Web2 the chemical attraction is species-specific.At least one chemotactic molecule, a 14-amino acid peptide called resact, has been isolated from the sea urchin Arbacia punctulata.Eggs produced by A. punctulata are surrounded by a jelly coat that contains resact, while sperm produced by the same species have receptors on their surface (plasma membrane) that … WebThey do not have specialized reproductive organs for sexual reproduction and do not. 11. if you cut a starfish into two pieces each piece develops into a new starfish what type of a sexual reproduction is this Answer: Asexual Reproduction. Explanation: Asexual reproduction in starfish takes place by fission or through autotomy of arms.
Why do sea urchins have external fertilization? – Quick-Advice.com
WebSpawning. Sea cucumbers reproduce sexually by a process called “spawning”. During this event, several females release their eggs, and several males release their sperm into the water column. It’s usually a … WebDo Sea Urchin reproduce asexually or sexually? The majority of sea urchins reproduce sexually, with male and female organisms releasing their gametes for fertilization. … recommended daily dose vitamin d for women
External and Internal Fertilization Biology for Majors II
WebSea Cucumbers. Sea cucumbers are echinoderms—like starfish and sea urchins. There are some 1,250 known species, and many of these animals are indeed shaped like soft-bodied cucumbers. All sea ... WebAnswer: Sea urchin offspring are not genetically identical. They reproduce sexually. Sea urchins reproduce sexually. Their diploid germ line cells divide by meiosis. The males then have haploid gametes called sperm and the females have haploid gametes called ova. The males eject sperm into the ... WebApr 13, 2024 · Cyclin-dependent kinase 2 (Cdc2) is involved in the metabolic pathways of the cell cycle and plays essential roles in the regulation of cell proliferation in eukaryotic cells.Previous research predicted that Cdc2 is involved in regulating sexual reproduction in male oriental river prawns (Machrobrachium nipponense).In the present study, we … recommended daily fat intake for weight loss