Q. No.In gymnosperms, the ovules are:
1.
not enclosed by any ovary wall before and after fertilization
2.
not enclosed by any ovary wall only before fertilization
3.
not enclosed by any ovary wall only after fertilization
4.
enclosed by an ovary wall before and after fertilization
The giant redwood tree, Sequoia, belongs to:
| 1. | Bryophyta | 2. | Pteridophyta |
| 3. | Gymnospermae | 4. | Angiospermae |
Coralloid roots in Cycas are associated with nitrogen fixing:
| 1. | Rhizobium | 2. | Frankia |
| 3. | Azospirillum | 4. | Cyanobacteria |
All the following regarding Pinus are correct except:
1. Obligate association with mycorrhiza
2. Unbranched stems
3. Male and female strobili on the same plant
4. Leaves in fascicles
Identify the incorrect statement regarding gymnosperms in general:
1. They are heterosporous
2. Megaspore mother cell is differentiated from a cell in the nucellus
3. Multicellular female gametophyte is retained on the megasporangium
4. The male gametophyte has a large number of cells
Identify the incorrect statement:
| 1. | As compared to the bryophytes, pteridophytes have sporophyte as the main plant body |
| 2. | Pteridophyte sporophyte has well differentiated true roots, stem and leaves |
| 3. | Selaginella has macrophylls like ferns |
| 4. | In sporophyte of ferns, leaf-like appendages called sporophylls subtend sporangia |
Many traits absent in non vascular plants developed in vascular plants. Which of the following would not be a trait that gives vascular plants an advantage over the non vascular plants?
1. Vascular bundles devoid of lignin
2. Roots in sporophytes
3. Evolution of leaves
4. Evolution of sporophylls
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