Question

In Bryophyta, what is the relationship between the sporophyte and gametophyte?

a. the only gametophyte phase is a gamete and the sporophyte is free living

b. the gametophyte and sporophyte are free living and separate

c. the gametophyte is partly or completely dependant upon the sporophyte

d. the only sporophyte phase is a zygote and the gametophyte is free living

e. the sporophyte is partly or completely dependent upon the gametophyte

Answer 1

Solution

Option e. The sporophyte is partly or completely dependent upon the gametophyte

In Bryophyta, the relationship between the sporophyte and gametophyte is that the sporophyte is partly or completely dependent upon the gametophyte

Explanation for wrong options

a. In bryophytes, the only gametophyte phase is not gamete. The bryophyte plant body is mainly represnted by gametophyte. Sporophyte is not free living. Therefore the option 'a' is wrong

b.  The gametophyte and sporophyte are not free living and they depend each other. therefore the option 'b' is wrong

c. Gametophyte do not depend on the sporophyte, instead, sporophyte depend on gametophyte. Therefore the option 'c' is wrong

d. the only sporophyte phase present in bryophyte is not zygote. Spore producing capsule, sporangium, spore mother cells etc also represnt the sporophytic stage and the sporophytes are seen on the gametophyte lant body.  Therefore the option 'd' is wrong