Q. No.| Column I | Column II | ||
| A. | Family | (i) | Diptera |
| B. | Order | (ii) | Arthropoda |
| C. | Class | (iii) | Muscidae |
| D. | Phylum | (iv) | Insecta |
1. A-(iii) B-(i) C-(iv) D-(ii)
2. A-(iii) B-(ii) C-(iv) D-(i)
3. A-(iv) B-(iii) C-(ii) D-(i)
4. A-(iv) B-(ii) C-(i) D-(iii)
Which, among the following, are the smallest living cells, known without a definite cell wall, pathogenic to plants as well as animals and can survive without oxygen?
| 1. | Pseudomonas | 2. | Mycoplasma |
| 3. | Nostoc | 4. | Bacillus |
Viroids differ from viruses in having;
| 1. | DNA molecules without protein coat |
| 2. | RNA molecules with protein coat |
| 3. | RNA molecules without protein coat |
| 4. | DNA molecules with protein coat |
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.
Match the Column-I with Column-II
|
Column-I |
Column-II |
||
|
(a) |
Saprophyte |
(i) |
Symbiotic association of fungi with plant roots |
|
(b) |
Parasite |
(ii) |
Decomposition of dead organic materials |
|
(c) |
Lichens |
(iii) |
Living on living plants or animals |
|
(d) |
Mycorrhiza |
(iv) |
Symbiotic association of algae and fungi |
Choose the correct answer from the options given below:
| Options: | (a) | (b) | (c) | (d) |
| 1. | (ii) | (iii) | (iv) | (i) |
| 2. | (i) | (ii) | (iii) | (iv) |
| 3. | (iii) | (ii) | (i) | (iv) |
| 4. | (ii) | (i) | (iii) | (iv) |
Conifers are adapted to tolerate extreme environmental conditions because of?
1. broad hardy leaves
2. superficial stomata
3. thick cuticle
4. the presence of vessels
Pinus seeds cannot germinate and establish without fungal association. This is because:
1. its seeds contain inhibitors that prevent germination.
2. its embryo is immature.
3. it has an obligate association with mycorrhizae.
4. it has a very hard seed coat.
Plants which produce characteristic pneumatophores and show vivipary belong to:
1. Halophytes
2. Psammophytes
3. Hydrophytes
4. Mesophytes
Identify the correct features of Mango and Coconut fruits.
| (i) | In both, fruit is a drupe |
| (ii) | Endocarp is edible in both |
| (iii) | Mesocarp in Coconut is fibrous, and in Mango, it is fleshy |
| (iv) | In both, the fruit develops from the monocarpellary ovary |
Select the correct option from below:
1. (i), (iii) and (iv) only
2. (i), (ii) and (iii) only
3. (i) and (iv) only
4. (i) and (ii) only
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