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    Learn English > English lessons & exercises > Seahorses > Stats updated every 4 hours
    To go back to the exercise

    Exercise "Seahorses", created by anonyme (a free exercise to learn English):
    Results of the 1 638 people who have taken this test:
    Average mark: 56 / 100 Share


    Latest member with a 100/100 (perfect mark): ploplo / SWITZERLAND, on Monday 16 September - 14:32:
    "!! Thanks a lot for the exercise !!"


    They got a perfect mark


    Stats (1066 candidates)
    Question 1 passed: 61.4 %
    How did the * get its shape?

    Question 2 passed: 70.5 %
    A new study published in the journal 'Nature Communications' explains how the seahorse's * trunk,

    Question 3 passed: 86.7 %
    bent head and long snout help it to * food.

    Question 4 passed: 49.4 %
    Seahorses evolved from * swimmers like these pipefish.

    Question 5 passed: 58.5 %
    To work out why such a * might become S-shaped,

    Question 6 passed: 67.5 %
    researchers Sam Van Wassenbergh, Gert Roos and Lara Ferry compared the way pipefish feed with the way seahorses capture their *

    Question 7 passed: 54.7 %
    Both pipefish and * feed on small shrimp and larval fishes

    Question 8 passed: 81.1 %
    which they * in a two-stage process called 'pivot feeding'.

    Question 9 passed: 60.8 %
    This slow-motion footage taken by the * shows how they rapidly rotate the head upwards

    Question 10 passed: 61.4 %
    then use suction to draw the * into their mouth.

    Question 11 passed: 55.4 %
    But the * only works over short distances

    Question 12 passed: 57.2 %
    so you have to move your *

    Question 13 passed: 80.7 %
    very close very quickly to make a *.

    Question 14 passed: 39.8 %
    The researchers found that the * unique anatomy

    Question 15 passed: 56.7 %
    increases its *: the distance between the eyes that spy dinner

    Question 16 passed: 58.2 %
    and the * that eats it.

    Question 17 passed: 47.9 %
    This animation shows how its S-shaped body enables the *

    Question 18 passed: 52.9 %
    to reach further forward for its *

    Question 19 passed: 30.8 %
    compared with the * pipefish. It's subtle, but small changes like this drive evolution.

    Question 20 passed: 52.8 %
    In the wild, * tend to hide along the edges of reefs

    Question 21 passed: 50.8 %
    or in * beds and wait for

    Question 22 passed: 49.3 %
    their * to swim by. They often attach themselves

    Question 23 passed: 48.8 %
    to the * for camouflage

    Question 24 passed: 34.7 %
    as they *.

    Question 25 passed: 49 %
    In this case, an increased * is clearly an advantage.

    Question 26 passed: 53.5 %
    Pipefish, on the other hand, generally swim towards their prey so * is less important.

    Question 27 passed: 42.6 %
    That's why, it seems, an S-shaped body evolved alongside a * strategy in seahorses.

    Question 28 passed: 58.1 %
    And that's how the seahorse got its * shape.


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