Question

Read the following five statements (i to v) and select the option with all correct statements:

1. Mosses and lichens are the first organisms to colonise a bare rock.
2. Selaginella is a homosporous pteridophyte.
3. Coralloid roots in Cycas have V AM.
4. Main plant body in bryophytes is gametophytic, whereas in pteridophytes it is sporophytic.
5. In gymnosperms, male and female gametophytes are present within sporangia located on sporophyte.

Options

• (ii), (iii) and (iv)

• (i), (iv) and (v)

• (ii), (iii) and (v)

• (i), (iii) and (iv)

Answer 1

(i), (iv) and (v)

Explanation:

(ii) A heterosporous pteridophyte is selaginella.

(iii) N₂-fixing bacteria are connected to Cycas coralloid roots, which are tiny, specialised roots.