Consider the following two statements:

I:	The spread of living pteridophytes is restricted to narrow geographical regions
II:	They are the first terrestrial plants to possess vascular tissues

1. Both I and II are correct and II explains I
2. Both I and II are correct but II does not explain I
3. I is true but II is false
4. I is false but II is true

Which of the following regarding Cycas is incorrect?
1. Pinnate leaves persist for a few years
2. Male and female cones are born on different plants
3. Coralloid roots are in association with cynobacteria
4. Homosporous gymnosperm

Consider the following two statements:

1. Both I and II are correct and II explains I
2. Both I and II are correct but II does not explain I
3. I is true but II is false
4. I is false but II is true

Which of the following does not belong to the class Pteropsida?

In gymnosperms, the ovules are:

The giant redwood tree, Sequoia, belongs to:

Coralloid roots in Cycas are associated with nitrogen fixing:

Which of the following is not a green alga?

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