Select the wrong statement:
1.
Bacterial cell wall is made up of peptidoglycan
2.
Pili and fimbriae are mainly involved in the motility of bacterial cells
3.
Cyanobacteria lack flagellated cells
4.
Mycoplasma is a wall-less microorganism
A cell organelle containing hydrolytic enzyme is:
1. lysosome
2. microsome
3. ribosome
4. mesosome
During cell growth, DNA synthesis takes place in:
1. S-phase
2. G1-phase
3. G2 -phase
4. M-phase
Which of the following biomolecules is common to respiration-mediated breakdown of fats, carbohydrates and proteins?
| 1. | Glucose-6-phosphate |
| 2. | Fructose 1, 6-bisphosphate |
| 3. | Pyruvic acid |
| 4. | Acetyl Co-A |
A few drops of sap were collected by cutting across a plant stem by a suitable method. The sap was tested chemically. Which one of the following test results indicates that it is phloem sap?
1. Acidic
2. Alkaline
3. Low refractive index
4. The absence of sugar
You are given a tissue with its potential for differentiation in an artificial culture. Which of the following pairs of hormones would you add to the medium to secure shoots as well as roots?
1. IAA and gibberellin
2. Auxin and cytokinin
3. Auxin and abscisic acid
4. Gibberellin & abscisic acid
The process which makes a major difference between C3 and C4 plants is:
| 1. | glycolysis | 2. | Calvin cycle |
| 3. | photorespiration | 4. | respiration |
Which one of the following statements is not correct?
| 1. | Offspring produced by asexual reproduction is called clone |
| 2. | Microscopic motile asexual reproductive structures are called zoospores |
| 3. | In potatoes, bananas, and ginger, the plantlets arise from the internodes present in the modified stem |
| 4. | Water hyacinth growing in standing water drains oxygen from water that leads to the death of fish |
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