Q. No.Which of the following statements is correct?
1.
Organisms that depend on living plants are called saprophytes.
2.
Some of the organisms can fix atmospheric nitrogen in specialized cells called sheath cells.
3.
The fusion of two cells is called Karyogamy.
4.
Fusion of protoplasms between two motile or non-motile gametes is called plasmogamy.
Which of the following is incorrect about Cyanobacteria?
1. They are photoautotrophs.
2. They lack heterocysts.
3. They often form blooms in polluted water bodies.
4. They have chlorophyll similar to green plants.
Which of the following is a correct statement?
| 1. | Mycoplasma have DNA, Ribosome and cell wall. |
| 2. | Cyanobacteria are a group of autotrophic organisms classified under Kingdom Monera. |
| 3. | Bacteria are exclusively heterotrophic organisms. |
| 4. | Slime moulds are saprophytic organisms classified under Kingdom Monera. |
Identify the fungi which do not belong to the group of other fungi among the following:
| 1. | Sac-fungi | 2. | Puffballs |
| 3. | Mushrooms | 4. | Bracket Fungi |
Match List - I with List - II
| List - I | List - II | ||
| (a) | Puccinia | (i) | Parasitic fungus on mustard |
| (b) | Neurospora | (ii) | Dead substrates |
| (c) | Saprophytes | (iii) | Wheat rust |
| (d) | Albugo | (iv) | Biochemical and Genetic Work |
Choose the correct answer from the option given below :
| (a) | (b) | (c) | (d) | |
| 1. | (iii) | (ii) | (iv) | (i) |
| 2. | (iii) | (iv) | (ii) | (i) |
| 3. | (i) | (ii) | (iii) | (iv) |
| 4. | (iv) | (ii) | (i) | (iii) |
| 1. | Bacterium | 2. | Virus |
| 3. | Viroid | 4. | Prion |
Which of the following is correct about viroids?
1. They have free RNA without protein coat.
2. They have DNA with protein coat.
3. They have free DNA without protein coat.
4. They have RNA with protein coat.
Match the organisms in Column-I with habitats in Column-II.
| Column-I | Column-II | ||
| (a) | Halophiles | (i) | Hot springs |
| (b) | Thermoacidophiles | (ii) | Aquatic environment |
| (c) | Methanogens | (iii) | Guts of ruminants |
| (d) | Cyanobacteria | (iv) | Salty areas |
Select the correct answer from the options given below:
| Options: | (a) | (b) | (c) | (d) |
| 1. | (iv) | (i) | (iii) | (ii) |
| 2. | (i) | (ii) | (iii) | (iv) |
| 3. | (iii) | (iv) | (i) | (i) |
| 4. | (ii) | (iv) | (iii) | (i) |
Which of the following statements is correct?
1. Lichens do not grow in polluted areas.
2. Algal component of lichens is called mycobiont.
3. Fungal component of lichens is called phycobiont.
4. Lichens are not good pollution indicators.
Mad cow disease in cattle is caused by an organism which has:
1. Inert crystalline
2. Abnormally folded protein
3. Free RNA without protein coat
4. Free DNA without protein coat
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