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SSC Scientific Assistant - Structural Organization In Animals 1000+ MCQ [Solved] PDF Download

Thursday 9th of March 2023

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1. Which of the following statement(s) is/are correct regarding cockroaches ?
  1. The body of the cockroach is segmented and divisible into three distinct regions head, thorax and abdomen.
  2. Blood vascular system is of closed type.
  3. They are monoecious and both sexes have well developed reproductive organs.
  4. The development of P. americana is paurometabolus, meaning there is development through nymphal stage.

A. Both (i) and (ii)
B. Both (ii) and (iii)
C. Both (i) and (iv)
D. All of these
Answer : C
2. 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
3. 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
4. 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
5. 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
6. 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
7. 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
8. Identify the figure with its correct function Fig :. Adipose connective tissue

A. Areolar connective tissue Serves as a support framework for epithelium.
B. Adipose tissue Store fats and act as heat insulators.
C. Dense regular tissue Provide flexibility.
D. Dense irregular tissue Provide strength and elasticity.
Answer : B
9. If the head of cockroach is cut off, it will still alive for as long as one week. It is because of
A. the body which is covered with a hard chitinous exoskeleton.
B. head which holds a bit of nervous system.
C. head which is of no use.
D. food capturing appratus which is found elsewhere.
Answer : C
10. 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
11. 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
12. 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
13. Refer the given figure and identify the correct characteristic feature.

  1. It is a type of loose connective tissue.
  2. It contains fibroblast, macrophages, collagen fibres and mast cells.
  3. The cells of this tissue are specialized to store fats.
  4. The wall of internal organs such as the blood vessels, stomach and intestine contains this type of tissue.

A. (i) & (ii)
B. (i) & (iii)
C. (ii) & (iii)
D. (iii) & (iv)
Answer : A
14. The chondrocytes of connective tissue are
A. fibre secreting cells
B. bone forming cells
C. cartilage cells
D. bone eating cells Answer : C
15. Which of the following statement (s) is/are correct ?
  1. Loose connective tissue contains fibroblasts, macrophages and mast cells.
  2. Adipose tissue is a type of dense connective tissue located mainly beneath the skin.
  3. Tendons and ligaments are examples of dense irregular connective tissue.
  4. Cartilage, bones and blood are various types of specialized connective tissue.

A. Only (i)
B. Both (ii) and (iv)
C. Both (i) and (iii)
D. (i), (iii) and (iv)
Answer : D
16. Mast cells are associated with
A. exocrine glands
B. endocrine glands
C. areolar connective tissue
D. neural tissue
Answer : C
17. The figure given below shows the head region of cockroach. Identify A to F.

A. A- Compound eye, B-Ocellus, C-Maxilla, D-Mandible, E-Labrum, F-Labium
B. A- Ocellus, B-Compound eye, C-Mandible, D-Maxilla, E-Labrum, F-Labium
C. A- Ocellus, B-Compound eye, C-Mandible, D-Maxilla, E-Labium, F-Labrum
D. A- Ocellus, B-Compound eye, C-Maxilla, D-Mandible, E-Labrum, F-Labium
Answer : B
18. Which of the following type of tissue is being described by the given statements ?
  1. They are named because of their special function of linking and supporting other tissues/organs of the body.
  2. They include cartilage, bone, adipose and blood.
  3. They provide strength, elasticity and flexibility to the tissue.
  4. They also secrete modified polysaccharides, which accumulate between cells and fibres and act as matrix.

A. Epithelial tissue
B. Connective tissue
C. Muscle tissue
D. Neural tissue
Answer : B
19. 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
20. 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
21. 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
22. In which one of the following preparations, cell junctions come across most frequently ?
A. Ligament
B. Tendon
C. Cartilage
D. Ciliated epithelium
Answer : D
23. A student was given a sample of two tissues. He observes the tissues under the microscope and draws their figures (1 and 2) as shown below.

Identify the tissues (1 and 2).

A. 1: Columnar cells bearing cilia; 2: Unicellular glandular epithelium
B. 1: Cuboidal cells bearing cilia; 2: Multicellular glandular epithelium
C. 1: Compound cells bearing cilia; 2: Unicellular glandular epithelium
D. 1: Columnar cells bearing cilia; 2: Multicellular glandular epithelium
Answer : D
24. Statement 1 : Intercalated discs are important regions of cardiac muscle cells.
Statement 2 : Intercalated discs function as boosters for muscle contraction waves.

A. Statement-1 and statement-2 are true and statement-2 is a correct explanation for statement-1.
B. Statement-1 and statement-2 are true and ttatement-2 is not a correct explanation for statement-1
C. Statement-1 is true, and statement-2 is False
D. Both the statements are false.
Answer : A
25. 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
26. A student was given a sample of tissue. He observes and concludes the following characters.
  1. The cells are composed of a single layer of tall and slender cells.
  2. Their nuclei are located at the base.
  3. Free surface may have microvilli.
  4. It is found in the lining of stomach and intestine
  5. They help in secretion and absorption.

Based on the above features identify the epithelium.

A. Cuboidal epithelium
B. Columnar Epithelium
C. Squamous epithelium
D. Glandular epithelium
Answer : B
27. 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
28. Non-ciliated simple columnar epithelium often contains _______, which increase the surface area for secretion and absorption.
A. flagella
B.C. microvilli
D. all of these
Answer : C
29. Which of the following vertebrate tissues would be an excellent source of collagen?
A. Liver
B. Nerve
C. Muscle
D. Tendon
Answer : D
30. Read the following statements and answer the question.
  1. They have a hard and non-pliable ground substance rich in calcium salts and collagen fibres.
  2. They support and protect softer tissues and organs.
  3. Osteocytes are present in the spaces called lacunae.
  4. They also interact with skeletal muscles attached to them to bring about movements.

Which of the following type of tissue is being described by above statements ?

A. Cartilage
B. Bone
C. Blood
D. Neurons
Answer : B
31. Which of the follwing statement(s) is/are correct ?
  1. Cockroaches are brown or black bodied animals that are included in class insecta of phylum arthropoda.
  2. Males bear a pair of short, thread like anal styles which are absent in females.
  3. Heart of cockroach consists of elongated muscular tube lying along mid dorsal line of thorax and abdomen.
  4. The nymph grows by moulting about 13 times to reach the adult form.

A. Only (i)
B. Both (ii) and (iii)
C. Both (i) and (ii)
D. All of the above
Answer : B
32. Which of the following statement(s) is/are correct about nervous system of cockroach ?
  1. It consists of a series of fused segmentally arranged ganglia joined by paired longitudinal connectives on the ventral side.
  2. There are six ganglia lie in the thorax, and three in the abdomen.
  3. The sense organs are antennae, eyes, maxillary pulps, labial pulps and anal cerci etc.
  4. Each eye consists of about 5000 hexagonal ommatidia.

A. Both (i) and (iii)
B. Only (ii)
C. Both (i) and (iv)
D. All of these
Answer : C
33. 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
34. Statement 1: Typhlosole increases the effective area of absorption in the intestine.
Statement 2: Typhlosole, present in the intestine, is the characteristic feature of cockroach.

A. Statement 1 and 2 are true and statement 2 is the correct explanation of statement 1.
B. Statement 1 and 2 are true and statement 2 is not the correct explanation of statement 1.
C. Both statements 1 and 2 are false.
D. Statement 1 is true and statement 2 is false.
Answer : D
35. The kind of epithelium which forms the inner walls of blood vessels is
A. cuboidal epithelium
B. columnar epithelium
C. ciliated columnar epithelium
D. squamous epithelium
Answer : D
36. 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
37. Match the epithetial tissue given in column-I with its location given in column-II and choose the correct option.
Column IColumn II
(Epithelial tissue)(Location)
A. CuboidalI. Epidermis of skin
B. CiliatedII. Inner lining of blood vessels
C. ColumnarIII. Inner surface of gall bladder
D. SquamousIV. Inner lining of fallopian tube
E. KeratinizedV. Lining of pancreatic duct squamous

A. A V; B IV; C II; D III; E I
B. A III; B IV; C V; D II; E I
C. A V; B IV; C III; D II; E I
D. A III; B IV; C V; D I; E II
Answer : C
38. What will happen if ligaments are cut or broken?
A. No movements at joints.
B. Bones will become fixed.
C. Bones will become unfixed.
D. Bone will move freely at joints.
Answer : C
39. The given figure shows the digestive system of cockroach with few structures marked as A, B, C and D. Identify structures A to D.

A. A-Gizzard, B-Crop, C-Hepatic caecae, D-Malpighian tubules
B. A-Crop, B-Gizzard, C-Hepatic caecae, D-Malpighian tubules
C. A- Crop, B-Gizzard, C-Malpighian tubules, D-Hepatic caecae
D. A- Gizzard, B-Crop, C-Malpighian tubules, D-Hepatic caecae
Answer : B
40. Which of the following animal's sensory system does not has eyes but does possess light and touch sensitive organs (receptor cells) to distinguish the light intensities and to feel the vibrations in the ground?
A. Frog
B. Snake
C. Earthworm
D. Cockroach
Answer : C
41. The blood of cockroach contains no respiratory pigment. It means that
A. cockroach does not respire.
B. respiration is anaerobic.
C. oxygen goes directly into tissues by diffusion.
D. oxygen goes directly into tissues by intracellular capillary system.
Answer : D
42. 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 frm 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
43. What external changes are visible after the last moult of a cockroach nymph?
A. Development of anal cerci.
B. Development of both forewings and hind wings.
C. Development labium.
D. Mandibles become harder.
Answer : B
44. Find the incorrectly matched pair.
A. Unicellular glandular cells - Goblet cell
B. Saliva - Exocrine secretion
C. Fusiform fibres - Smooth muscle
D. Cartilage - Areolar tissue
Answer : D
45. 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
46. Which of the following statements regarding frog is not correct?
A. Fertilization is external and takes place in water.
B. External ear and tympanum can be seen externally.
C. In females the ureters and oviduct open separately in the cloaca.
D. Copulatory pad on the first digit of the fore limbs and vocal sac are present in male frog.
Answer : B
47. 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
48. 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
49. 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
50. 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

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