Reproduction & Development in Animals MCQs Part III

1) A cell formed from cleavage is called a
a) Blastomere
b) Morula
c) Neurula
d) Blastula

2) Cleavage differs from mitosis in that
a) it occurs in all body cells
b) it occurs in the zygote
c) it results in identical daughter cells
d) it occurs only in vertebrates

3) A morula can be differentiated from a blastula by the
a) presence of a cavity in the former
b) presence of more yolk in the latter
c) absence of a cavity in the former
d) absence of yolk in the former

4) The archenteron is lined with
a) Endoderm
b) Ectoderm
c) Mesoderm
d) Mesoderm and endoderm

5) The discharge of a mature ovum from the Graafian follicle is known as
a) oogenesis
b) ovulation
c) oviposition
d) abortion

6) The vascular system and excretory organs develop from
a) Ectoderm
b) Endoderm
c) Mesoderm
d) None of these

7) The skeleton and muscles in a vertebrate are derived from embryonic
a) Ectoderm
b) Endoderm
c) Mesoderm
d) Endoderm and mesoderm

8) Organs of which set are endodermal derivatives?
a) Dermis, spleen, peritoneum
b) Brain, choroid, nerves
c) Liver, lungs, pancreas
d) Kidneys, spleen, retina

9) Sensory receptors such as the retina develop from
a) Ectoderm
b) Endoderm
c) Mesoderm
d) None

10) Blood flowing through the umbilical cord of a mammalian embryo is
a) 100% foetal
b) 50% maternal and 50% foetal
c) 100% maternal
d) 75% maternal and 25% foetal

11) The umbilical cord contains
a) The placenta
b) The umbilicus
c) The allantoic artery and vein
d) The discus proligerous

12) Placenta has a selectively permeable and hormone secreting outer layer known as the
a) chorion
b) amnion
c) mesoderm
d) trophoblast

13) Pseudopregnancy differs from normal pregnancy in the
a) Development of an ovum
b) Absence of a corpus luteum
c) Developmental changes in the endometrium
d) Absence of a foetus

14) Human embryo will be called as a foetus after
a) two months
b) four months
c) six months
d) seven months

15) The branch of biology that deals with the study of ageing is
a) Anthropology
b) Pathology
c) Gerontology
d) Ethology

16) Which of the following technology can give information about physiological and metabolic body processes?
a) PET scanning
b) CT scanning
c) Sonography
d) EEG

17) In one of the following ionising radiations are not used:
a) CT scan
b) X-ray
c) PET
d) NMR

18) Restorative regeneration of a mollusc includes the reconstitution of
a) a part of the foot
b) a part of the head
c) eye and eye stalk
d) all above

19) A glycoprotein released in response to a virus by cells is
a) tocopherol
b) calciferol
c) interferon
d) histamine

20) The zona pellucida is
a) a membrane that connects the ovary to the abdominal wall
b) a non-cellular membrane around the mammalian egg
c) follicle cells around the egg
d) none of the above

21) The growth which occurs due to multiplication of cells by repeated mitotic divisions and in which the size of the cells does not increase is called
a) auxetic growth
b) multiplicative growth
c) accretionary growth
d) degrowth

22) The branch of biology dealing with the progressive deterioration of cells, tissues, organs or organ systems as they grow older is called
a) gerontology
b) herpetology
c) palaentology
d) morphology

23) The steps involved in cellular growth is/are
a) cell division
b) cell elongation
c) cell differentiation and maturation
d) all of the above

24) The phase of slow growth in an individual is the
a) lag phase or preparatory phase
b) exponential phase
c) stationary phase
d) maturation

25) Reparative regeneration is common in
a) invertebrates
b) vertebrates
c) both the above
d) none of these

26) Substances synthesized during growth are
a) protoplasmic
b) apoplasmic
c) protoplasmic and apoplasmic
d) nucleic acid

27) Cancer of epithelial cells is termed
a) carcinoma
b) lymphoma
c) sarcoma
d) leukaemia

28) Neuronal cells are found in the
a) lung
b) CNS
c) Intestine
d) None of the above

29) The organ which is most affected by the deficiency of
is the

a) muscle
b) brain
c) liver
d) lung

30) The human liver weighs about
a) 5 kg
b) 6 kg
c) 1.5 kg
d) 3 kg

31) Lizards deliberately break off their tail to protect themselves from predators. This is called
a) autotomy
b) regenerative blastula
c) morphollaxis
d) none above

32) the characteristic of autotomy (leaving an external body organ on its own) is
found in

a) lizards
b) snakes
c) frogs
d) cockroach

33) Name the mammalian tissue which has no power of regeneration after damage/injury
a) peripheral nervous tissue
b) skin epidermis
c) tendon
d) smooth muscles

34) Which type of cancer is found in lymph nodes and spleen?
a) Carcinoma
b) Sarcoma
c) Leukemia
d) Lymphoma

35) As a general rule ionizing radiation is more damaging to
a) mature, stable cells
b) actively dividing cells
c) highly specialized cells
d) cells in which food is stored

36) The differential growth in different regions of the body is called
a) Auxetic growth
b) Allometric growth
c) Growth rhythmn
d) growth movement

37) The modern theory about ageing is that our body slowly loses its power
of defence against the invasion of germs and pathogens. This process starts
with the disappearance of which organ?

a) Thymus gland
b) Parathyroid gland
c) Pituitary gland
d) Spleen

38) What is the study of senescence and senility called?
a) Dendrology
b) Gerontology
c) Paleontology
d) Craniology

39) The uncontrolled growth of tissue in the body is called
a) allergies
b) phobia
c) cancer
d) acquired disease

40) There is rapid postnatal development during
a) puberty
b) post puberty
c) both the above
d) none of the above

41) Activation energy is required for
a) exothermal reactions
b) endothermal reactions
c) enzyme mediated reactions
d) starting all biochemical reactions

42) Which substance provides protection from carcinogens?
a) Aflatoxin
b) Sterigmatocytin
c) Penicillic acid
d) Tocopherol

43) In a human being the increase in height completely stops at the age of
a) 18-20 years
b) 20-22 years
c) 22-23 years
d) 25-16 years

44) Which of the following is scientifically true of death?
a) An organism dies because all its cells die
b) an organism can be born again after death
c) Death is a natural part of the life cycle
d) death prevents overcrowding of the planet earth

45) Absence of one of these results in ageing:
a) young collagen
b) keratin
c) elastic
d) none above

46) The rate of growth during the life span of an organism
a) increases
b) decreases
c) varies
d) remains constant

47) Restorative regeneration is common in
a) vertebrates
b) invertebrates
c) a few vertebrates
d) a few invertebrates

48) The hormone responsible for the proper growth of the body is secreted by the
a) thyroid
b) adrenals
c) posterior pituitary
d) anterior pituitary

49) The process of regeneration was first discovered in
a) Planaria
b) Hydra
c) Salamander
d) Sponges

50) The phenomena of morphallaxis refers to the
a) healing of injury
b) regrowth of a lost limb
c) reconstruction of the whole body
d) regeneration with the help of a blastema

51) The human body regularly loses cells in the region of the
a) skin surface
b) lining layer of gut
c) red blood cells
d) all of these

52) The largest blood cells are
a) lymphocytes
b) monocytes
c) acidophils
d) basophils

53) If one parent belongs to blood group A and the other to B then their children
can represent

a) A and B
b) AB
c) O
d) A, B, AB and O

54) The hardest part of the body is the
a) dentine
b) enamel
c) keratin
d) chitin

55) The largest cell of the body belongs to the group of
a) nerve cells
b) muscle cells
c) fibrils
d) osteoblast cells

56) Which of the following is an important property of life?
a) Photosynthesis
b) Growth
c) Cell wall
d) None

57) Growth is :
a) increase in size
b) increase in weight
c) Synthesis of new protoplasm
d) All of the above

58) Growth occurs when the rate of
a) anabolism is higher than that of catabolism
b) catabolism is higher than that of anabolism
c) both anabolism and catabolism are equal in rate
d) None of the above

59) Early embryonic developmental stages constitute a:
a) functional state
b) prefunctional state
c) transitional growth
d) fundamental growth

60) The steps involved in cellular growth are :
a) cell division
b) cell enlargement
c) cell differentiation
d) all of the above

61) Multiplication growth is found in the :
a) Old age
b) Adulthood
c) Embryo
d) Childhood

62) The usual shape of the growth curve is :
a) Sigmoidal
b) Inverted bell-shaped
c) Linear
d) Zig-zag

63) As compared to the whole body, the head of the new born human baby is
:

a) 1/3
b) 1/4
c) 1/2
d) 1/8

64) Broken arms are regenerated in :
a) Molluscs
b) Echinoderms
c) Fishes
d) Human beings

65) The parts of the lung affected by ageing are the:
a) pulmonary arteries
b) pulmonary veins
c) alveoli
d) all of these

66) The exponential growth of cells is a characteristic feature of the :
a) Unicellular organisms
b) Embryo
c) Tissue culture cells
d) Multicellular organisms

67) An essential biological phenomenon for maintaining the balance of nature
is :

a) Growth
b) Death
c) Senescence
d) None

68) Ageing is characterised by :
a) decline in metabolic activity
b) increased metabolic activity
c) increased anabolism
d) increased catabolism

69) Which theory states that the resistance of the body decreases with the
increase in age?

a) Compromise theory
b) Waste product theory
c) Somatic mutation theory
d) Immunity theory

70) Which of the following biological processes is faster in human males
than in human females?

a) Growth
b) Learning
c) Heart beat
d) Ageing

71) Repair is effected by the following cell process:
a) proliferation
b) migration
c) both of these
d) none of these

72) Regeneration is controlled by :
a) neural factors
b) hormonal factors
c) both
d) none

73) Which of the following has the greatest regenerating capacity?
a) Hydra
b) Sponge
c) Earthworm
d) Planaria

74) The whole body can be regenerated in :
a) Lizards
b) Tadpoles
c) Spiders
d) Planaria

75) Salamander is able to regenerate its:
a) limbs
b) tail
c) external gills
d) all of these

76) Growth hormone activity is :
a) increased by thyroxine
b) decreased by thyroxine
c) unaffected by thyroxine
d) none of the above

77) As compared to the adult male, the female has more
a) Protein
b) Brain
c) Skeleton
d) Fat

78) Which of the following substances present in the intercellular spaces becomes less permeable, rigid and insoluble during ageing?
a) Keratin
b) Elastin
c) Collagen
d) Globulin

79) A biological phenomenon esssential for maintaining the balance of nature
is

a) Growth
b) Death
c) Senescence
d) None of the above

80) The basic principles of embryonic development were stated by
a) Von Baer
b) Haeckel
c) Darwin
d) Weismann

81) A true coelom develops as a split in the
a) Mesoderm
b) Endoderm
c) Ectoderm
d) Between ectoderm and endoderm

82) The concept that an organiser is essential for embryonic development was given by
a) J. Axelrod
b) C. Landsteiner
c) H. Spermann
d) I. P. Pavlov

83) Due to the amount and distribution of yolk, the cleavage of a frog’s egg is
a) Equal holoblastic
b) Unequal holoblastic
c) Discoital meroblastic
d) Superficial meroblastic

84) The tadpole of a frog is
a) Ammonotelic
b) Ureotelic
c) Uricotelic
d) None of these

85) A structure which remains unchanged during the metamorphosis of a frog’s tadpole is the
a) Lung
b) Heart
c) Brain
d) Intestine

86) Degenerative changes occur during
a) Metamorphosis only
b) Parthenogenesis
c) Ageing only
d) metamorphosis and ageing

87) The science of ageing is called
a) Chronology
b) Odontology
c) Gynaecology
d) Gerontology

88) One of the minute cells that separates from the animal egg during its maturation is known as the
a) Primary spermatogonium
b) Secondary oogonium
c) Primary oogonium
d) Polar body

89) The number of chromosomes in the primary spermatocytes is
a) Haploid
b) Diploid
c) Triploid
d) Polyploid

90) Cell movements in animal development mainly occur in the stage
a) Morula
b) Blastula
c) Gastrula
d) Neurula

91) A growth producing substance called somatomedin is released by the
a) Anterior pituitary
b) Liver
c) Hypothalamus
d) Neuromuscular junction

92) Bacteria reproduce
a) Mostly asexually
b) Mostly sexually
c) Asexually only
d) Sexually

93) In those plants whose pulp is of economic importance, they are generally propagated by vegetative means because
a) It is cheaper
b) It is more economical
c) The pulp quality remains same
d) The pulp quality becomes better

94) The best definition of the process of gastrulation is that it is a process where the
a) Single layered blastula becomes two layered
b) Archenteron is formed
c) Cells move to occupy their definite position
d) Zygote gets converted into larva

95) In some eggs the future organs can be demarcated as to the regions even before the beginning of cleavage. This phenomenon is called
a) Regulated development
b) Mosaic development
c) Gynogenesis
d) Indetermined development

96) Placenta is the region where
a) Foetus is attached to mother by umbilical cord
b) Foetus is provided with mother’s blood
c) Foetus receives nourishment from mother’s blood
d) Foetus is covered by membrances.

97) Choose the correct one
a) Mesoderm – skeleton
b) Mesoderm – brain
c) Ectoderm – liver
d) Endoderm – epidermis

98) If the cells destined to form endoderm in the gastrula are removed, the new individual will be devoid of
a) Heart
b) Eyes and brain
c) Eyes
d) Visceral organs

99) How many sperms and ova are produced from 25 primary spermatocytes and 25 primary oocytes?
a) 100 sperms and 100 ova
b) 100 sperms and 25 ova
c) 100 sperms and 30 ova
d) 50 sperms and 25 ova

100) Which is the correct sequence in spermatogenesis?
a) Spermatogonia ® Spermatids Secondary spermatocytes ® Primary spermatocytes ® sperms
b) Spermatogonia ® Spermatids ® Primary spermatocytes ® Secondary spermatocytes ® Sperms
c) Primary spermatocytes ® Secondary spermatocytes ® Spermatids ® Spermatogonia ® Sperms
d) Spermatogonia ® Primary Spermatocytes ® Secondary spermatocytes ® Spermatids ® Sperms

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