and sugar |
| A. | plasmolyse the microbial cells |
| B. | cause rupturing of microbial cells |
| C. | cause change in the shape of microbial cells |
| D. | remove water from food |
| Answer» B. cause rupturing of microbial cells | |