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Structural Organization In Animals MCQ Solved Paper for IBPS SO

Thursday 9th of March 2023

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1. Read the following statements and answer the question.
  1. It is made of a single thin layer of flattened cells with irregular boundaries.
  2. They are found in the walls of blood vessels and air sacs of lungs.
  3. They are involved in functions like forming a diffusion boundary.

Which of the following characteristics of tissue is being described by the above statements ?
A. Squamous epithelium
B. Columnar epithelium
C. Ciliated epithelium
D. Compound epithelium
Answer : A
2. Consider the following statements regarding cockroach and mark the correct option.
  1. Head is formed by the fusion of 6-segments.
  2. Mouth parts are biting and chewing type.
  3. Crop is the part of mid gut.
A. Only (ii) is correct
B. (ii) and (iii) are correct
C. (i) and (ii) are correct
D. Only (iii) is correct
Answer : C
3. Male cockroach can be identified from the female by the presence of
A. long antennae
B. wingless body
C. elongated abdomen
D. anal styles
Answer : D
4. A student was given a specimen to identify on the basis of the characteristics given below.
  1. They are metamerically segmented.
  2. Presence of closed circulatory system.
  3. They have circular and longitudinal muscles for locomotion.

Identify the specimen.
A. Frog
B. Pheretima
C. Cockroach
D. Rabbit
Answer : B
5. The chondrocytes of connective tissue are
A. fibre secreting cells
B. bone forming cells
C. cartilage cells
D. bone eating cells
Answer : C
6. Which of the following type of muscle tissue is being described on the basis of given statements ?
  1. These muscle fibres taper at both ends and do not show striations.
  2. The wall of internal organs such as the blood vessels, stomach and intestine contain this type of muscle tissue.
  3. They are involuntary as their function cannot be directly controlled.
A. Skeletal muscle
B. Smooth muscle
C. Cardiac muscle
D. All of these
Answer : B
7. Choose the correct sequence of alimentary canal of Cockroach
A. Gizzard -> Crop ->?Malphigian tubules ->?Hepatic caeca ->?Rectum.
B. Gizzard -> Hepatic caeca -> Crop -> Rectum -> Malphigian tubules.
C. Crop -> Gizzard ->?Hepatic caeca ->?Malphigian tubules ->?Rectum.
D. Crop -> Hepatic caeca ->?Gizzard -> Rectum -> Malphigian tubules.
Answer : C
8. The ciliated columnar epithelial cells in humans occur in
A. Eustachian tube and stomach lining
B. bronchioles and fallopian tubes
C. bile duct and oesophagus
D. fallopian tubes and urethra
Answer : B
9. The major functions of loose connective tissue include
A. occupying spaces between organs and supporting epithelia.
B. supporting and surrounding blood vessels and nerves
C. cushioning organs, storing lipids and facilitating diffusion.
D. All of the above
Answer : D
10. Three essential components of most neurons are
A. simple epithelium, extracellular matrix and nerves.
B. axon, dendrites and cell body.
C. nerve cells, synapse and neuroglia.
D. mylein sheeth, node of Ranvier and Schwann cells.
Answer : B
11. Identify figures-I and II.

Figure I Figure II
A. Dense regular Dense irregular connective tissue, connective tissue
B. Loose irregular Loose regular connective tissue, connective tissue
C. Adipose tissue, Specialized connective tissue
D. Connective tissue Areolar tissue proper
Answer : A
12. Which statement regarding anal cerci and anal style in cockroach is correct?
A. Anal cerci are absent but anal styles are present in male.
B. Anal cerci are absent and anal styles are present in female.
C. Anal styles are absent and anal cerci are present in male.
D. Anal styles are absent and anal cerci are present in female.
Answer : D
13. The shape of a persons ear is due to mainly to
A. dense regular connective tissue
B. dense irregular connective tissue
C. elastic cartilage
D. fibrocartilage
Answer : C
14. Which of the following statement(s) is/are correct about muscle tissue ?
A. Each muscle is made of many long, cylindrical fibres arranged in parallel arrays.
B. Muscle fibres contract (shorten) in response to stimulation, then relax (lengthen) and return to their uncontracted state in a coordinated fashion.
C. Muscles play an active role in all movements of the body.
D. All of the above
Answer : D
15. Epithelial tissue is distinguished from connective tissue, muscular, or nervous tissue by its
A. large extracellular matrix.
B. contractibility.
C. ability to carry action potentials.
D. basement membrane.
Answer : D
16. Which of the following statement(s) is/are correct regarding excretory system of cockroach ?
  1. Excretion is performed by malphigian tubules.
  2. They absorb nitrogenous waste products and convert them into uric acid which is excreted out through hindgut. Hence, this insect called ammonetelic.
  3. In addition, fat body, nephrocytes and uricose glands also help in excretion.
A. Only (i)
B. Both (ii) and (iii)
C. Both (i) and (iii) D. All of these
Answer : C
17. Smooth muscles are______.
A. voluntary, branched, uninucleate
B. voluntary, multinucleate, cylindrical
C. involuntary, cylindrical, multinucleate
D. involuntary, spindle shaped, uninucleated, tapering
Answer : D
18. Match column-I with column-II and choose the correct option.
Column-IColumn-II
A. PeriplanetaI. Hepatic caecae americana
B. A ring of 6-8 blindII. Phylum arthropoda tubules
C. Vascular systemIII. Spiracles
D. 10 pairs of smallIV. Malpighian tubules holes
E. ExcretionV. Open type
A. A I; B II; C III; D IV; E V
B. A II; B I; C V; D III; E IV
C. A II; B I; C III; D V; E IV
D. A III; B IV; C II; D V; E I
Answer : B
19. The diagram given below represents the reproductive organ of male cockroach. Choose the correct labelling of the part of marked as A, B, C and D.
A. A 8th sternum, B - Anal cercus, C - 10th tergum, D - Anal style
B. A - 10th tergum, B - Anal cercus, C - Anal style, D - 8th sternum
C. A - Anal style, B - Anal cercus, C - 10th tergum, D- 8th sternum
D. A - Anal cercus, B - 8th sternum, C - 10th tergum, D - Anal style.
Answer : A
20. The given figure shows open circulatory system of cockroach with structure marked as A, B and C. Which structure is a 13 pair of wing shaped involuntary muscles and mantain blood circulation?
A. A
B. B
C. C
D. Both A nad B
Answer : C
21. Which of the following vertebrate tissues would be an excellent source of collagen?
A. Liver
B. Nerve
C. Muscle
D. Tendon
Answer : D
22. Which of the following statements is not correct regarding neural tissue ?
A. It exerts the greatest control over the bodys responsiveness to changing conditions.
B. Chondrocytes, the unit of neural system are excitable cells.
C. Neuroglial cells protect and support neurons.
D. When a neuron is suitably stimulated, an electrical disturbance is generated.
Answer : B
23. Figure given below shows reproductive system of female cockroach. The correct labellings indicated by alphabets (A, B & C) are respectively
A. A-Spermatheca, B-Collaterial glands, C-Gonapophyses
B. A-Phallic gland, B-Collaterial glands, C-Gonapophyses
C. A-Spermatheca, B-Seminal vesicle, C-Gonapophyses
D. A-Spermatheca, B-Collateral glands, C-Tegmina
Answer : A
24. The following figure shows the extarnal features of cockroach with few structures labelled as A, B, C, D, & E. Identify A to E .
A. A- Mesothorax, B-Pronotum, C-Metathorax, D-Tegmina, E-Anal style
B. A- Pronotum, B-Metathorax, C-Mesothorax, D-Tegmina, E-Sterna
C. A- Pronotum, B-Mesothorax, C-Metathorax, D-Tegmina, E-Anal cerci
D. A- Pronotum, B-Mesothorax, C-Metathorax, D-Tegmina, E-Anal style
Answer : C
25. Phallic organs in cockroach are related to
A. male excretory system.
B. male reproductive system.
C. female excretory system.
D. female reproductive system.
Answer : B
26. Muscle tissue cells are contractile, which means they
A. are responsible for the production and secretion of enzymes.
B. are specialized in contraction and relaxation.
C. help in the movement of involuntary organs only.
D. all of the above
Answer : B
27. Cartilage tissues are likely to be slow in healing following an injury because
A. cartilage cells cannot reproduce.
B. they lack direct blood supplies.
C. the intercellular material is missing.
D. cartilage cells are surrounded by fluids.
Answer : B
28. Non-ciliated simple columnar epithelium often contains _______, which increase the surface area for secretion and absorption.
A. flagella
B. collagen fibres
C. microvilli
D. all of these
Answer : C
29. The fibres of which of the following muscles are fusiform and do not show striations
A. Skeletal muscles
B. Cardiac muscles
C. Both (a) and (b)
D. Smooth muscles
Answer : D
30. The supportive skeletal structures in the human external ears and in the nose tip are examples of
A. ligament
B. areolar tissue
C. bone
D. cartilage
Answer : D
31. Match the terms given in column-I with their feature given in column-II and choose the correct option.
Column-IColumn-II
(Terms)(Features)
A. Exocrine glandI. They help to stop substances from leaking across a tissue
B. Endocrine glandII. Hormones are secreted directly into the fluid bathing the gland
C. Tight junctionsIII. They perform cementing to keep neighbouring cells together.
D. Adhering junctionsIV. Secretes mucus, saliva, earwax, oil, milk, digestive enzymes and other cell products
A. A IV; B II; C I; D III
B. A II; B IV; C I; D III
C. A IV; B II; C III; D I
D. A IV; B I; C II; D III
Answer : A
32. Tendons and ligaments are the examples of
A. areolar connective tissue
B. adipose tissue
C. dense regular connective tissue
D. loose connective tissue
Answer : C
33. Refer the given figure of female reproductive system of cockroach and identify the correct labels (marked as 1, 2, 3 and 4) which are collectively called genital pouch.
A. 1 & 2
B. 1 & 3
C. 2 & 4
D. 3 & 4
Answer : D
34. Which of the following type of cell junction is not found in animal tissues ?
A. Adhering junction
B. Tight junction
C. Gap junction
D. Plasmodesmata
Answer : D
35. In cockroach, the testes are present in
A. 3, 4, 5 abdominal segments
B. 4, 5, 6 abdominal segments
C. 5, 6, 7 abdominal segments
D. 6, 7, 8 abdominal segments
Answer : B
36. Which of the following statement is/are correct regarding digestive system of cockroach ?
  1. Mouth opens into a short tubular pharynx, leading to a narrow tubular passage called oesophagus.
  2. Gizzard helps in grinding the food particles.
  3. A ring of 6-8 blind tubules called hepatic or gastric caecae is present at the junction of foregut and midgut, which secrete digestive juice.
  4. At the junction of midgut and hindgut is present another ring of 100-150 yellow coloured thin filamentous malphigian tubules which help in removal of excretory products from haemolymph.
A. Only (i)
B. Both (ii) and (iii)
C. Both (i) and (iv)
D. All of these
Answer : D
37. Which of the following types of connective tissue is mismatched with its matrix ?
A. Areolar Loosely packed matrix of protein fibres
B. Bone Mineralized matrix
C. Cartilage Highly vascular matrix
D. Blood Liquid matrix
Answer : C
38. In which one of the following preparations, cell junctions come across most frequently ?
A. Ligament
B. Tendon
C. Cartilage
D. Ciliated epithelium
Answer : D
39. Nervous tissue cells that play several supporting roles but do not transmit impulses are called
A. glial cells
B. dendrites
C. nerve cells
D. neurons
Answer : A
40. What are the three basic components of connective tissues?
A. Ground substance, cells and basement membrane
B. Cartilage, intercellular matrix and serum
C. Cells, protein fibers and ground substance
D. Collagen, elastin and reticular fibers
Answer : C
41. Which of the following is involved in the production of new blood cells ?
A. Adipose cell
B. Bone marrow
C. Liver
D. Matrix
Answer : B
42. Select the correct statement regarding Periplaneta americana
A. There are 16 very long malpighian tubules present at the junctions of midgut and hindgut.
B. Grinding of food is carried out only by the mouth parts.
C. Nervous system is located ventrally and consists of segmentally arranged ganglia joined by a pair of longitudinal connectives.
D. Females bear a pair of short thread like anal styles.
Answer : D
43. In all connective tissues, except which of the following, the cells secretes the fibres of collagen or elastin protein ?
A. Bone
B. Cartilage
C. Areolar connective tissue
D. Fluid connective tissue
Answer : D
44. The given figure shows the nephridial system of earthworm and answer the question.

Select the option which shows the correct identification and the function of the structure marked as X.
A. Lateral heart. It is a blood pumping organ.
B. Calciferous glands. They neutralize the humic acid present in humus.
C. Nephridia. It regulates the volume and composition of the body fluids.
D. Blood glands. They produce blood cells and haemoglobin which is dissolved in blood plasma.
Answer : D
45. General function of gland is to
A. protect the body.
B. control the function of epithelial tissues.
C. produce and secrete specialized compounds to control and maintain different body functions.
D. help to maintain blood pressure and nerve actions.
Answer : C
46. The only type of cell seen in a tendon is
A. muscle fibres
B. reticular cells
C. collagenous cells
D. fibroblasts
Answer : D
47. Lack of blood supply and presence of the noncellular basement membrane are the characteristics of the
A. muscular tissue
B. fluid connective tissue
C. epithelial tissue
D. nervous tissue
Answer : C
48. Match the description given in column I with their examples given in column II and choose the correct option.
Column IColumn II
(Description)(Example)
1. Aquatic respiratoryA. Skin organ
2. Organ which actsB. Ureter urogenital duct and opens into the cloaca
3. A small median chamberC. Cloaca that is used to pass faecal matter, urine and sperms to the exterior
4. A triangular structureD. Sinus venosus which joins the right atrium and receives blood through vena cava
A. 1 - A, 2 - B, 3 - C, 4 - D
B. 1 - C, 2 - A, 3 - D, 4 - B
C. 1 - B, 2 - A, 3 - C, 4 - D
D. 1 - C, 2 - B, 3 - D, 4 - A
Answer : A
49. The mouth parts of cockroach are
A. cutting and biting type.
B. piercing and sucking type.
C. sucking and rasping type.
D. sucking and siphoning type.
Answer : A
50. Match the types of connective tissue given in column-I with their examples given column-II and choose the correct option.
Column-IColumn-II
(Types of connective)(Examples)
A. Loose connectiveI. Tendons and ligaments tissue
B. Dense regularII. Skin tissue
C. Dense irregularIII. Cartilage, bones, blood tissue
D. SpecializedIV. Fibroblasts, macrophages connective tissue and mast cells
A. A I; B IV; C II; D III
B. A I; B IV; C III; D II
C. A IV; B I; C II; D III
D. A IV; B II; C I; D III
Answer : C
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