Identify the given figure :
Isogametes of cladophora
Heterogametes of fucus
Heterogametes of human
Isogametes of chara
Medium for transport of gametes in Algae, Bryophytes, Pteridophytes.
The development of gametophyte from the vegetative parts of the sporophyte without the intervention of spores is called
Parthenogenesis is observed in
Identify $X$ and $Y$ in given figure
Which reproductive adaptation is characteristic of most terrestrial vertebrates but not of most aquatic vertebrates?