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Biology Test 16...

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  • Question 1
    4 / -1

    Read the features of phylum porifera listed below. How many of these are misleading.

    (a) Mostly asymmetrical

    (b) Calcarious sponges have spongin fibres

    (c) Gemmules are exogenous buds

    (d) Fertilisation is external and development is direct

  • Question 2
    4 / -1

    Bisexual, internal fertilization, Intra-cellular digestion, indirect development, endoskeleton.

    How many of the above features are correct for sponges ?

  • Question 3
    4 / -1

    Which is absent in sponges ?

  • Question 4
    4 / -1

    Which of the following is incorrect for phylum porifera ?

  • Question 5
    4 / -1

    Digestion is both extracellular and intracellular in :-

  • Question 6
    4 / -1

    Consider the following diagram :-

    Choose the correct answer.

  • Question 7
    4 / -1

    Hydra performed locomation by :-

  • Question 8
    4 / -1

    How many animals in the list given below have pseudocoelom :-

    Taenia, Fasciola, Sycon, Ctenoplana, Ascaris, Wuchereria, Ascidia, Branchiostoma, Aplysia.

  • Question 9
    4 / -1

    Osmoregulation and excretion in Platyhelminthes occurs with the help of :

  • Question 10
    4 / -1

    Organ system level of organisation, bilateral symmetry, Pseudocoelom and muscular pharynx is found in :-

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