Question

CWS - Saved to this PC ut References Mailings Review View Help Search Subtitle Subtle im 14 - A A A A E... лоньсаа лавьсаба Лавьс. Аавьсас Аав тавьсер Лавьссон APA E 1 Nomad No Spec. Heading 1 Heading 2 Paragraph Phyla Porifera, Cnidaria & Platyhemlinthes Reproductive Structures Other Structures / Adaptations Tom Phylum Porifera Phylum Cnidaria Class Cubozoa Class Hydrozoa Class Scyphozoa Class Anthozoa Phylum Disholmantha o II c 1 - C ASUS VivoBook DIE home 5 6 7 00 9 0 o R T Y U P

Answer 1

1) porifera :- The porifera reproduces both by sexual and asexual method . The porifera are hermaphrodite organism. They can produce both sperm and ovum. Fertilization takes place in the external water environment. The porifera have various adaptations such as a presence of flagella for controlling the water currents and trap foods , adaptation to survive in different sediments and different concentration of water.

2) Cnidaria reproduces both by sexual and asexual method. Asexually by the budding . They have polyp and Medusa stage. Fertilization takes place in the external environment. The skeleton of Cnidaria play an important role in the locomotion in the water. They have nematocytes for killing the prey and tentacles for protection.
3) The class cubozoa reproduces both sexually and asexually . Asexually by the budding. Male have tentacles. Females have bell . Male inserts tentacles into Bell . Fertilization is internal. The cubozoa have a well-developed nervous system that helps the jelly fishes for quick response against a Predator and they have a belly for the expulsion of water.

4) The hydrozoa reproduces true polyp and Medusa stage. Polyp stages is formed by the budding . Medusa stage is formed by the fertilization of gametes in the external environment . The Hydrozoa have stinging capsule for the protection against the Predator. This stinging capsule have toxic chemicals which leads to killing of Predator.

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