Red algae (Rhodophyceae) are characterized by the absence of any motile gametes or spores. Chlorophyceae (green algae) reproduce by zoospores with two identical anterior flagella.
Which of gametes are non-motile in nature?
Each sperm cell, or spermatozoon, is small and motile. The spermatozoon has a flagellum, which is a tail-shaped structure that allows the cell to propel and move. In contrast, each egg cell, or ovum, is relatively large and non-motile. During fertilization, a spermatozoon and ovum unite to form a new diploid organism.
Do green algae have motile gametes?
All Gametes Motile in some (not all) Algae
In some green algae, including the unicellular, motile Chlamydomonas reinhardtii, the gametes are motile biflagellate cells all the same size, though of two different mating types.
What are non-motile gametes?
Non motile gametes are produced during sexual reproduction in oogamy process. Oogamy is a form of sexual reproduction. It is a form of anisogamy in which the female gamete is larger than the male gamete and is non-motile.
Is BGA motile?
Cynophyceae (blue green algae) reproduce by simple division/fragmentation or nonmotile spores and do not exhibit any motile phase during the life cycle.
What is motile and non-motile gametes?
motile- that have cilia like structures and can move…… non-motile- do not show any movement.
Is Archegonium present in red algae?
D. Archegonium. Hint: In red algae the female sex organ remains attached to the plant even after formation of zygote and forms a new structure called as a cystocarp or carposporophyte.
Which plants produce non-motile male gametes?
Non-motile sperm is an advanced character in Pinus.
Do not have any motile gametes in their life cycle?
Blue green algae reproduce by simple division/fragmentation or nonmotile spores and do not exhibit any motile phase during the life cycle. Red algae (Rhodophyceae) are characterized by the absence of any motile phase.