In Pinus,
| I. | The stem is branched |
| II. | Roots have fungal association in the form of mycorrhiza |
| III. | The male and female strobili are borne on different trees |
| 1. | Only I is correct |
| 2. | Only II is correct |
| 3. | Only I and II are correct |
| 4. | I, II and III are correct |
Select the mismatch
|
(1) |
Pinus |
Dioecious |
|
(2) |
Cycas |
Dioecious |
|
(3) |
Salvinia |
Heterosporous |
|
(4) |
Equisetum |
Homosporous |
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 |
Select the correct statement.
1. Salvinia, Ginkgo and Pinus all are gymnosperms
2. Sequoia is one of the tallest trees
3 The leaves of gymnosperms are not well adapted to extremes of climate
4. Gymnosperms are both homosporous and heterosporous
Besides paddy fields, cyanobacteria are also found inside vegetative part of
| 1. | Pinus | 2. | Cycas |
| 3. | Equisetum | 4. | Psilotum |
Cycas and Adiantum resemble each other in having
| 1. | seeds | 2. | motile sperms |
| 3. | cambium | 4. | vessels |
A prokaryotic autotrophic nitrogen fixing symbiont is found in
| 1. | Cycas | 2. | Cicer |
| 3. | Pisum | 4. | Alnus |
Ectophloic Siphonostele is found in
| 1. | Osmunda and Equisetum |
| 2. | Marsilea and Botrychium |
| 3. | Adiantum and Cucurbitaceae |
| 4. | Dicksonia and Maidenhair fern |
In whcih of the following groups are seeds present?
| 1. | Psilophyta | 2. | Ginkgopsida |
| 3. | Lycopodiophyta | 4. | Bryophyta |