when the fern spore falls to the ground, it doesn't begin to grow fronds right away. Instead, the spore grows into a tiny heart - shaped plant called a prothallium. The prothallium does not look like a fern frond at all. If you observe closely, you may find prothallia growing in damp, shady places where there are ferns.
ferns must live in moist areas, because they have vascular tissues. Vascular tissues give support to fern and transport water through out the whole entire body.
Yes and no. Ferns need to live in a moist environment in order for the sperm to be able to swim to the egg and fertilize it.
Because they reproduce by spores; water is an important to the development of germinated spore
They need water to reproduce so the sperm is able to swim and fertilize the egg.
They are very primitive. Gametes are swimming ones
Their sperms are swimming. So water is needed
Meiosis I and Meiosis II
C
Yes, any animal that undergoes sexual repoduction can pass on variation to their offspring, provided that variation is contained in the gametes, or germinative cells.
ones a hore and the others not
Sexual reproduction creates variaty that asexual reproduction cannot provide. If we were all asexual, that means that there are very little variaty(the little part is caused by mutation) and that we would all look alike and be alike. The problem with this is that if a disease spreads in the population that is lethal to one person, then it will be lethal to everyone in that population(unless there was a mutation). Our being able to reproduce sexually has made it easy to not die by a disease that might be lethal to one person.
no
Meiosis I and Meiosis II
Strictly speaking all plants, for without water plants die! However algae, bryophytes (mosses and liverworts) and pteridophytes (ferns) all have motile male gametes which require free water to swim through to the female gamete.
C
The male sex cells,androcytes of bryophytes are motile and require a medium to swim in to reach the female sex organ for fertilisation.Hence water is essential as it becomes the medium for the androcyte to swim.
Well to make babies and the babies grow up to adults and make more babies to become adults and so on. that's how you were born.
Yes, any animal that undergoes sexual repoduction can pass on variation to their offspring, provided that variation is contained in the gametes, or germinative cells.
not the orientation but the behavior
A reproduction, such as a painting, is an attempt to create an exact or near exact copy of the original.
the offspring will have the ability to survive in the environment
ones a hore and the others not
People do get sexually confused because of the environment they live in and the environment surrounding their early childhood.