Self Studies
Self Studies
Self Studies
Self Studies

Structural Organisation in Animals Test - 52

Result Self Studies

Structural Organisation in Animals Test - 52
  • Score

    -

    out of -
  • Rank

    -

    out of -
TIME Taken - -
Self Studies

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Self Studies Self Studies
Weekly Quiz Competition
  • Question 1
    1 / -0
    Movement of coelomic fluid helps in locomotion of
    Solution
    The setae and the coelomic fluid also assist in the locomotion. The body of earthworm exhibits extension, contraction and anchoring in the anterior and posterior regions during locomotion. Circular and longitudinal muscles of the body wall are useful in extension and contraction of the body. The septa mechanically isolate each segment, keeping the coelomic fluid. The hydrostatic skeleton, making such fine-tuned movements impossible.
    So the correct answer is 'Earthworm'.
  • Question 2
    1 / -0
    Oxygen carrying earthworm is 
    Solution
    The blood of Pheretima is red coloured due to the presence of respiratory pigment haemoglobin (a red oxygen-carrying pigment). The haemoglobin is not contained in the corpuscles but it is found dissolved in the plasma and it is known to transport oxygen to the different part of the body in the earthworm. 
    So the correct answer is 'Haemoglobin'.
  • Question 3
    1 / -0
    Chloragogen cells in Pheretima are specialised for
    Solution
    Chloragogen cells, also called as y cells are cells in annelids that function similarly to the liver in vertebrates. The cells store glycogen and neutralize toxins, are yellowish in colour due to the presence of yellow granules called chloragosomes and are present in the coelomic fluid of some annelids. These cells are derived from the inner coelomic epithelium and help in excretory functions.
    So the correct answer is 'Excretion'.
  • Question 4
    1 / -0
    Nephridia of Pheretima are
    Solution
    Integumentary nephridia are smallest nephridia of Pheretima. So they are also called as micro nephridia. They lie scattered on the entire internal surface of the body wall except in the first two segments. They are V-shaped structures and hang out in the coelom. The number ranges from 200-250 in each segment, except in the clitellar segments. In the clitellar segments, they are ten times more than the usual number.
    So the correct answer is 'Micrometanephridia'.
  • Question 5
    1 / -0
    Enteronephric nephridia of earthworm are connected with
    Solution
    The enteronephric nephridia play an important role in the digestive process as it moistens the food and helps in digestion. The nitrogenous compound is used by symbiotic bacteria which lives inside the alimentary canal. The enteronephric nephridia are also called protonephridia as it helps in digestion. It also helps in osmoregulation, as the water which passes through the alimentary canal is absorbed in an intestine, and water is conserved in dry regions. Enteronephric nephridia also helps in excretion process.
    So, the cirrect answer is 'All of the above'
  • Question 6
    1 / -0
    Number of lateral hearts in Pheretima are 
    Solution
    In Pheretima the posterior segments behind 13th the dorsal and ventral blood vessels have no direct connections but anteriorly both these vessels are connected together by 4 pairs of pulsatile hearts which are neurogenic, i.e., the heartbeat originates in the nerve cells of the hearts. The hearts are contractile and encircle the alimentary canal, they are in the segments 7th, 9th, 12th, and 13th.
    So the correct answer is '8'.
  • Question 7
    1 / -0
    Nephrostome occurs in earthworm
    Solution
    In earthworm septal nephridia occur on the inter-seg­mental septum between 15th and 16th segments to the posterior side of the body. Each septal nephridium consists of nephrostome, neck, the body of nephridium and the terminal duct. It is also known as ciliated funnel or nephrostome. It is the proximal flattened funnel-shaped structure of the nephridium lying in the coelom.
    So the correct answer is 'Septal nephridia'.

  • Question 8
    1 / -0
    Chloragogen cells of Earthworm are similar to an organ of vertebrates
    Solution
    Chloragogen cells store glycogen and neutralize toxins, are yellowish in colour due to the presence of yellow granules called chloragosomes and are present in the coelomic fluid of some annelids. It is similar to the liver of a vertebrate. They take part in the deamination of amino acids and synthesis of urea. Silicates taken in along with food are deposited in the chloragogen cells.
    So the correct answer is 'Liver'.
  • Question 9
    1 / -0
    Which is not correct for Earthworm
    Solution
    The setae in earthworm are made up of chitin. The hot KOH cannot dissolve chitin and hence if the earthworm is placed in KOH solution, the setae would be left undissolved.
    So, the correct answer is 'Setae easily dissolve in KOH'.
  • Question 10
    1 / -0
    In Earthworm, dorsal blood vessel is collecting channel
    Solution
    In the first thirteen segments, the dorsal vessel acts as a distri­buting vessel and extends up to the cerebral ganglion. It runs along the mid-dorsal line of the body and just above the alimentary canal, there are few longitudinal vessels acting as collecting or distributing vessels which are connected with one anoth­er by some transverse vessels acting as the heart.
    So the correct answer is 'Behind 13th segment'.
Self Studies
User
Question Analysis

  • Correct -

  • Wrong -

  • Skipped -

My Perfomance
  • Score

    -

    out of -
  • Rank

    -

    out of -
Re-Attempt Weekly Quiz Competition
Self Studies Get latest Exam Updates
& Study Material Alerts!
No, Thanks
Self Studies
Click on Allow to receive notifications
Allow Notification
Self Studies
Self Studies Self Studies
To enable notifications follow this 2 steps:
  • First Click on Secure Icon Self Studies
  • Second click on the toggle icon
Allow Notification
Get latest Exam Updates & FREE Study Material Alerts!
Self Studies ×
Open Now