Which of the following involves spores of the same size? heterospory homospory both a and b none of the above

Homospory

Explanation:

The sporophyte of the pteridophytes such as Lycopodium, Phylloglossum, Equisetum and almost all the bryophytes produce morphologically identical spores. The production of identical spores or the spores of same size is called homosporous and the process is called homospory. These identical spores on germination produce gametophytes which reproduce sexually by gametes formation.

humans can cause extinction of a species through overharvesting, pollution, habitat destruction, introduction of invasive species (such as new predators and food competitors), overhunting, and other influences. explosive, unsustainable human population growth is an essential cause of the extinction crisis.

explanation:

i didn't have the answer choices , but i tried my best.

the element that provides strength to the exoskeletons of clams and oysters is phosphorus.

this is so because calcium carbonate is the main component in the shells. calcium carbonate is strengthened by phosphorus.

explanation: