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Diversity in Living Organisms Test - 49

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Diversity in Living Organisms Test - 49
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  • Question 1
    1 / -0
    A mammal with social life having different castes is?
    Solution
    • Caste, in biology, a subset of individuals within a colony(society) of social animals are specialized in the function it performs and distinguished by anatomical or morphological differences from other subsets.
    • The Sand puppy is also known as Nakes Mole Rat.
    • It's a burrowing rodent native to East Africa. It belongs to the genus Heterocephalus and family Heterocephalidae.
    • Nakes Mole Rat is a  mammal with social life having different castes.
    • So, the correct answer is 'Nakes Mole Rat'.
  • Question 2
    1 / -0
    A bird which can fly backwards is__________.
    Solution
    A bind which can fly backwards.
    Answer: Humming bird.
    The only bird which can fly forward and backward without relying on wind is humming bird.
    These birds have an unique wing structure and muscles which give them high level of flight control. They produce $$25\%$$ of weight support during upstrike and $$75\%$$ during a down strake with its wings making a figure.
    Eight motions.
    Humming birds stroke their wings forward and backward, pivoting at one hundred and eight degrees($$108^o$$) about theur shoulders to rotate their wings. They generate lift for both toward and backward stroke, with their wings tracing a horizontal figure. Eight with each beat. A minute turst changes the wing angle and direction of flight.
    Figure: Eight motion:
    It is a type of motion in which the wings traces the path in the shape of eight. Even our star sun follows figure eight motion.

  • Question 3
    1 / -0
    Spinal fluid of Latimeria is believed to be______________.
  • Question 4
    1 / -0
    In male elephant, the testes are
    Solution
    Unlike the human, the elephant has its testes intra-abdominal. Recent researches have linked it to the aquatic past. The testes of elephants are completely inside the body, situated close to the kidneys and protected against cold temperatures, for example in cold water.
    So, the answer is 'abdominal'.
  • Question 5
    1 / -0
    The smallest mammal is___________.
    Solution

  • Question 6
    1 / -0
    Coelacanth(Latimeria chalumnae) is hunted for_________.
    Solution
    C. Liver oil
    EXPLANATION: Coelacanth is a rare marine fish. This fish has some unique physical characteristics that few or no other loving species have. Coelacanths retain an oil-filled notochord, a hollow tube that serves as backbone. This fish is hunted for it's liver oil.
  • Question 7
    1 / -0
    Largest fish is?
    Solution
    • The whale shark(Rhincodon typus) is the largest living cartilaginous fish, of the order Orectolobiformes.
    • It can grow to 40 feet long and weigh an average of 20 tons.
    • These sharks are carnivorous, but they aren't likely to take a nibble out of an unwary surfer – they filter plankton through their enormous mouths while swimming at the surface
    • Hence the largest fish is the whale shark.
    • So, the correct answer is 'Whale shark'.
  • Question 8
    1 / -0
    Red sweat is characteristic of.
  • Question 9
    1 / -0
    In Cockroach, the organs sensitive to ground vibrations are _______
    Solution
    C. Anal cerci
    EXPLANATION: Anal cerci are a pair of appendages. It is present at the end of the abdomen, arising from near the 10th segment of the cockroach's body. Anal cerci are important sense organs, which are sensitive to the ground vibration. These are present in both male and female cockroaches.
  • Question 10
    1 / -0
    Coelom is reduced to haemocoelic channels in ________
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