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Structural Organisation in Animals Test - 48

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Structural Organisation in Animals Test - 48
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Weekly Quiz Competition
  • Question 1
    1 / -0
    Body cavity of Cockroach is called haemocoel because
    Solution
    Blood vascular system of cockroach is an open type. Blood vessels are poorly developed and open into space (haemocoel). Visceral organs located in the haemocoel are bathed in blood (haemolymph). The haemolymph is composed of colorless plasma and haemocytes. Hene body cavity of cockroach is called as hemocoel because it contains blood.
    So the correct answer is 'It contains blood'.
  • Question 2
    1 / -0
    Short internal spines occur in alimentary canal of Periplanata
    Solution
    Hindgut is divided into ileum, colon, rectum, and anus. The ileum is the first part of the hindgut and has small narrow lumen having an epithelial lining. The ileum leads to a colon, which is broad and slightly coiled.
    The inner lining of the colon is thrown into irregular folds and is formed by slender epithelial cells having a chitinous covering. The colon con­tinues into a small sac-like rectum. Illeum is short internal spines which occur in the alimentary canal.
    So, the correct answer is 'Illeum'.
  • Question 3
    1 / -0
    Number of simple eyes found in Cockroach is
    Solution
    Simple eyes which are also known as ocellar spots or fenestrae are one pair of round and whitish areas present inner to the antennal sockets . These ocelli are sensitive to light.
    So, the correct answer is 'Two'.
  • Question 4
    1 / -0
    Covering of spermatophore in Cockroach is formed by
    Solution
    The outer layer or the covering of spermatophore is secreted by the phallic or conglobate gland. It is an elongated and flattened gland that lies below the ejaculatory duct. The posterior end is narrow and opens seperately by the side of male genital pore.
    So, the correct answer is 'B and C'.
  • Question 5
    1 / -0
    Number of vision units in each eye of Cockroach is
    Solution
    The compound eyes are sessile in the form of convex brownish-black, kidney-shaped structures on the lateral sides of the head. The eye produces mosaic vision similar to the crustaceans. Compound eyes are specially adapted to perceive movements of objects Each eye contains about 2,000 ommatidia. Hence these are known as vision units. 
    So the correct answer is '2000'.
  • Question 6
    1 / -0
    What is prominent in squatting position of frog?
    Solution
    Squatting is a posture where the weight of the body is on the feet (as with standing) but the knees and hips are bent. The hump in frog bears the whole weight of the body and is prominent in squatting position. So, the correct answer is 'Hump'.
  • Question 7
    1 / -0
    Brain of cockroach is made of two groups of
    Solution
    The central nervous system of cockroach consists of the three supra-oesophageal or cerebral ganglia, sub-oesophageal ganglia and circumoesophageal connectives in the head and a double ganglionated ventral nerve cord in the thorax and abdomen. It is formed by the fusion of three pairs of ganglia. 
    So the correct answer is 'Three ganglia'.

  • Question 8
    1 / -0
    Humidity and temperature receptors are located in cockroach over
    Solution
    Antennae are a pair of long, jointed and cylindrical structures movably articulated in the antennal sockets. These are organs of touch and smell. They move in all the directions to sense stimuli and changes in environment.
    So, the correct answer is 'Antennae'.
  • Question 9
    1 / -0
    Chordotonal organs are connected with sense of
    Solution
    Chordotonal organs are intradermal receptors that most often act as proprioceptors or are involved in hearing. They consist of simple elements called scolopidies, attached to the cuticle by one or more of their ends. They can be solitary or grouped in clusters. Hence, Chordotonal organs are connected with a sense of hearing.
    So the correct answer is 'Hearing'.
  • Question 10
    1 / -0
    Uricose glands are part of
    Solution
    Uricose glands are found associated with the mushroom-shaped gland of the male reproductive organ as long blind tubules at its periphery. These can also store uric acid and discharge it at the time of copulation over the spermatophore. These glands are also called utriculi majores.
    So the correct answer is 'Mushroom glands'.
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