Structural Organisation in Animals Questions and Answers

1. Smooth muscles are-
A. voluntary, spindle-shaped, uninucleate
B. involuntary, cylindrical, striated
C. voluntary, multinucleate, cylindrical
D. involuntary, fusiform, non-striated.

2. In male cockroaches, sperms are stored in which part of the reproductive system?
A. Seminal vesicles
B. Mushroom glands
C. Testes
D. Vas deferens

3. Which of the following features is not present in Periplaneta americana?
A. Exoskeleton composed of N-acetylglucosamine
B. Metamerically segmented body
C. Schizocoelom as body cavity
D. Indeterminate and radical cleavage during embryonic development

4. Pseudostratitied epithelium is found in
A. seminiferous tubule
B. Fallopian tube
C. Trachea
D. kidney tubules

5. Assertion: Gap junctions perform cementing function to keep the neighbouring cells together.
Reason: Tight junctions facilitate the cells to communicate with each other by connecting the cytoplasm of adjoining cells, for rapid transfer of ions, small and big molecules, etc.
A. Both assertion and reason are true and reason is the correct explanation of assertion
B. Both assertion and reason are true but reason is not the correct explanation of assertion
C. Assertion is true but reason is false
D. Both assertion and reason are false.

6. Role of calciferous glands in the stomach of earthworm is to
A. neutralise the humic acid in the humus
B. produce HCl
C. emulsify fats
D. increase the absorptive area

7. Choose the wrong statement:
A. Tight junctions help to stop Substances from leaking across a tissue.
B. Adhering junctions perform cementing to keep neighbouring cells together
C. Gap junctions facilitate the cells to communicate with each other by connecting the nuclei of adjoining cells.
D. The main functions of cuboidal epithelium are secretion and absorption.

8. Through mosaic vision, a cockroach can receive
A. several images of an object with more sensitivity but less resolution
B. several images of an object with less sensitivity but less resolution
C. only one image of an object with less sensitivity but less resolution
D. several images of an object with less sensitivity but more resolution

9. Choose the Incorrect statement from the following
A. Adipose tissue Is a type of dense connective tissue
B. Tendons attach muscle to bone
C. Cartilage is made up of chondrocytes
D. Cliated epithelium is the modified columnar pithelium.

10. Assertion: Blood in cockroach is colourless haemolymph with no respiratory pigment.
Reason: Respiration in cockroach occurs through diffusion in haemolymph.
A. Both assertion and reason are true and reason Is the correct explanation of assertion
B. Both assertion and reason are true but reason is not the correct explanation of assertion
C. Assertion is true but reason is false.
D. Both assertion and reason are false

11. Assertion: The nymph of a cockroach undergoes moulting several times.
Reason: There is gradual metamorphosis in cockroach.
A. Both assertion and reason are true and reason the correct explanation of assertion.
B. Both assertion and reason are true but reason is not the correct explanation of assertion.
C. Assertion is true but reason is false
D. Both assertion and reason are false.

12. The body cells in cockroach discharge their nitrogenous waste in the haemolymph mainly in the form of
A. Urea
B. calcium carbonate
C. potassium urate
D. ammonia

13. The function of the gap junction is to
A. separate two cells from each other
B. stop substance from leaking across a tissue
C. performing cementing to keep neighbouring cells together
D. facilitate communication between adjoining cells by connecting the cytoplasm for rapid transfer of ions, small molecules and some large molecules.

14. Osteoid refers to
A. the smallest bone of the body.
B. young hyaline matrix of true bone in which calcium salts are deposited.
C. membranous ossification of cranium.
D. the largest bone of the body.

15. Which one is a specialised connective tissue among these?
A. Adipose tissue
B. Areolar tissue
C. Bone
D. Fibroblasts

16. The structure in earthworm which serves as a wedge to force open cracks in the soil is
A. Peristomium
B. Clitellum
C. Setae
D. Prostomium

17. Most of the cartilages in vertebrate embryo are replaced in adult by
A. Blood
B. Tendons
C. Bones
D. Aligaments

18. Which among these is not involved in excretion in cockroaches?
A. Malpighian tubules
B. Nephrocytes
C. Uricose glands
D. Maxillary palps

19. Ovarioles are
A. structural units of ovaries of female cockroach
B. structural units of gonads of male cockroach
C. equivalent to uterus in function
D. the ligaments that connect ovaries to the abdominal walls.

20. Which of the following is incorrect about earthworm?
A. Testes -11th and 12th segments
B. Accessory glands-17th and 19th segments
C. Clitellum – 14th segment pore
D. Female genital – 14th to 16th segments

21. The first body segment of earthworm is
A. Peristome
B. Protostomium
C. Peristomium
D. Protostome

22. The tissue which covers the external surface of the animal body and the internal surface of visceral organs is
A. epithelial tissue
B. connective tissue
C. adipose tissue
D. none of these

23. Choose the correctly matched pair
A. Tendon-Specialised connective tissue
B. Adipose tissue-Dense connective tissue
C. Areolar tissue – Loose connective tissue
D. Cartilage-Loose connective tissue

24. Choose the correctly matched pair
A. Inner lining of salivary ducts – Ciliated epithelium
B. Moist surface of buccal cavity – Glandular epithelium
C. Tubular parts of nephrons – Cuboidal epithelium
D. Inner surface of bronchioles – Squamous epithelium

25. What type of cartilaginous tissue is found in the intervertebral discs?
A. Costal cartilage
B. Hyaline cartilage
C. White firbous cartilage
D. Yellow elastic cartilage

26. Read the following statements and choose the correct answer:
I. Gap junctions cement adjacent cells together.
II. Areolar tissue contains fibroblasts, macrophages and mast cells.
III. Tight junctions facilitate the cells to communicate with each other.
IV. Adhering junctions help to stop substances from leaking across tissues.
V. Cells of connective tissue except blood secrete fibres of structural proteins called elastin.
A. I, II and III only are wrong.
B. I, III and IV only are wrong.
C. II and V only are wrong.
D. I, II and V only are wrong.

27. Choose the wrongly matched pair regarding the position of reproductive structures in earthworm
A. Testes-10th and 11th segments
B. Spermathecae-6th to 9th segments
C. Male genital pore-9th segment
D. Ovaries-Inter segmental septum of 12th and 13th segments.

28. In cockroach, the arthrodial membrane
A. joins the sclerites
B. forms the tegmina
C. forms the hypopharynx
D. covers the compound eyes

29. Which one of the following is not a sensory structure in cockroach?
A. Antennae
B. Anal cerci
C. Eyes
D. Proventriculus

30. Statement A : The secretion of collaterial gland forms the egg case in cockroach.
Statement B: The development in cockroach is hemimetabolous.
A. statement A is correct and statement B is
B. Both the statements A and B are correct and B is the reason for A
C. Statement B is correct and statement A is wrong
D. Both the statements A and B are correct and B is not the reason for A.

31. Typhlosole is a structure associated with
A. circulatory system of earthworm
B. digestive system of earthworm
C. excretory system of earthworm
D. reproductive system of earthworm.

32. In cockroach, the oothecae are formed by the secretion of
A. conglobate gland
B. phallic gland
C. collaterial gland
D. mushroom gland.

33. What external changes are visible after the last moult of a cockroach nymph?
A. Both fore wings and hind wings develop
B. Labium develops
C. Mandibles become harder
D. Anal cerci develop

34. Intercalated discs are characteristic of muscles found in
A. Heart
B. urinary bladder
C. thigh
D. stomach

35. Which of the following parts of cockroach leg is attached to thorax ventrally?
A. Trochanter
B. Claw
C. Coxa
D. Femur

36. Select the correct option with respect to cockroaches
A. Malpighian tubules convert nitrogenous wastes into urea.
B. Males bear short anal styles not present in females.
C. Nervous system comprises of a dorsal nerve cord and ten pairs of ganglion.
D. The fore wings are tegmina which are used in flight

37. Which one of the following is one of the paths followed by air or O2 during respiration in the adult male Periplaneta americana as it enters the animal body?
A. Spiracle in metathorax, trachea, tracheoles, Oxygen diffuses into cells
B. Mouth, bronchial tube, trachea, oxygen enters cells
C. Spiracles in prothorax, tracheoles, trachea, oxygen diffuses into cells
D. Hypopharynx, mouth, pharynx, trachea, tissues.

38. Histology deals with the study of
A. structures which can be discerned with naked eye
B. tissues
C. cells
D. changes in form and structure during development.

39. Mast cells of connective tissue contain
A. vasopressin and relaxin
B. heparin and histamine
C. heparin and calcitonin
D. serotonin and melanin.

40. The matrix of bone and cartilage can be distinguished by the presence of _______ In former
A. Haversian canal
B. Lacuna
C. Chromatophores
D. Adipose cells

41. Multilocular adipose tissue differs from unilocular adipose tissue in that it
A. has fewer blood vessels
B. has greater number of mitochondria
C. undergoes lipolysis under influence of epinephrine
D. has cells that are not electrically coupled.

42. If a live earthworm is pricked with a needle on its outer surface without damaging its gut, the fluid that comes out is
A. coelomic fluid
B. slimy mucus
C. haemolymph
D. excretory fluid

43. Pseudostratified epithelium lines
A. urethra and oviduct
B. trachea and respiratory tract
C. urinary bladder
D. thelium

44. Which of the following is correct regarding respiration in adult frog?
A. In water- skin, gills
B. On land-skin, buccal cavity
C. In water-skin, buccal cavity
D. On land-Skin, lungs, gills

45. 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

46. Pheretima and its close relatives derive nourishment from
A. sugarcane roots
B. decaying fallen leaves and soil organic matter
C. soil insects
D. small pieces of fresh fallen leaves of maize, etc

47. Select the correct statement from the ones given below with respect to Periplaneta americana.
A. Nervous system located dorsally, consists of segmentally arranged ganglia joined by a pair of longitudinal connectives
B. Males bear a pair of short thread like anal styles
C. There are 16 very long Malpighian tubules present at the junctions of midgut and hindgut
D. Grinding of food is carried out only by the mouth parts.

48. Bone is mainly composed of
A. iron and phosphorus
B. sulphur and calcium
C. calcium and phosphorus
D. calcium and magnesium.

49. Read the following statements and choose the correct options
A. Blood cells secrete fibres of structural proteins called collagen or elastin
B. Neuroglial cells protect and support the nephrons
C. Osteocytes are present in spaces called lacunae
D. Striated muscle fibres are bundled together in a parallel fashion
E. Biceps are involuntary and straited.
A. C and D are wrong
B. B and D are wrong
C. A and C are wrong
D. A, B and E are wrong.

50. Specialised chemoreceptors located on the anterior part of earthworms are
A. heat receptors
B. photo receptors
C. taste receptors
D. pressure receptors