While entering in the neck of a fern archegonium, sperm shows

Question

While entering in the neck of a fern archegonium, sperm shows (A) phototaxy (B) chemotaxy (C) thermotaxy (D) cyclosis

Tardigrade Admin · Accepted Answer

In ferns about 32 multiflagellate, spirally coiled sperms are produced in antheridium. These sperms swim towards open archegonia due to the presence of malic acid in the latter, ie, they show chemotaxy.

Q. While entering in the neck of a fern archegonium, sperm shows

phototaxy

chemotaxy

thermotaxy

cyclosis

In ferns about $32$ multiflagellate, spirally coiled sperms are produced in antheridium. These sperms swim towards open archegonia due to the presence of malic acid in the latter, ie, they show chemotaxy.