Which of the following is not a method of ex situ conservation?
| 1. | Cryopreservation | 2. | In vitro fertilization |
| 3. | National Parks | 4. | Micropropagation |
Subtopic: Â In Situ Conservation of Biodiversity |
 78%
Level 2: 60%+
Hints
Given below are two statements:
In the light of the above statements, choose the correct answer from the options given below:
| Statement I: | Decomposition is a process in which the detritus is degraded into simpler substances by microbes. |
| Statement II: | Decomposition is faster if the detritus is rich in lignin and chitin. |
| 1. | Statement I is correct 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 Decomposition |
 71%
Level 2: 60%+
Hints
Read the following statements and choose the set of correct statements:
Choose the correct answer from the options given below
| (a) | Euchromatin is loosely packed chromatin |
| (b) | Heterochromatin is transcriptionally active |
| (c) | Histone octomer is wrapped by negatively charged DNA in nucleosome |
| (d) | Histones are rich in lysine and arginine |
| (e) | A typical nucleosome contains 400 bp of DNA helix |
Choose the correct answer from the options given below
| 1. | (a), (c), (e) only | 2. | (b), (d), (e) only |
| 3. | (a), (c), (d) only | 4. | (b), (e) only |
Subtopic: Â DNA Double Helix |
 84%
Level 1: 80%+
Hints
Identify the correct set of statements:
| (a) | The leaflets are modified into pointed hard thorns in Citrus and Bougainvillea |
| (b) | Axillary buds form slender and spirally coiled tendrils in cucumber and pumpkin |
| (c) | Stem is flattened and fleshy in Opuntia and modified to perform the function of leaves |
| (d) | Rhizophora shows vertically upward growing roots that help to get oxygen for respiration |
| (e) | Subaerially growing stems in grasses and strawberry help in vegetative propagation |
Choose the correct answer from the options given below:
| 1. | (a), (b), (d) and (e) only | 2. | (b), (c) only |
| 3. | (a), (d) only | 4. | (b), (c), (d) and (e) only |
Subtopic: Â Modifications of Stem |
 62%
Level 2: 60%+
Hints
Which one of the following produces nitrogen fixing nodules on the roots of Alnus ??
| 1. | Beijernickia | 2. | Rhizobium |
| 3. | Frankia | 4. | Rhodospirillum |
 68%
Level 2: 60%+
Hints
Which one of the following plants shows vexillary aestivation and diadelphous stamens ?
1. Solanum nigrum
2. Colchicum autumnale
3. Pisum sativum
4. Allium cepa
Subtopic: Â Flower & Parts of Flower |
 87%
Level 1: 80%+
Hints
Given below are two statements:
| I: | Cleistogamous flowers are invariably autogamous |
| II: | Cleistogamy is disadvantageous as there is no chance for cross pollination |
In the light of the above statements, choose the correct answer from the options given below:
| 1. | I is incorrect but II is correct |
| 2. | Both I and II are correct |
| 3. | Both I and II are incorrect |
| 4. | I is correct but II is incorrect |
Subtopic: Â Pollination & Outbreeding Devices |
 81%
Level 1: 80%+
Hints
The process of translation of mRNA to proteins begins as soon as:
| 1. | The tRNA is activated and the larger subunit of ribosome encounters mRNA |
| 2. | The small subunit of ribosome encounters mRNA |
| 3. | The larger subunit of ribosome encounters mRNA |
| 4. | Both the subunits join together to bind with mRNA |
Subtopic: Â Translation |
 55%
Level 3: 35%-60%
Hints
The device which can remove particulate matter present in the exhaust from a thermal power plant is :
| 1. | Catalytic Convertor | 2. | STP |
| 3. | Incinerator | 4. | Electrostatic Precipitator |
 79%
Level 2: 60%+
Hints
Subtopic: Â Carbohydrates: Cellulose, Chitin, Inulin & Agar |
 91%
Level 1: 80%+
Hints
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