Which of these characteristics is NOT associated with the evolution of heterospory in pteridophytes?
Reduction in the number of megaspores
Increased protection of the female gametophyte
Development of endosporic gametophytes
Increased dependence on water for fertilization
Related Questions
Given below are two statements : One labelled as Assertion A and the other labelled as Reason R:
Assertion A : The initial phase of the gametophyte in the moss life cycle is the protonema stage.
Reason R : Protonema arises directly from spores liberated from the capsule.
In the light of the above statements, choose the most appropriate answer from options given below:
Both A and R are true and R is the correct explanation of A
Both A and R are true but R is NOT the correct explanation of A
A is true but R is false
A is false but R is true
What is the immediate product of spore germination in the moss life cycle?
Capsule
Protonema
Sporophyte
Rhizoid
Which structure represents the first stage of the gametophyte generation in the moss life cycle, developing directly from a germinated spore?
Protonema
Capsule
Sporophyte
Gametophore
In the life cycle of mosses, the spore directly develops into a branched, filamentous structure called:
Prothallus
Protonema
Sporangium
Antheridium
