Structural Organization In Animals MCQ Solved Paper for SSC JHT

1. 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

2. Which one of the following pairs of structures distinguishes a nerve cell from other types of cell ?
A. Vacuoles and Fibres
B. Flagellum and Medullary sheath
C. Nucleus and Mitochondria
D. Cell body and Dendrites
Answer : D

3. 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

4. Gizzard (proventriculus) in cockroach lies between
A. oesophagus and stomach
B. crop and mesenteron
C. mesenteron and ileum
D. oesophagus and crop
Answer : B

5. 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

6. 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

7. 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

8. 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

9. 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

10. The only type of cell seen in a tendon is
A. muscle fibres
B. reticular cells
C. collagenous cells
D. fibroblasts
Answer : D

11. Neuroglia are
A. excitable cells of neural tissue.
B. supporting and non-excitable cells of neural tissue.
C. two to three times in volume of neural tissue.
D. protective and excitable cells of neural tissue.
Answer : B

12. 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

13. Cockroaches are brown or black bodied animals that are included in class _______ of phylum _______.
A. reptilia; annelida
B. insecta; arthropoda
C. insecta; annelida
D. reptilia; arthropoda
Answer : B

14. Compound squamous epithelium is found in
A. stomach
B. intestine
C. trachea
D. pharynx
Answer : D

15. 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

16. 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

17. 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

18. 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

19. Four healthy people in their twenties got involved in injuries resulting in damage and death of a few cells of the following.
Which of the cells are least likely to be replaced by new cells?
A. Liver cells
B. Neurons
C. Malpighian layer of the skin
D. Osteocytes
Answer : B

20. Smooth muscles are______.
A. voluntary, branched, uninucleate
B. voluntary, multinucleate, cylindrical
C. involuntary, cylindrical, multinucleate
D. involuntary, spindle shaped, uninucleated, tapering
Answer : D

21. 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

22. The figure given below shows the alimentary canal of cockroach with few structures labelled as 1, 2, 3 and 4. Identify the correct identification of the structure which is also called proventriculus and helps in grinding the food particles.

A. 1
B. 2
C. 3
D. 4
Answer : C

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. 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

25. 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

26. 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

27. 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

28. Hair present in the skin are
A. epidermal in origin and made of dead cells.
B. epidermal in origin and made of living cells.
C. dermal in origin and made of living cells.
D. dermal in origin and made of dead cells.
Answer : D

29. 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

30. In which one of the following preparations, cell junctions come across most frequently ?
A. Ligament
B. Tendon
C. Cartilage
D. Ciliated epithelium
Answer : D

31. 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

32. Match the types of connective tissue given in column-I with their examples given column-II and choose the correct option.

Column-I	Column-II
(Types of connective)	(Examples)
A. Loose connective	I. Tendons and ligaments tissue
B. Dense regular	II. Skin tissue
C. Dense irregular	III. Cartilage, bones, blood tissue
D. Specialized	IV. 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

33. 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 br>Answer : C

34. The chondrocytes of connective tissue are
A. fibre secreting cells
B. bone forming cells
C. cartilage cells
D. bone eating cells
Answer : C

35. 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

36. 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

37. 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

38. Match the terms given in column-I with their feature given in column-II and choose the correct option.

Column-I	Column-II
(Terms)	(Features)
A. Exocrine gland	I. They help to stop substances from leaking across a tissue
B. Endocrine gland	II. Hormones are secreted directly into the fluid bathing the gland
C. Tight junctions	III. They perform cementing to keep neighbouring cells together.
D. Adhering junctions	IV. 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

39. 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

40. 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

41. 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

42. 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

43. Match column-I (type of epithelium) with column-II (Description) and choose the correct option.

Column-I	Column-II
(Types of epithelium)	(Description)
A. Squamous	I. It is composed of a epithelium single-layer of cube-like cells
B. Cuboidal	II. Having cilia on their free epithelium surface
C. Columnar	III. It is composed of a single epithelium layer of tall and slender cells
D. Ciliated	IV. It is made up of a single thin epithelium layer of flattened cells with irregular boundaries

A. A IV; B I; C III; D II
B. A I; B IV; C III; D II
C. A IV; B I; C II; D III
D. A IV; B III; C I; D II
Answer : B

44. 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

45. Which of the following statement(s) is/are correct regarding respiratory system of cockroach ?

1. It consists of a network of trachea, that open through 12 pairs of small holes called spiracles present on the lateral side of the body.
2. Thin branching tubes carry oxygen from the air to all the parts.
3. The opening of the spiracles is regulated by sphincters.
4. Exchange of gases take place at the tracheoles by diffusion.

A. Only (i)
B. (i), (ii) and (iii)
C. (ii), (iii) and (iv)
D. All of these
Answer : C

46. 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