Ozone Layer Depletion
1. Good ozone is found in the
(a) stratosphere
(b) ionosphere
(c) troposphere
(d) mesosphere
Answer: (a)
.png)
2. This is not the consequence of ozone layer depletion
(a) malignant melanoma – skin cancer type
(b) increased ultraviolet radiations
(c) tides
(d) cyanobacteria are sensitive to UV rays and would be affected by its increase
Answer: (c)
3. Greenhouses gases causing a rise of 3℃ rise in the overall global temperature in the past century are CFCs. The CFC used in refrigerators is
(a) Ammonia
(b) Freon
(c) Methane
(d) carbon dioxide
Answer: (b)
4. Main cause of ozone holes and its depletion is
(a) propellants
(b) foam-blowing agents
(c) halocarbon refrigerants
(d) all of these
Answer: (d)
5. Ozone can be destroyed by the following free radical(s)
(a) chlorine radical (Cl)
(b) hydroxyl radicals (OH)
(c) nitric oxide radical (NO)
(d) all of these
Answer: (d)
6. Following form(s) of oxygen is/are involved in ozone-oxygen cycle
(a) triatomic oxygen (O3)
(b) diatomic oxygen (O2)
(c) atomic oxygen (O)
(d) all of these
Answer: (d)
7. Ozone-depleting substance chiefly utilized in
(I) chimneys
(II) all of the human activities
(III) burning fossil fuels
(IV) cooling and refrigeration applications and in the manufacturer of foam products
(a) All
(b) Only IV
(c) Only I, II and III
(d) Only I and II
Answer: (b)
8. Montreal protocol is related to the
(a) food security
(b) global warming
(c) sustainable development
(d) ozone layer depletion
Answer: (d)
9. This is a major risk linked with extreme ultraviolet rays through the atmosphere as a result of ozone layer depletion
(a) neurological disorder
(b) digestive system gets damaged
(c) increased liver cancer
(d) increased skin cancer
Answer: (d)
10. UV rays is higher in summer as
(a) during summer, ozone is more in the atmosphere
(b) sun is busy in summer specially
(c) sun is closer to planet earth so UV rays have a shorter distance to travel and reach us
(d) none of the above
Answer: (c)
Ecological Succession
1. In ecological succession, the intermediate developmental phase is known as
(a) ecesis
(b) climax
(c) nudation
(d) sere
Answer: (d)
2. This is true about secondary succession
(a) follows primary succession
(b) takes place on a deforested site
(c) is similar to primary succession except that it has a relatively slower pace
(d) begins on a bare rock
Answer: (b)
3. Lithosphere serves as a reservoir for
(a) nitrogen cycles
(b) carbon cycles
(c) oxygen cycles
(d) phosphorus cycles
Answer: (d)
4. This is not a climax vegetation
(a) grasses
(b) savannah
(c) forests
(d) hydrophytes
Answer: (d)
5. This about ecological succession is incorrect
(a) food chain relationships become more complex
(b) species diversity increases as succession proceeds
(c) role of decomposers becomes all the more important
(d) is a random process
Answer: (d)
6. An example of plants occupying the second stage of hydrosere is
(a) Salix
(b) Vallisneria
(c) Azolla
(d) Typha
Answer: (b)
7. On the sand, ecological succession is
(a) halosere
(b) xerosere
(c) hydrosere
(d) psammosere
Answer: (d)
8. Order of basic processes involved in succession is
(a) invasion -> stabilization -> completion and coaction -> reaction -> nudation
(b) nudation -> stabilization -> completion and coaction -> invasion -> reaction
(c) invasion -> nudation -> completion and coaction -> reaction -> stabilization
(d) nudation -> invasion -> completion and coaction -> reaction -> stabilization
Answer: (d)
9. Process of the successful establishment of species in a new area is known as
(a) climax
(b) sere
(c) ecesis
(d) invasion
Answer: (c)
10. In ecological succession, the final stable community is known as
(a) climax community
(b) ultimate community
(c) final community
(d) seral community
Answer: (a)
1. This is a major reason for infertility in women
(a) Anovulation
(b) Weight
(c) Age
(d) All of these
Answer: (d)
2. Boosting the intake of _________ can help women trying to conceive
(a) Potassium
(b) Folic acid
(c) Lycopene
(d) Nickel
Answer: (b)
3. Nerve supply of ovary is through
(a) Sacral fibers
(b) Pudendal nerve
(c) Branches of renal and aortic plexus
(d) none of the above
Answer: (c)
4. Menstrual phase bleeding is due to
(a) necrosin
(b) fibrinolysis
(c) menotoxin
(d) vasoconstriction and ischaemia
Answer: (d)
5. Fertility in women is impaired by
(a) Hernia
(b) High blood pressure
(c) Obesity
(d) Gallstones
Answer: (c)
6. Infertility is when a couple fails to conceive after
(a) 4 years of unprotected sex
(b) 3years of unprotected sex
(c) 2 years of unprotected sex
(d) 1 year of unprotected sex
Answer: (d)
7. Procedures used to treat infertility are
(a) ICSI – Intracytoplasmic Sperm Injection
(b) IVF – In Vitro Fertilization
(c) IUI – Intrauterine insemination
(d) All of these
Answer: (d)
8. Right ovarian artery arises from
(a) Uterine artery
(b) Aorta
(c) Renal artery
(d) Common iliac artery
Answer: (b)
9. This condition impairs infertility
(a) PCOD
(b) Fibroids
(c) Endometriosis
(d) All of these
Answer: (d)
10. In women, this sexually transmitted disease can result in infertility
(a) Human papillomavirus (HPV)
(b) Pelvic inflammatory disease
(c) Genital herpes
(d) None of the above
Answer: (b)
Implantation and Gastrulation
1. Which of the following organ is formed during gastrulation?
(a) Gill
(b) Vitelline membrane
(c) Heart
(d) Archenteron
Answer: (d)
2. Mesoderm gives rise to all the structures except ______.
(a) Gonads
(b) Circulatory system
(c) Nervous system
(d) Muscular system
Answer: (c)
3. In human females, the fertilized eggs get implanted in the uterus after ________.
(a) One month of fertilization
(b) Two months of fertilization
(c) Seven days of fertilization
(d) Three weeks of fertilization
Answer: (c)
4. Brain, nerve cells and spinal cord or the central nervous system develops from embryonic ______.
(a) Mesoderm
(b) Endoderm
(c) Ectoderm
(d) Both (b) and (c)
Answer: (c)
5. Which of the following options contains only the mesodermal structures?
(a) Heart, blood, bones, notochord
(b) Heart, blood, muscles, liver
(c) Notochord, blood, liver, muscles
(d) Liver, heart, bones, blood
Answer: (a)
6. Implantation is the process of__________.
(a) Attachment of blastocyst to the uterine wall
(b) Egg movement
(c) Degeneration of egg
(d) Egg fertilization
Answer: (a)
7. Which of the following embryo has a parasitic mode of nutrition?
(a) Mammalian embryo
(b) Bird’s embryo
(c) Amphibian embryo
(d) Reptilian embryo
Answer: (a)
8. which of the following events is likely to take place, if the nuclei from an 8-celled stage of an embryo are transplanted into enucleated eggs?
(a) Recipient egg dies
(b) Donor nuclei die in the new environment
(c) Cleavage occurs but is arrested after some time
(d) Formation of the viable embryo in the recipient eggs
Answer: (d)
9. Egg implantation is followed by______.
(a) Parturition
(b) Copulation
(c) Fertilization
(d) Gestation
Answer: (d)
10. Pseudopregnancy is a physiological condition, comparable to normal pregnancy except that there is no__________.
(a) endometrial changes
(b) developing foetus
(c) corpus luteum
(d) developing ovum
Answer: (b)
Cleavage Biology
1. This is also known as meroblastic cleavage
(a) Partial
(b) Unequal holoblastic
(c) Equal holoblastic
(d) Superficial
Answer: (a)
2. The type of cleavage found in insects
(a) Holoblastic
(b) Discoidal
(c) Superficial
(d) Meroblastic
Answer: (c)
3. Discoidal and superficial are which types of cleavage?
(a) Unequal holoblastic
(b) equal holoblastic
(c) both (a) and (b)
(d) Meroblastic
Answer: (d)
4. If the first cleavage furrow divides zygote completely into two, the cleavage type is
(a) meroblastic
(b) holoblastic
(c) equatorial
(d) radial
Answer: (b)
5. The only human system that is derived from all the three germ layers is
(a) Nervous system
(b) Digestive system
(c) Respiratory system
(d) Excretory system
Answer: (b)
6. The fertilized egg divides by the process of
(a) Oogenesis
(b) Cleavage
(c) Regeneration
(d) Invagination
Answer: (b)
7. If an unfertilized egg is pricked with a microneedle, it will
(a) transform into a tadpole at a faster rate
(b) die immediately
(c) will remain undivided
(d) start dividing
Answer: (d)
8. A freshly unfertilized egg of hen contains
(a) 10,000 cells
(b) 1,000 cells
(c) 100 cells
(d) one cell
Answer: (d)
9. How many cleavages are completed in the 16-celled stage of an egg?
(a) 12
(b) 8
(c) 4
(d) 3
Answer: (c)
10. The spindle in the determinate cleavage is
(a) Horizontal
(b) Oblique
(c) Vertical
(d) Sub-equatorial
Answer: (b)
1. This is not the function of plasma membrane
(a) Energy transduction
(b) Intercellular interactions
(c) Responding to external stimuli
(d) Assisting in chromosome segregation
Answer: (d)
2. In the plasma membrane, carbohydrates
(a) always faces outwards, towards extracellular space
(b) directed to all sides in the membrane randomly
(c) always faces to the lumen of cells
(d) always faces inward to the nonpolar portion of the membrane
Answer: (a)
3. In the plasma membrane, Glycolipids are usually situated in
(a) cannot be predicted, it varies according to the cell types
(b) inner leaflet of the plasma membrane
(c) the outer leaflet of the plasma membrane
(d) evenly distributed in both outer and inner leaves of plasma membrane
Answer: (c)
4. The major interaction responsible for stabilizing plasma membrane
(a) hydrophobic interactions
(b) hydrophilic interactions
(c) covalent bonds
(d) ionic bonds
Answer: (a)
5. In the plasma membrane, lipid molecules are arranged in
(a) head parallel
(b) alternate
(c) scattered
(d) series
Answer: (a)
6. Ion carriers are located in
(a) Plasma membranes
(b) Cell wall
(c) Nucleus
(d) Cellular space
Answer: (a)
7. In the plasma membrane, the best method to study the properties of integral membrane proteins is
(a) atomic force microscopy
(b) freeze-fracture analysis and electron microscopy
(c) cryo-sectioning and electron microscopy
(d) all of the above
Answer: (b)
8. In the plant cell, this layer is present nearest to the plasma membrane
(a) Tonoplast
(b) Middle lamella
(c) secondary wall
(d) primary wall
Answer: (c)
9. Beetroot, if kept in cold water, anthocyanin does not come out due to plasma membrane
(a) Dead
(b) differentially permeable
(c) permeable to anthocyanins
(d) Impermeable to anthocyanins
Answer: (d)
10. Plasma membrane is made up of
(a) A protein, a lipid and a cellulose layer
(b) Bimolecular lipid layer surrounded by protein layers
(c) A protein layer between two lipid layers
(d) A lipid layer between two protein layers
Answer: (b)
1. Collenchymatous hypodermis is characteristics of
(a) Hydrophytes
(b) Monocot and dicot stem
(c) Monocot stem
(d) Dicot stem
Answer: (d)
2. The lacunae in the vascular bundles of monocot stem is
(a) Metaxylem
(b) A mucilage canal
(c) Lysigenous water cavity
(d) A large sized protoxylem
Answer: (c)
3. The protoxylem in its midrid bundle in a vertical section of a dorsiventral leaf
(a) is not distinct
(b) faces the ventral epidermis of the leaf
(c) faces the dorsal epidermis of the leaf
(d) is surrounded by metaxylem
Answer: (c)
4. This is not a characteristic feature of anatomy of dicotyledonous root
(a) Pith little or absent
(b) Secondary growth
(c) Radial vascular bundles
(d) Vascular bundles 15-20
Answer: (d)
5. Vascular bundles are scattered in
(a) Dicot stem
(b) Dicot root
(c) Bryophytes
(d) Monocot stem
Answer: (d)
6. The correct situation of mesophyll in isobilateral grass leaf is shown by
(a) Palisade along both the surface
(b) Undifferentiated mesophyll
(c) Palisade towards abaxial surface
(d) Palisade towards adaxial surface
Answer: (b)
7. Well-developed pith is found in
(a) Monocot root and Dicot stem
(b) Dicot root and Dicot stem
(c) Dicot root and Monocot stem
(d) Dicot and Monocot stems
Answer: (a)
8. In monocot leaf
(a) Veins form a network
(b) Mesophyll is not differentiated into palisade and spongy parenchyma
(c) Mesophyll is well differentiated into these parts
(d) Bulliform cells are absent from epidermis
Answer: (b)
9. In orchids, Velamen tissues is found in
(a) Leaves
(b) Root
(c) Flowers
(d) Shoot
Answer: (b)
10. Polyarch and exarch vascular bundles occur in
(a) Dicot stem
(b) Monocot stem
(c) Dicot root
(d) Monocot root
Answer: (d)
Hormonal Control Digestion
1. Which of the following statement about Enterogastrone?
(a) The hormone secreted by the intestinal mucosa
(b) The hormone secreted by mucosa
(c) The hormone secreted by related to digestion
(d) The hormone secreted by the gastric mucosa
Answer: (a)
2. Juice containing sodium glycocholate is secreted under the influence of _______.
(a) Enterogastrone
(b) Cholecystokinin
(c) Enterokinin
(d) Secretin
Answer: (b)
3. Gall bladder contractions and Pancreatic secretion are triggered by_______
(a) Enterogastrone
(b) Enterocrinin
(c) Gastrin
(d) Cholecystokinin
Answer: (d)
4. Cholecystokinin hormone which is released from the intestinal epithelium triggers___.
(a) Release of bile from the gallbladder
(b) Conversion of protein to peptones
(c) Conversion of fats into glycerol
(d) Secretion of pancreatic juice
Answer: (a)
5. The hormone secretin triggers ______.
(a) Gallbladder
(b) Pancreas
(c) Crypts of Lieberkuhn
(d) Stomach
Answer: (b)
6. _________regulates the enzymatic quantity in pancreatic juice.
(a) Cholecystokinin
(b) Gastrin
(c) Pancreozymin
(d) Secretin
Answer: (c)
7. In a mammal, the release of pancreatic juice from the pancreas is triggered by ______.
(a) Cholecystokinin
(b) Trypsinogen
(c) Secretin
(d) Enterokinase
Answer: (c)
8. Which of the following secretes secretin hormone?
(a) Oesophagus
(b) Ileum
(c) Duodenum
(d) Stomach
Answer: (c)
9. The hormone gastrin is secreted by_______.
(a) Pancreas
(b) Liver
(c) Stomach
(d) Intestine
Answer: (c)
10. Secretion of gastric juice is controlled by ______.
(a) Cholecystokinin
(b) Gastrin
(c) Enterogastrone
(d) None of the above
Answer: (b)
Diabetes Mellitus and Cardiovascular Diseases
1. The probable cause of Erythroblastosis fetalis can be
(a) Bleeding
(b) Haemophilia
(c) Adjoining of RBC
(d) Diapedesis
Answer: (c)
2. This can help on the diagnosis of the genetic basis of a disorder
(a) PCR
(b) ELISA
(c) ABO blood group
(d) NMR
Answer: (a)
3. This measure does not help to prevent diabetes complications
(a) controlling blood lipids and blood pressure
(b) Prompt detection of diabetic eye and kidney disease
(c) Eliminating all carbohydrates from the diet
(d) controlling blood glucose
Answer: (c)
4. The disease as a result of prolonged clotting is due to lack of plasma thromboplastin component (PTC) necessary to the formation of thromboplastin, is
(a) Haemophilia
(b) Hypoprothrombinemia
(c) Christmas disease
(d) Stuart disease
Answer: (c)
5. This diabetes drug acts by decreasing the amount of glucose produced by the liver
(a) Alpha-glucosidase inhibitors
(b) Sulfonylureas
(c) Biguanides
(d) Meglitinides
Answer: (c)
6. Presence of RBC in urine is known as
(a) Proteinuria
(b) Hematuria
(c) Urolithiasis
(d) Nephritis
Answer: (b)
7. The disease characterized by extreme muscle weakness and brownish pigmentation of the buccal cavity and skin is
(a) Grave’s disease
(b) Myxoedema
(c) Addison’s disease
(d) Cushing’s disease
Answer: (c)
8. This statement regarding Angina is true
(a) blood flow is unaffected
(b) most common in children
(c) inadequate supply of oxygen to the heart muscles
(d) heart stops beating
Answer: (c)
9. Pick the wrongly matched pair
(a) heart failure – not enough blood supply to the body
(b) angina pectoris – acute chest pain
(c) cardiac arrest – narrowing of the lumen
(d) heart attack – not enough blood supply to cardiac muscles
Answer: (c)
10. This disease is not related to the circulatory system
(a) Diabetes mellitus
(b) Hypertension
(c) Diphtheria
(d) Coronary thrombosis
Answer: (c)
Self Evaluation Test Human Health and Disease
1. The low RBC count is seen in anaemia and ________.
(a) Myxoedema
(b) Influenza
(c) Typhoid
(d) Leukaemia
Answer: (d)
2. A child is suffering from Kwashiorkor and if this child is compared with other marasmus children then what additional symptoms are present in Kwashiorkor child?
(a) Oedema
(b) Wasted muscles
(c) A decrease in body weight
(d) Impaired physical growth
Answer: (c)
3. Chronic anaemia and multiple sclerosis are
(a) Allergic diseases
(b) Hormonal diseases
(c) Autoimmune diseases
(d) Hereditary diseases
Answer: (c)
4. Which one of the following statements is correct about T-lymphocytes in mammals?
(a) These are produced in the thyroid
(b) These are originated in lymphoid tissues
(c) They scavenge damaged cells and cellular debris
(d) There are three main types – cytotoxic T-cells, helper T-cells and suppressor T-cells
Answer: (b)
5. The antibody-dependent cytotoxicity is seen in ________.
(a) Local anaphylaxis
(b) Generalise anaphylaxis
(c) Immune complex reaction
(d) Non-compatible-blood transfusion
Answer: (d)
6. Which of the following protein causes the dilation of blood vessels?
(a) Histamine
(b) Pyrogens
(c) Interferon
(d) None of these
Answer: (a)
7. Parkinson’s disease is caused due to deficiency of ________.
(a) Dopamine
(b) GABA
(c) Acetylcholine
(d) Endorphins
Answer: (a)
8. Gaucher’s disease is linked with________.
(a) Malnutrition
(b) Abnormal fat metabolism
(c) Abnormal protein metabolism
(d) Abnormal carbohydrate metabolism
Answer: (b)
9. LSD is obtained from _______.
(a) Cannabis Sativa
(b) Claviceps purpurea
(c) Papaver somniferum
(d) Erythroxylon coca
Answer: (b)
10. Infectious proteins are present in ________.
(a) Prions
(b) Viroids
(c) Gemini viruses
(d) Satellite viruses
Answer: (a)
Yeast and Albugo
1. Yeast produces an enzyme complex, which is responsible for fermentation. Which is the enzyme complex?
(a) Zymase
(b) Dehydrogenase
(c) Aldolase
(d) Invertase
Answer: (a)
2. In yeast, the sexual reproduction is by conjugation. After fusion, the zygotic nucleus divides meiotically and forms haploid spores. The unicellular structure with haploid spores is
(a) Gametangium
(b) Zoosporangium
(c) Sporangium
(d) Ascus
Answer: (d)
3. The rising of dough is due to
(a) sulphur dioxide
(b) hydrogen
(c) carbon dioxide
(d) oxygen
Answer: (c)
4. In manufacture of bread, it becomes porous due to the liberation of CO2 by the action of
(a) Yeast
(b) Virus
(c) Protozoans
(d) Bacteria
Answer: (a)
5. The food reserve in Albugo usually is
(a) Fat
(b) Protein granules
(c) Glycogen
(d) Volutin granules
Answer: (c)
6. This statement on Albugo is incorrect
(a) Non-flagellated female gametes
(b) Biflagellated zoospores
(c) Biflagellated male gametes
(d) All of these
Answer: (c)
7. The species causing white rust of cruciferae has a botanical name, it is
(a) Pythium debaryanum
(b) Peronospora parasitica
(c) Albugo candida
(d) Puccinia graminis
Answer: (c)
8. Yeast is not included in protozoans but in fungi because
(a) it has eukaryotic organization
(b) cell wall is made up of cellulose and reserve food material as starch
(c) Some fungal hyphae grow in such a way that they give the appearance of pseudomycelium
(d) it has no chlorophyll
Answer: (a)
9. This is used in the preparation of alcohol
(a) Saccharomyces
(b) Acetobacter
(c) Lactobacillus
(d) Penicillium
Answer: (a)
10. Fungus without mycelium is
(a) Agaricus
(b) Albugo
(c) Puccinia
(d) Saccharomyces
Answer: (d)
.png)
.jpeg)
.png&description=Biology MCQs Test P 31){kind=link}
0 Comments