Read the given statements and select the correct option:
A - | Trichoderma is an effective biocontrol agent of several plant pathogens. |
B - | B. thuringiensis is effective against larvae of bollworm. |
1. Both A and B are correct
2. Both A and B are incorrect
3. Only A is correct
4. Only B is correct
Match the items in column "A' and coloum 'B' and choose the correct answer
Column I | Column II |
A. Lady bird | (i) Methano bacterium |
B. Mycorrhiza | (ii) Trichoderma |
C. Biological control | (iii) Aphids |
D. Biogas | (iv) Glomus |
The correct answer is
A | B | C | D | |
(1) | ii | iv | iii | i |
(2) | iii | iv | ii | i |
(3) | iv | i | ii | iii |
(4) | iii | ii | i | iv |
Which of the following is wrongly matched in the given table?
Microbe |
Application |
Application |
|
1 |
Clostridium butylicum |
Lipase |
removal of oil stains |
2 |
Trichoderma polysporum |
Cyclosporin A |
immunosuppressive drug |
3 |
Monascus purpureus |
Statins |
lowering of blood cholesterol |
4 |
Streptococcus |
Streptokinase |
removal of clot from blood vessel |
Column-I | Column-II | ||
1. | Rotenone | (i) | Chrysanthemum cinerarifolium |
2. | Nicotine | (ii) | Derris elliptica |
3. | Azadiractin | (iii) | Azadirachta indica |
4. | Pyrethrum and cinerin |
(iv) | Nicotiana tabacum |
Assertion (A): | While working on Staphylocci, Alexander Fleming observed that Penicillium notatum inhibits the growth of the bacteria. |
Reason (R): | This inhibiting chemical was commercially extracted and its full potential was established by Alexander Fleming. |
1. | Both (A) and (R) are True and (R) is the correct explanation of (A) |
2. | Both (A) and (R) are True and (R) is not the correct explanation of (A) |
3. | (A) is True, (R) is false |
4. | (A) is false, (R) is True |
Assertion (A): | Biofertilizers are preferred over chemical fertilizers. |
Reason (R): | Chemical fertilizers are more hazardous to the environment. |
1. | Both (A) and (R) are True and (R) is the correct explanation of (A) |
2. | Both (A) and (R) are True and (R) is not the correct explanation of (A) |
3. | (A) is True, (R) is False |
4. | (A) is False, (R) is True |
Assertion (A): | Most of the orchid species seedlings cannot proceed with development in the absence of symbiotic fungi. |
Reason (R): | Lichens contain symbiotically associated fungi. |
1. | Both (A) and (R) are true and (R) is the correct explanation of (A) |
2. | Both (A) and (R) are true and (R) is not the correct explanation of (A) |
3. | (A) is true, (R) is false |
4. | (A) is false, (R) is true |