100 Best MCQs on Mammals Topic with Answers

(1). Mammalian characteristics evolved gradually over a period of:

(a) 150 million years (b) 250 million years

(c) 200 million years (d) 300 million years

(2).Early synapsids were the…..

(a) Pterosaur (b) Pelycosaurs (c) Pterodactyls (d) None

(3).Modern mammals include….

(a) Monoterms (b) Marsupial (c) Placental (d) All of these

(4).Most mammals are:

(a) Oviparous (b) Viviparous (c) Oviviparous (d) All

(5).Metanephric kidneys permit mammals to erect without water loss:

(a) Ammonia (b) Uric acid (c) Urea (d) All

(6).Early mammals were:

(a) Nocturnal (b) Lack of alfactory (c) Blind (d) All

(7).Unlike others mammal’s monoterm possess…..

(a) Hairs (b) Teeth (c) Mammary glands (d) Cloaca

(8).How many species of monoterms found in Australia and New Guines….

(a) Six (b) Two (c) Five (d) Eight

(9).Metatheria are…….

(a) Oviparous (b) Viviparous (c) Oviviviparous (d) None

(10).In metatheria a protective pouch covers the female mammary gland called as:

(a) Placenta (b) Protective shell (c) Marsupium (d) Both A & B

(11).Prototheria contains…..

(a) Placental mammals (b) Extinct mammals

(12).Eutheria contains…..

(a) Placental mammals (b) Marsupium (c) Both A & B (d) None

(13).Exchange between material and fetal circulatory system occur by:

(a) Uterus (b) Blood (c) Ovaries (d) Placenta

(14).Approximately known species of eutheria:

(a) 4100 (b) 3700 (c) 3900 (d) 3800

(15).Eutherian species are classified into…….orders:

(a) 17 (b) 16 (c) 11 (d) 18

(16).Skin play role in:

(a) Excretion (b) Water regulation (c) Temperature regulation (d) All

(17).Hairs derived from:

(a) Epidermis of skin (b) Dermal

(18).A coat of hair is called as….

(a) Pelage (b) Plumage (c) Hair follicle (d) Contour

(19).Pelage is reduced in:

(a) Large mammals in cold climate (b) Large mammals in hot climate

(20).The pelage consist of……kinds of hairs:

(a) Five (b) Three (c) Two (d) Nine

(21).Hair is composed of largely……

(a) Small cells (b) Large cells (c) Living cells (d) Dead cells

(22). Hairs molted…..

(a) Periodically (b) After 15 years (c) Never (d) In adults

(23).Arctic for take a…..color with its autumn molt:

(a) White or cream (b) Black (c) Brown (d) Red

(24).Arctic for acquired a….pelage after spring molt:

(a) Grey and yellow (b) Black (c) Brown and yellow (d) only grey

(25).Hair is also important for…..

(a) Sense of smell (b) Pigmentation

(c) Sense of touch (d) Receptor

(26).Guard hairs are modified into shafted hairs called..

(a) Keratin (b) Arrector pili (c) Melanine (d) Vibrissae

(27).Hair color depends on the amount of pigment….

(a) Melanine (b) Keratin (c) Both A & B (d) None

(28).Arrector pili are bands of:

(a) Cardiac muscles (b) Smooth muscle (c) Light (d) Keratin

(29).Claws are used for:

(a) Locomotion (b) Excretion (c) Flying (d) Feeding

(30).Claws are formed by the accumulation of….

(a) Melanine (b) Keratin (c) Vibrissae (d) None

(31).Sebaceous glands also known as:

(a) Oil glands (b) Sweat glands (c) Eccrine glands (d) Olfactory glands

(32).Types of sudoriferous glands:

(a) Eccrine glands (b) Apocrine glands (c) Both A & b (d) None

(33).Eccrine glands secret:

(a) Oily secretion (b) Watery secretion (c) Ammonia (d) Urea

(34).Apcrine glands secret:

(a) Salt (b) Urea (c) Water (d) All

(35).Musk/scent glands secret:

(a) Pheromones (b) Oil (c) Water (d) Uric

(36).Mammary glands:

(a) Functional in female (b) Functional in males

(37).Mammary glands secrete:

(a) Pheromones (b) Oil (c) Water (d) Milk

(38).Mammary glands are derived from….

(a) Apocrine glands (b) Eccrine glands (c) Musk glands (d) Sebaceous glands

(39).Skull of mammals show……pattern:

(a) Fishes (b) Birds (c) Amphibians (d) Reptilian

(40).Method used to differentiate between reptiles and mammals:

(a) Jaw articulation (b) Teeth (c) Tail (d) forelimb

(41).Palate that completely separates nasal passage and from mouth cavity:

(a) Soft palate (b) Hard palate (c) Both A & B (d) None

(42).Breathing is stopped only during…

(a) Chewing (b) Eating (c) Digesting (d) Swallowing

(43).All of the following are characteristics of member of class mammalian except one. Select the exception:

(a) Mammary glands (b) Hair (c) Homodont teeth (d) Sweat, sebaceous

(44).Scientists thinks that early synapsids were likely:

(a) Oviparous (b) Ovoviviparous (c) Viviparous (d) None of these

(45).There are roughly….described mammal species.

(a) 950 (b) 5400 (c) 37,750 (d) 425,000

(46).Which of the following is an example of a monotreme?

(a) Porcupine (b) Grizzly bear (c) Ground squirrel (d) Duck billed

(47).Members of the order chiroptera include the:

(a) Rats and mice (b) Rabbits (c) Bats (d) Armadillos

(48).Member of the order Perissodactyla include the”

(a) Elephants (b) Deer and cattle (c) Horse and zebras (d) dogs and cats

(49).The echidna and the duck-billed platypus are member of infraclass:

(a) Prototheria (b) Ornithodelphia (c) Metatheria (d) Eutheria

(50).Member of the infraclass Ornithodelphia are characterized by:

(a) A chorioallantoic placenta (b) Ovoviviparous development

(51).Which of the following glands are associated with hair follicles and function lubricates and waterproof the skin?

(a) Sudoriferous glands (b) Sebaceous glands

(52).Which of the following kinds of mammals teeth are usually modified for gnawing or nipping?

(a) Incisors (b) Canines (c) Premolars (d) Molars

(53).A dental formula of 2.1.3/2.1.2.3 indicates that this mammal has a total of….molars?

(a) 0 (b) 6 (c) 8 (d) 12

(54).In fetal mammalian circulation blood in the….is most highly oxygenated.

(a) Pulmonary vein (b) Pulmonary artery (c) Aorta (d) Umbilical vein

(55).In adult mammalian circulation blood in the….is most highly oxygenated.

(a) Pulmonary artery (b) Pulmonary vein (c) Anterior vena (d) posterior

(56).A diaphragm is present in:

(a) Birds and mammals (b) Reptiles, birds, mammals

(c) Mammals only (d) Birds and reptiles

(57).The ability of the mammalian kidney to produce urine that is more concentrated with urea and salts than the blood is a result of the function of the:

(a) Glomerulus (b) Glomerular capsule

(c) Loop of the nephron (d) Collecting duct

(58).The…is a time during which the female is behaviorally and physiologically receptive to the male.

(a) Menstrual cycle (b) Ovarian cycle (c) Estrus cycle (d) Uterine cycle

(59).Inn mammals the sloughing of the uterine lining called:

(a) Monestrus (b) Polyester (c) Menses (d) None

(60).Store sperms in uterus for:

(a) 2 months (b) 3 months (c) 1 months (d) 1 week

(61).In marsupials uterine cells secret:

(a) Uterine milk (b) Glands (c) Blood (d) None

(62).In marsupials yolk sac make contact with uterus this connection is called..

(a) Yolk connection (b) Placental connection (c) Prmitive placenta (d) All

(63).1 Gestation period in rodents:

(a) 20 days (b) 15 days (c) 25 days (d) 40 days

(64).The mammals have only a single estrus cycle. These mammals called:

(a) Diestrus (b) Monestrus (c) Polyestrus (d) None

(65).The mammals have many estrus cycle are called:

(a) Polyestrus (b) Diestrus (c) Monestrus (d) All

(66).The cycle which involves the periodic proliferation of inner lining of the uterus and maturation of egg accompanied by menses if fertilization is not occur;

(a) Menstrual cycle (b) Estrus cycle (c) Both A & B (d) None

(67).The feces of kangaroo rat are:

(a) Almost wet (b) Almost dry (c) Both (c) None

(68)…….are used as recognized member of the same specie or member of the opposite sex:

(a) Oxytocin (b) Growth hormones (c) Pheromones (d) All

(69).The young of many mammalian species recognize their parents by:

(a) Smell (b) Touch (c) Taste (d) None

(70)…….is a time in which the female is behaviorally and physiologically become receptive to male..

(a) Estrus (b) Menstrual (c) Menses (d) All

(71).Excretion in mammals is a major source of…

(a) Salt loss (b) water loss (c) Salt gain (d) Water gain

(72).Mammals have which type of kidney:

(a) Primitive kidney (b) Ancestral kidney (c) Metanephric kidney (d) None

(73).The nephron of cell contain group of capillary like vessels called..

(a) Biomass capsule (b) Glomerulus (c) Tubules system (d) None

(74).The austration hopping mice produce urine…more concentrated than blood:

(a) 30 times (b) 40 times (c) 22 times (d) 33 times

(75). The age of reptiles is:

(a) Jurassic period (b) Tertiary period (c) Secondary period (d) Triassic period

(76).Early synapsids were:

(a) Pelycosaurs (b) Therapsids (c) Parapsids (d) None

(77).Diastema is present in:

(a) Cynodonts (b) Herbivore (c) Carnivores (d) All

(78).Monotremes are placed in:

(a) Prototheria (b) Metatheria (c) Eutheria (d) Ornithodelphia

(79).Pouched mammals belongs to:

(a) Prototheria (b) Metatheria (c) Ornithodelphia (d) Eutheria

(80).Placental mammals are:

(a) Ornithodelphia (b) Eutheria (c) Metatheria (d) Prototheria

(81).Number of order of eutheria are:

(a) 13 (b) 15 (c) 17 (d) 19

(82).The extinct mammals are present in:

(a) Prototheria (b) Metatheria (c) Eutheria (d) Ornithodelphia

(83).A coat of hair is called:

(a) Fur (b) Skin (c) Vibrissae (d) Pelage

(84).Claws are formed by the accumulation of:

(a) Chitin (b) Cutin (c) Keratin (d) Silica

(85).Sweat glands are:

(a) Sebaceous glands (b) Sudoriferous glands

(86).Small sudoriferious glands are:

(a) Sebaceous glands (b) Eccrine glands (c) Scent glands (d) Apocrine

(87).The glands which secret pheromones are:

(a) Sebaceous glands (b) Eccrine glands

(c) Scent glands (d) Apocrine

(88).The broad chewing surface is present in:

(a) Incisors (b) Canines (c) Premolar (d) Molar

(89).The chisel shaped teeth are:

(a) Molar (b) Canines (c) Premolar (d) Incisors

(90).The teeth with truncated surface for chewing:

(a) Canines (b) Incisors (c) Premolar (d) Molar

(91).Teeth are absent in:

(a) Herbivores (b) Edentata (c) Carnivores (d) Omnivores

(92).The mammals with flat grinding posterior teeth are:

(a) Herbivores (b) Edentata (c) carnivores (d) Omnivores

(93).Carnassials apparatus is present in:

(a) Herbivores (b) Edentata (c) Carnivores (d) Omnivores

(94).Number of neck vertebrae in mammals are:

(a). 5 (b) 6 (c) 7 (d) 8

(95).Number of vertebrae in manatees are:

(a) 5 (b) 6 (c) 7 (d) 8

(96).Interlocking process are present in the vertebrae:

(a) Cervical (b) Lumbers (c) Thoracic (d) Caudal

(97).Tail vertebrae are:

(a) Cervical (b) Lumbers (c) Thoracic (d) Caudal

(98).Cochlea is present in:

(a) External ear (b) Internal ear (c) Middle ear (d) None

(99).Ear pinna is a part of:

(a) External ear (b) Internal ear (c) Middle ear (d) None