Description : Which one of the following statements is incorrect? (a) The principle of countercurrent flow facilitates efficient respiration in gills of fishes. (b) The residual air in lungs slightly decreases the ... in birds. (d) In insects, circulating body fluids serve to distribute oxygen to tissues.
Last Answer : (b) The residual air in lungs slightly decreases the efficiency of respiration in mammals.
Description : The ventilation movements of the lungs in mammals are governed by
Last Answer : The ventilation movements of the lungs in mammals are governed by A. Muscular wall of the ... C. Diaphragm D. Diaphragm and intercostal muscles
Description : The ventilation movements of the lungs in mammals are governed by (a) muscular walls of lung (b) diaphragm (c) intercostal muscles (d) both (b) and (c)
Last Answer : (d) both (b) and (c).
Description : Syrinx is the voice box in - (1) Amphibians (2) Reptiles (3) Birds (4) Mammals
Last Answer : (3) Birds Explanation: Syrinx is the name for the vocal organ of birds. Located at the base of a bird's trachea, it produces sounds without the vocal cords of mammals. The sound is ... the membrana tympaniformis (the walls of the syrinx) and the pessulus caused by air flowing through the syrinx.
Description : Classify the following animals are reptiles, mammals, birds and fish.
Last Answer : a) Blue whale----Mammals b) Cobra--------Reptile c) Panda--------Mammal d) Ostrich-------Bird e) Penguin------Bird f) Kiwi----------Bird g) Shark--------Fish h) Alligator -----Reptile i) Dolphin-------Mammal j) Tortoise------Reptile
Description : Which group of vertebrates comprises the highest number of endangered species? (a) Mammals (b) Fishes (c) Reptiles (d) Birds
Last Answer : (a) Mammals
Description : Uricotelism is found in (a) mammals and birds (b) fish and fresh water protozoans (c) birds, land reptiles and insects (d) frogs and toads.
Last Answer : (c) birds, land reptiles and insects
Description : Syrinx is the voice box in (1) Amphibians (2) Reptiles (3) Birds (4) Mammals
Last Answer : Birds
Description : (a) Draw a schematic representation of transport and exchange of oxygen and carbon dioxide during transportation of blood in human beings and label on it: Lung capillaries, Pulmonary artery to ... the advantage of separate channels in mammals and birds for oxygenated and deoxygenated blood? -Biology
Last Answer : (a) A schematic representation of transportation and exchange of oxygen and carbon dioxide during transportation of blood in human beings (b) It is necessary to separate oxygenated and deoxygenated ... . The separation of oxygenated and deoxygenated blood provides high oxygen supply to the organs.
Description : Which one of the following characteristics is not shared by birds and mammals? (a) Viviparity (b) Warm blooded nature (c) Ossified endoskeleton (d) Breathing using lungs
Last Answer : (a) Viviparity
Description : Compared to mammals do birds absorb more or less water in their digestive system? Why is this phenomenon an adaptation to flight?
Last Answer : Bird feces are more liquid than mammal feces, i.e., less water is absorbed in the avian digestive system. The more frequent elimination of feces in birds due to their less solid feces is an adaptation to flight since their body weight is kept lower.
Description : What are reptiles and mammals called and why ?
Last Answer : Animals that move with mass on their chest are called reptiles , snakes , crocodiles , lizards. Animals that drink mother's milk are called mammals. Humans , bats , whales
Description : Assertion : Lycaenops is a mammals - like reptile. Reason : Mammal - like reptiles originated in the Permian period.
Last Answer : Assertion : Lycaenops is a mammals - like reptile. Reason : Mammal - like reptiles originated in the ... D. If both Assertion and Reason are false.
Description : Are rhinos mammals or reptiles?
Last Answer : gfgn
Description : What is the connective link between reptiles and mammals?
Last Answer : duck billed platypus
Description : Are dinosaurs reptiles or mammals?
Last Answer : Dinosaurs are technically classed as reptiles. They were not related to mammals, but were more closely related to birds.
Description : What is the difference between mammals and reptiles?
Last Answer : reptiles are cold blooded and mammals are warm blooded.
Description : Dinosaurs were - (1) mammals that became extinct (2) large herbivorous creatures which gave rise to hippopotamus species (3) egg-laying mammals (4) reptiles that became extinct
Last Answer : (4) reptiles that became extinct Explanation: Although the word dinosaur means "terrible lizard," the name is somewhat misleading, as dinosaurs are not lizards. Rather, they represent a separate ... be dinosaurs, most of the scientific community believed dinosaurs to be sluggish and cold-blooded.
Description : Mention the differences between reptiles and mammals.
Last Answer : Reptiles 1. They have exoskeleton in the form of epidermal scales 2. Most of them have three chambered heart 3. They are cold blooded animals 4. They are oviparous animal soskeleton in form ... 2. They have four chambered heart 3. They are warm blooded animals 4. They are viviparous animals
Description : Which one of the following categories of animals, is correctly described with no single exception in it? (a) All reptiles possess scales, have a three chambered heart and are cold blooded ( ... marine and have collared cells. (d) All mammals are viviparous and possess diaphragm for breathing.
Last Answer : (b) All bony fishes have four pairs of gills and an operculum on each side
Last Answer : (b) All bony fishes have four pairs of gills and an operculum on each side.
Description : Choose the correct statement. (a) All mammals are viviparous. (b) All cyclostomes do not possess jaws and paired fins. (c) All reptiles have a three-chambered heart. (d) All pisces have gills covered by an operculum
Last Answer : (b) All cyclostomes do not possess jaws and paired fins.
Description : What term is used for animals such as humans that usually give birth to live young: mammals or reptiles?
Last Answer : MAMMALS
Description : Amongst the animal groups given below, which one appears to be more vulnerable to extinction? A. Insects B. Mammals C. Amphibians D. Reptiles
Last Answer : C. Amphibians
Description : The following argument: “ All mammals have wings. All reptiles are mammals. Therefore all reptiles have wings ”. A) Inductive B) invalid C) sound D) Valid.
Last Answer : D) Valid.
Description : Dinosaurs were (1) mammals that became extinct (2) large herbivorous creatures which gave rise to hippopotamus species (3) egg-laying mammals (4) reptiles that became extinct
Last Answer : reptiles that became extinct
Description : Among the following sets of salient features, which set does not exclusively characterize mammals? (1) Presence of sweat, glands, hairs on skin and diphyoclonts (2) Presence of mammary glands, sweat ... glands, sweat glands, and diaphragm (4) Presence of mammary glands, hairs on skin and diaphragm.
Last Answer : (3) Presence of mammary' glands, sweat glands, and diaphragm Explanation: Ayes are also worm blooded and their heart is four-chambered. Crocodiles (Reptilia) also have fourchambered heart.
Description : Among the following sets of salient features, which set does not exclusively characterize mammals? (1) Presence of sweat glands, hairs on skin and diphyodonts (2) Presence of mammary glands, sweat ... glands, sweat glands and diaphragm (4) Presence of mammary glands, hairs on skin and diaphragm.
Last Answer : Presence of mammary glands, sweat glands and diaphragm
Description : Archeopteryx a transitional fossil between birds and reptiles was discovered from the rocks of following period
Last Answer : Archeopteryx a transitional fossil between birds and reptiles was discovered from the rocks of following ... Archeozoic era C. Cretaceous D. Triassic
Description : Cause of decline in population of reptiles and birds is
Last Answer : Cause of decline in population of reptiles and birds is A. Bioinsecticides B. Biofertilizers C. DDT D. Both A and B
Description : A connecting/missing link between reptiles and birds is
Last Answer : A connecting/missing link between reptiles and birds is A. Archaeopteryx B. Platypus C. Java Ape man D. Whale
Description : $ Sulphur depended archaebacteria are called thermoacidophiles. ! Archeopteryx is considered to be a connecting link between Birds and Reptiles.
Last Answer : $ Sulphur depended archaebacteria are called thermoacidophiles. ! Archeopteryx is considered to be a connecting link ... . If both As and R are wrong.
Description : What do reptiles and birds have in common?
Last Answer : they both lay eggs.
Description : The end product of amino acid nitrogen metabolism in uricotelic organisms (reptiles and birds) is (A) Bilirubin (B) Urea (C) Uric acid (D) Biliverdin
Last Answer : Answer : C
Description : What is the chorioallantois membrane present in the embryonic development of reptiles and birds ?
Last Answer : How does this membrane participate in the energetic metabolism of the embryo? The chorioallantois membrane is formed by juxtaposition of some regions of the chorion and the allantois. Since it is ... of gases between the embryo and the exterior thus making aerobic cellular respiration possible.
Description : How different are reptiles and birds concerning the maintenance of body temperature? Are birds rare in polar regions?
Last Answer : Reptiles are heterothermic, i.e., they do not control their body temperature. Birds however are the first homeothermic animals, they are able to maintain their body temperature constant. There are many birds that live in intense cold regions. Penguins are examples of birds that live in polar region.
Description : What similarities do birds and reptiles share regarding external coverage, reproduction and excretion?
Last Answer : Regarding external coverage, birds are similar to reptiles as they present impermeable keratinized coverages. Concerning reproduction, in both fecundation is internal and the embryo develops within a shelled egg. Regarding excretion, both excrete uric acid.
Description : The population of which of the following is maximum on the earth? (1) Fishes (2) Beetles (3) Reptiles (4) Birds
Last Answer : (3) Reptiles Explanation: Fish as a community comprise the largest group on the earth as 72 percent of the worlds surface is covered with water. Fish are found from equatorial to polar climates; in salty or freshwater sources. It is assumed that life on the Earth began from fish.
Description : Jaws are absent in – (1) Birds (2) Fishes (3) Protochordates (4) Reptiles
Last Answer : (3) Protochordates Explanation: Jaws are absent in Protochordates.
Description : Bones are pneumatic in - (1) Fishes (2) Amphibians (3) Reptiles (4) Birds
Last Answer : (4) Birds Explanation: Pneumatic boneis is hollow bone filled with air, connected to the respiratory system. Many of a bird's bones are pneumatic, with struts across their ... , certain physical characteristics are required. Flying birds have evolved reduced weight through several characteristics.
Description : Uricotelic mode of excreting nitrogenous wastes is found in (a) reptiles and birds (b) birds and annelids (c) amphibians and reptiles (d) insects and amphibians.
Last Answer : (a) reptiles and birds
Description : Jaws are absent in : (1) Birds (2) Fishes (3) Protochordates (4) Reptiles
Last Answer : Protochordates
Last Answer : Reptiles
Description : Bones are pneumatic in (1) Fishes (2) Amphibians (3) Reptiles (4) Birds
Description : To avoid fire by spontaneous combustion of coal due to its low temperature oxidation, it should be stored in (A) Shallow and small piles (B) Fine sizes without the presence of any lump (C) Closed space without any ventilation facility (D) Large heaps with small surface to volume ratio
Last Answer : (A) Shallow and small piles
Description : The __________ of a double acting reciprocating pump as compared to the single acting pump will be almost double. (A) Flow output (B) Head developed (C) Overall efficiency (D) Weight
Last Answer : Option A
Description : A 45-year-old solicitor had an onset of severe, crushing, substernal chest pain while attending a football match. He collapsed on his way to the car. Bystander Cardiorespiratory Resuscitation ... His oxyhemoglobin curve is shifted to the left 5) His pulmonary artery pressure is probably elevated
Last Answer : Answers-5 This young patient with severe central chest pain has probably arrested due to myocardial infarction and arrhythmia. His gases reveal high PO2 following 100% O2 but severe acidosis ... no left to right shunting and high pulmonary pressures would be expected after this arrest scenario.
Description : In mammals, an important role of excretion is played by – (1) Large intestine (2) Kidneys (3) Lungs (4) Liver
Last Answer : (2) Kidneys Explanation: The kidneys are bean-shaped organs that serve several excretory roles apart from the essential regulatory roles in mammals. They remove from the blood the nitrogenous wastes ... of urine. In producing urine, the kidneys excrete nitrogenous wastes such as urea and ammonium.
Description : In mammals, an important role of excretion is played by – (1) Large intestine (2) Kidneye (3) Lungs (4) Liver
Last Answer : (2) Kidneye Explanation: The Kidneys are bean-shaped organs that serve several excretory roles apart from the essential regulatory roles in mammals.