Self Studies
Self Studies
Self Studies
Self Studies

Structural Organisation in Animals Test - 21

Result Self Studies

Structural Organisation in Animals Test - 21
  • 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
    The summer sleep of frog is termed as
    Solution
    Adaptation is a natural phenomenon which helps the organism to adjust to the given environment. Aestivation is a state of animal dormancy in response to high temperatures and conditions. It is similar to hibernation, which is dormancy during winters. So, the correct answer is option B.
  • Question 2
    1 / -0
    Myelin sheath is formed by
    Solution
    The axon is covered by a lipid-rich membrane called myelin sheath. The myelin sheath is formed by Schwann cells and each Schwann cell covers a part of the axon. The region where axon is not covered by the myelin sheath called node of Ranvier.
    Thus, the correct answer is the option C.
  • Question 3
    1 / -0
    The structural and functional unit of the striated muscle fibre is called as
    Solution

    • The sarcolemma is the cell membrane of a striated muscle fibre cell.
    • The sarcoplasm of a muscle fibre is like the cytoplasm of other cells and it houses large amounts of glycosomes.
    • A myofibril is a basic rod-like unit of a muscle. Myofibrils comprise of repeating sections of sarcomeres. 
    • These sarcomeres appear as alternating dark and light bands under the microscope and are responsible for muscle contractions. Hence, considered the structural and functional unit of the striated muscle fibre.

    Thus, the correct answer is option B.

  • Question 4
    1 / -0
    Unstriped muscles are found in ____________.
    Solution
    • Unstriped muscles are smooth muscles that contract without conscious control arranged in the form of thin layers or sheets. 
    • These are made up of spindle-shaped, unstriated cells with a single nucleus and are found in the walls of the internal organs, such as the stomach, urinary bladder, intestine, and blood vessels (except for the heart). 
    • They are capable of slow rhythmic involuntary contractions.
    Thus, the correct answer is option B.
  • Question 5
    1 / -0
    In the resting muscle fibre, tropomyosin partially covers
    Solution
    When the muscle is at rest, tropomyosin prevents the interactions between thin and thick filaments. Tropomyosin is a double-helical protein that covers the active sites for myosin on the individual actin molecules, thus preventing the actin-myosin interaction necessary for the contraction of muscle.
    Thus, the correct answer is option C.
  • Question 6
    1 / -0
    The endothelium of blood vessel is composed of __________________.
    Solution
    Endothelium is made of single layer of squamous epithelial cells through which diffusion of gases takes place at the tissues and alveoli.
    Hence the correct option is B.
  • Question 7
    1 / -0
    Which among the following is not part of the actual structure of a neuron?
    Solution
    Schwann cells are neuroglial cells which are non-excitable cells that support the neurons. They secrete the myelin sheath that covers the axons. Dentrites, axon and Nissl's bodies are all parts of the neuron.
    So, the correct answer is option C.
  • Question 8
    1 / -0
    Match list I with list II and find the correct option.
    List I                                                                            List II
    (Epithelial tissue)                                                      (Location)
    (A) Cuboidal                                                 (1) Epidermis of skin
    (B) Ciliated                                                    (2) Inner lining of blood vessels
    (C) Columnar                                                 (3) Inner surface of gall bladder
    (D) Squamous                                                (4) Inner lining of Fallopian tube
    (E) Keratinized squamous                             (5) Lining of pancreatic duct
    Solution
    Different types of epithelial tissue are located in various locations of the body based on their function:
    • Cuboidal epithelium - Lining of the pancreatic duct (the 4 main pancreatic ducts are lined on the inner side by cuboidal epithelium).
    • Ciliated epithelium - Inner lining of fallopian tube (ciliated columnar epithelium for pushing the egg and later the dividing zygote towards the uterus).
    • Columnar - Inner surface of gall bladder (the innermost surface of the gall bladder is made of columnar epithelial cells that have a brush border-like appearance due to the presence of microvilli).
    • Squamous epithelium - Inner lining of blood vessels (the inner lining of blood vessels or the endothelium is made of squamous epithelium, that in the capillaries help in the exchange of substances, between the blood and the cells).
    • Keratinized squamous - Epidermis of the skin (the squamous epithelial cells lining the outermost layer of the skin are keratinized, dead, and impervious to water and microorganisms).
    So, the correct answer is '(A)-(5), (B)-(4), (C)-(3), (D)-(2), (E)-(I)'.
  • Question 9
    1 / -0
    Commonly known as body fat:
    Solution
    Adipose tissue is commonly known as body fat. It is a specialized connective tissue consisting of lipid-rich cells called adipocytes. As it comprises about 20-25% of total body weight in healthy individuals, the main function of adipose tissue is to store energy in the form of lipids (fat).
    Hence, the correct option is C.
  • Question 10
    1 / -0
    Schwann cell is found around
    Solution
    The axon is covered by a lipid-rich membrane, called myelin sheath. The myelin sheath is formed by Schwann cells and each Schwann cell covers a part of the axon.
    Thus, the correct answer is option (A) Axon.
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