20. List the characteristics of parasitic helminthes. Describe the sub-phyla and their classes if any. give an example of each.

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step-by-step explanation:

divide 630/30

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both male and female gametes are produced by meiosis of the germ cells. therefore, both male and female gametes are haploid. one male and one female gamete unite during the fertilization to form the diploid zygote. in seed bearing plants, pollen grain is the male gametophyte, which produces sperm cells.

since there are no options posted i'll give you a few examples.

a dolphin's flipper, bird's wing, cat's leg.

answerblank(1) renal fascia; blank(2) fibrous capsule;