Which of the following statements regarding mitochondria is incorrect?
| 1. | Mitochondrial matrix contains single circular DNA molecule and ribosomes. |
| 2. | Outer membrane is permeable to monomers of carbohydrates, fats, and proteins. |
| 3. | Enzymes of electron transport are embedded in the outer membrane. |
| 4. | Inner membrane is convoluted with infoldings. |
The shorter and longer arms of submetacentric chromosome are referred to as:
1. m-arm and n-arm respectively
2. s-arm and l-arm respectively
3. p-arm and q-arm respectively
4. q-arm and p-arm respectively
Purines found both in DNA and RNA are:
| 1. | Cytosine and thymine | 2. | Adenine and thymine |
| 3. | Adenine and guanine | 4. | Guanine and cytosine |
Which of the following methods is the most suitable for the disposal of nuclear waste?
| 1. | Bury the waste within rocks, deep below the earth's surface |
| 2. | Shoot the waste into the space |
| 3. | Bury the waste under the Antarctic ice-cover |
| 4. | Dump the waste within rocks, under deep ocean |
| 1. | Bronchioles and fallopian tubes |
| 2. | Bile duct and bronchioles |
| 3. | Fallopian tubes and pancreatic duct |
| 4. | Eustachian tube and salivary duct |
Variations caused by mutation, as proposed by Hugo de Vries, are:
1. small and directionless
2. random and directional
3. random and directionless
4. small and directional
How does steroid hormone influence the cellular activities?
| 1. | Using aquaporin channels as second messenger |
| 2. | Changing the permeability of the cell membrane |
| 3. | Binding the DNA and forming a gene-hormone complex |
| 4. | Activating cyclic AMP located on the cell membrane |
In Antirrhinum (Snapdragon), a red flower was crossed with a white flower and in F1 generation, pink flowers were obtained. When pink flowers were selfed, the F2 generation showed white, red, and pink flowers. Choose the incorrect statement from the following:
| 1. | Law of Segregation does not apply in this experiment. |
| 2. | This experiment does not follow the Principle of Dominance. |
| 3. | The pink colour in F1 is due to incomplete dominance. |
| 4. | Ratio of F2 is 1/4(red):2/4(pink):1/4(white). |
Placentation, in which ovules develop on the inner wall of the ovary or in peripheral part, is:
1. Free central
2. basal
3. Axile
4. Parietal
Select the correct group of biocontrol agents:
1. Nostoc, Azospirillum, Nucleopolyhedrovirus
2. Bacillus thuringiensis. Tobacco mosaic virus, Aphids
3. Trichoderma, Baculovirus, Bacillus thuringiensis
4. Oscilatoria, Rhizobium, Trichoderma
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