Addition of more solutes in a given solution will:
1. not affect the water potential at all
2. raise its water potential
3. lower its water potential
4. make its water potential zero
 75%
Level 2: 60%+
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The anatomy of springwood shows some peculiar features. Identify the correct set of statements about springwood.
| (a) | It is also called as the early wood |
| (b) | In spring season cambium produces xylem elements with narrow vessels |
| (c) | It is lighter in colour |
| (d) | The springwood along with autumn wood shows alternate concentric rings forming annual rings |
| (e) | It has lower density |
Choose the correct answer from the options given below:
| 1. | (c), (d) and (e) Only | 2. | (a), (b), (d) and (e) Only |
| 3. | (a), (c), (d) and (e) Only | 4. | (a), (b) and (d) Only |
 78%
Level 2: 60%+
Hints
Under normal physiological conditions in human being every 100 ml of oxygenated blood can deliver _____________ml of O2 to the tissues.
| 1. | 10 ml | 2. | 2 ml |
| 3. | 5 ml | 4. | 4 ml |
Subtopic: Â Respiratory System: Transport of Gases |
 84%
Level 1: 80%+
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Nitrogenous waste is excreted in the form of pellet or paste by:
| 1. | Pavo | 2. | Ornithorhynchus |
| 3. | Salamandra | 4. | Hippocampus |
Subtopic: Â Nitrogenous Excretory Products |
 79%
Level 2: 60%+
Hints
In-situ conservation refers to:
| 1. | Conserve only extinct species |
| 2. | Protect and conserve the whole ecosystem |
| 3. | Conserve only high risk species |
| 4. | Conserve only endangered species |
Subtopic: Â In Situ Conservation of Biodiversity |Â Biodiversity Conservation |
 77%
Level 2: 60%+
Hints
Given below are two statements:
In the light of the above statements, choose the most appropriate answer from the options given below:
| Statement I: | Autoimmune disorder is a condition where body defense mechanism recognized its own cells as foreign bodies |
| Statement II: | Rheumatoid arthritis is a condition where body does not attack self cells |
| 1. | Statement I is incorrect but Statement II is correct |
| 2. | Both Statement I and Statement II are correct |
| 3. | Both Statement I and Statement II are incorrect |
| 4. | Statement I is correct but Statement II is incorrect |
Subtopic: Â Allergies & Autoimmunity |
 80%
Level 1: 80%+
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Natural selection where more individuals acquire specific character value other than the mean character value, leads to :
| 1. | Random change | 2. | Stabilising change |
| 3. | Directional change | 4. | Disruptive change |
Subtopic: Â Natural Selection |
 70%
Level 2: 60%+
Hints
Which of the following is not the function of conducting part of respiratory system?
| 1. | Provides surface for diffusion of O2 and CO2 |
| 2. | It clears inhaled air from foreign particles |
| 3. | Inhaled air is humidified |
| 4. | Temperature of inhaled air is brought to body temperature |
Subtopic: Â Respiratory System: Trachea & Basic Anatomy of Lung |Â Respiratory System: Exchange of Gases |
 84%
Level 1: 80%+
Hints
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).
In the light of the above statements, choose the most appropriate answer from the options given below:
| Assertion (A): | All vertebrates are chordates but all chordates are not vertebrates. |
| Reason (R): | Notochord is replaced by a vertebral column in adult vertebrates. |
| 1. | (A) is False but (R) is True. |
| 2. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 3. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 4. | (A) is True but (R) is False. |
Subtopic: Â Phylum Chordata |
 70%
Level 2: 60%+
Hints
Given below are two statements:
In the light of the above statements, choose the most appropriate answer from the options given below:
| Statement I: | Mycoplasma can pass through less than 1 micron filter size |
| Statement II: | Mycoplasma are bacteria with cell wall |
In the light of the above statements, choose the most appropriate answer from the options given below:
| 1. | Statement I is incorrect but Statement II is correct |
| 2. | Both Statement I and Statement II are correct |
| 3. | Both Statement I and Statement II are incorrect |
| 4. | Statement I is correct but Statement II is incorrect |
Subtopic: Â Prokaryotic Cell Organisation |
 80%
Level 1: 80%+
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