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The ‘Devonian period’ is considered to be as
Biology Class 12th NEET UG NEET UG Preparation
Q. 22 of Quiz-1453 (Que-ID : 3315)
The ‘Devonian period’ is considered to be as
- age of fishes
- age of amphibians
- age of reptiles
- age of mammals
Ans → (a)age of fishes
Explanation → The ‘Devonian period’ is considered to be as age of fishes.
This question is taken from this post → Evolution : class 12th biology practice test | MCQs for NEET - attemp/practice
More MCQs in - Evolution : class 12th biology practice test | MCQs for NEET
Q. 1 of Quiz-1453 (Que-ID : 3294)
Which one of the following phenomena supports Darwin’s concept of natural selection in organic evolution ?
- Development of transgenic animals
- Production of “Dolly’, the sheep by cloning
- Prevalence of pesticide resistant insects
- Development of organs from ‘stem cells’ for organ transplantation.
Q. 2 of Quiz-1453 (Que-ID : 3295)
The phenomenon ‘ontogeny repeats phylogeny’ is explained by
- recapitualtion theory
- Inheritcance theory
- mutation theory
- natural selection theory.
Q. 3 of Quiz-1453 (Que-ID : 3296)
The presence of gill slits, in the embryos of vertebrates, supports the theory of
- metamorphosis
- biogenesis
- organic evolution
- recapitulation
Q. 4 of Quiz-1453 (Que-ID : 3297)
Which is not a vestigial organ in man ?
- Nictitating membrane
- Tail vertebrae
- Vermiform appendix
- Nails
Q. 5 of Quiz-1453 (Que-ID : 3298)
Which one is not a vestigia organ ?
- Wings of kiwi
- Coccyx in man
- Pelvic girdle of python
- Flipper of seal
Q. 6 of Quiz-1453 (Que-ID : 3299)
By the statement ‘survival of the fittest’, Darwin meant that
- the strongest of all species survives
- the most intelligent of the species survives
- the cleverest of the species survives
- the species most adaptable to changes survives.
Q. 7 of Quiz-1453 (Que-ID : 3300)
Which of the following are the two key concepts of Darwinian theory of evolution ?
- Genetic drift and mutation
- Adaptive radiation and homology
- Mutation and natural selection
- Branching descent and natural selection
Q. 8 of Quiz-1453 (Que-ID : 3301)
According to Lamarckism, long necked giraffes evolved because
- nature selected only long necked ones
- humans preferred only long necked ones
- short necks suddenly changed into long necks
- of stretching of necks over many generations by short necked ones.
Q. 9 of Quiz-1453 (Que-ID : 3302)
Which of the following evidences does not favour the Lamarckian concept of inheritance of acquired characters ?
- Lack of pigment in cave-dwelling animlas
- Melanisation in peppered moth
- Absence of limbs in snakes
- Presence of webbed toes in aquatic birds
Q. 10 of Quiz-1453 (Que-ID : 3303)
“Human population grows in geometric ratio while food materials increase in arithmetic proportion”. It is a statement from
- Darwin
- Bateson
- AmartyaSen
- Malthus.
Q. 11 of Quiz-1453 (Que-ID : 3304)
Which one of the following scientist’s name is correctly matched with the theory put forth by him ?
- de Vries – Theory of natural selection
- Darwin – Theory of pangenesis
- Weismann – Theory of continuity of germplasm
- Pasteur – Theory of inheritance of acquired charcters
Q. 12 of Quiz-1453 (Que-ID : 3305)
Single step large mutation leading to speciation is also called
- founder effect
- saltation
- branching descent
- natural selection
Q. 13 of Quiz-1453 (Que-ID : 3306)
Hardy-Weinberg equilibrium is known to be affected by gene flow, genetic drift mutation, genetic recombination and
- evolution
- limiting facrtors
- saltation
- natural selection
Q. 14 of Quiz-1453 (Que-ID : 3307)
The Hardy-Weinberg principle cannot operate if
- a population does not migrate for a longtime to a new habitat
- frequent mutations occur in the population
- the population has no chance of interaction with other populations
- free interbreeding occurs among all members of the population
Q. 15 of Quiz-1453 (Que-ID : 3308)
Genetic drift operates only in
- larger populations
- Mendelian populations
- island populations
- smaller populations.
Q. 16 of Quiz-1453 (Que-ID : 3309)
Which of the following statements is True ?
- Wings to birds and insects are homologous organs.
- Human hands and bird’s wings are analogous organs
- Human hands and bat’s wings are analogous organs.
- Flipper of penguin and dolphin are analogous organs
Q. 17 of Quiz-1453 (Que-ID : 3310)
Replacement of the lighter-coloured variety of peppered moth (Biston betularia) to its darker variety (Biston carbonaria) in England is the example of
- natural selection
- regeneration
- genetic isolation
- temporal isolation
Q. 18 of Quiz-1453 (Que-ID : 3311)
Phenomenon of ‘industrial melanism’ demonstrates
- geographical isolation
- reproductive isolation
- natural selection
- induced mutation
Q. 19 of Quiz-1453 (Que-ID : 3312)
presence of gills in the tadpole of frog indicated that
- fishes were amphibious in the past
- fishes evolved from frog-like ancestors
- frogs will have gills in future
- frogs evolved from gilled ancestors
Q. 20 of Quiz-1453 (Que-ID : 3313)
The character that proves that frogs have evolved from fishes is
- their ability to swim in water
- tadpole larva in frogs
- similarity in the shape of the head
- their feeding on aquatic plants
Q. 21 of Quiz-1453 (Que-ID : 3314)
Which is the correct order of increasing geological time scale for a hypothetical vertebrate evolution ?
- Cenozoic, Mesozoic, Palaeozoic, Proterozoic
- Cenozoic, Palaeozoic, Mesozoic, Proterozoic
- Proterozoic, Cenozoic, Palaezoic, Mesozoic
- Proterozoic, Palaeozoic, Mesozoic, Cenozoic
Q. 22 of Quiz-1453 (Que-ID : 3315)
The ‘Devonian period’ is considered to be as
- age of fishes
- age of amphibians
- age of reptiles
- age of mammals
Q. 23 of Quiz-1453 (Que-ID : 3316)
Amphibians were dominant during _______ period.
- Carboniferous
- Silurian
- Ordovician
- Cambrian
Q. 24 of Quiz-1453 (Que-ID : 3317)
The primate which existed 15 mya was
- Homo habilis
- Australopithecus
- Ramapithecus
- Homo erectus
Q. 25 of Quiz-1453 (Que-ID : 3318)
The extinct stone ancestor, who ate only fruits and hunted with stone weapons was
- Ramapithecus
- Australophecus
- Dryopithecus
- Homo erectus
More MCQs In - Biology Class 12th NEET UG NEET UG Preparation
Q. 7 of Quiz- (Que-ID : 2850)
During microsporogenesis, meiosis occurs in
- endothecium
- microspore mother cells
- microspore tetrads
- pollen grains
Q. 22 of Quiz- (Que-ID : 3190)
The most abundant type of animal tissue in the complex animals is
- Muscle tissue
- Nervous tissue
- Connective tissue
- Epithelial tissue
Q. 15 of Quiz- (Que-ID : 3258)
Bed Bugs contribute to the spread of
- Typhoid
- Yellow fever
- Typhus
- Trench fever
Q. 24 of Quiz- (Que-ID : 2942)
Experimental verification of ‘chromosomal theory of inheritance’ was done by
- Sutton and Boveri
- Morgan et al
- Henking
- Karl Correns
Q. 19 of Quiz- (Que-ID : 3537)
Act formulated in 1996 was
- Insecticide Act
- Air (Prevention and Control of Pollution) Act
- Water (Prevention and control of Pollution) Act
- Environment protection Act
Q. 3 of Quiz- (Que-ID : 2771)
The ozone layer is found in the
- Hydrosphere
- Stratosphere
- Lithosphere
- Troposphere
Q. 14 of Quiz- (Que-ID : 3157)
With reference to enzymes, which one of the following statements is true?
- Apoenzyme = Holoenzyme + Coenzyme
- Coenzyme = Apoenzyme + Holoenzyme
- Holoenzyme = Apoenzyme + Coenzyme
- Holoenzyme = Coenzyme – Apoenzyme
Q. 10 of Quiz- (Que-ID : 2978)
Each kidney has how many nephrons
- 1 million
- 2 million
- 2 thousand
- 2 hundred
Q. 9 of Quiz- (Que-ID : 3527)
Nutrient enrichment of water bodies causes
- Stratification
- Eutrophication
- Succession
- None of these
Q. 20 of Quiz- (Que-ID : 3313)
The character that proves that frogs have evolved from fishes is
- their ability to swim in water
- tadpole larva in frogs
- similarity in the shape of the head
- their feeding on aquatic plants
Q. 14 of Quiz- (Que-ID : 2907)
Bartholin’s glands are situated
- on the either side of vagina in humans
- on either side of vas deferens in humans
- on either side of penis in humans
- on either side of Fallopian tube in humans
Q. 23 of Quiz- (Que-ID : 3341)
Elephantiasis, a chronic inflammation that results in gross deformities is caused by
- Ascaris
- E.coli
- Wuchereria
- Trichophyton
Q. 19 of Quiz- (Que-ID : 3312)
presence of gills in the tadpole of frog indicated that
- fishes were amphibious in the past
- fishes evolved from frog-like ancestors
- frogs will have gills in future
- frogs evolved from gilled ancestors
Q. 4 of Quiz- (Que-ID : 3447)
The number of birth during a given period in the population that are added to the initial density is referred to
- Natality
- Mortality
- Sex-ratio
- None of the above
Q. 12 of Quiz- (Que-ID : 3530)
Which one of the following is not a greenhouse gas?
- Methane
- CO2
- Chlorofluoro carbon
- Hydrogen
Q. 9 of Quiz- (Que-ID : 1971)
Circulation of blood was discovered by-
- Darwin
- Harvey
- Aristotle
- Pasteur
Q. 22 of Quiz- (Que-ID : 2965)
Find out the wrong statement about heterochromatin,
- It is densely packed
- It stains dark
- It is transcriptionally active.
- It is late replicating
Q. 18 of Quiz- (Que-ID : 3286)
Bryophytes are called amphibians of plant kingdom because
- These plants live in soil and depend on marine organisms for asexual reproduction
- These plants live in soil and depend on water for sexual reproduction.
- These plants live in water and depend on land animals for sexual reproduction
- These plants live near water bodies.
Q. 1 of Quiz- (Que-ID : 2614)
Each tooth is embedded in a socket of jaw bone known as
- Thecodont
- Diphyodont
- Heterodont
- None of the above
Q. 14 of Quiz- (Que-ID : 3332)
A protein or polysaccharide molecule that stimulates antibody formation.
- antigen
- antibiotics
- exotoxin
- endotoxins
Q. 15 of Quiz- (Que-ID : 3058)
A characteristic of drupe is
- fleshy seed coat
- stony pericarp
- stony mesocarp
- stony endocarp
Q. 23 of Quiz- (Que-ID : 2766)
Implantation of embryo and placentation is under control of
- FSH
- Estrogen
- Progesterone
- Estradiol
Q. 7 of Quiz- (Que-ID : 3100)
Chlorosis will occur if a plant is grown in
- dark
- shade
- strong light
- Fe – free medium
Q. 15 of Quiz- (Que-ID : 3408)
Triticale, first man made cereal crop, has been obtained by crossing wheat with:
- Rye
- Pearl millet
- Sugarcane
- Barley
Q. 21 of Quiz- (Que-ID : 3039)
Auxin is synthesised from in apical meristem from amino acid
- Isoleucine
- Methionine
- Niacin
- Tryptophan
Q. 5 of Quiz- (Que-ID : 3323)
Which of the following is the bacterial disease in humans ?
- Dysentery
- Malaria
- Plague
- Both (a) & (c)
Q. 22 of Quiz- (Que-ID : 3415)
Who discovered Restricted endonucleas enzymes?
- Smith and Nathane
- Baiger
- Waxman
- Fleming
Q. 24 of Quiz- (Que-ID : 3217)
Which of the following provide maximum mechanical strength to a tree trunk.
- Heart wood
- Sap wood
- Cork
- Late wood
Q. 7 of Quiz- (Que-ID : 3075)
Oxidative phosphorylation refers to
- Anaerobic production of ATP
- The citric acid cycle production of ATP
- Production of ATP by chemiosmosis
- Alcoholic fermentation
Q. 19 of Quiz- (Que-ID : 2787)
Identify the incorrect match.
- Physiology ? Study of functions and processes of life
- Pedology ? Soil science
- Limnology ? Study of fresh water
- Kinesiology ? Fossil study
Q. 18 of Quiz- (Que-ID : 3411)
Restriction endonuclease cuts
- One stand of DNA at specific site
- Both strands of DNA
- Both strands of DNA at any site
- Single strand of RNA
Q. 1 of Quiz- (Que-ID : 2869)
IUDs prevent pregnancy by
- inhibiting physiological and morphological uterine changes required for implantation
- increasing phagocytosis of spermatozoa within uterus
- suppressing motility of sperms as well as their fertilising capacity
- all of these
Q. 18 of Quiz- (Que-ID : 3111)
Which element is required for opening and closing of stomata?
- P
- K
- Ca
- Na
Q. 2 of Quiz- (Que-ID : 3520)
In Ozone Degradation which element acts as catalyst?
- Chlorine
- Flurine
- Oxygen
- Potassium
Q. 3 of Quiz- (Que-ID : 3471)
Plant roots soil water is
- Cellular water
- Surface water
- Humidity water
- Gravitational water
Q. 12 of Quiz- (Que-ID : 2955)
The amino acid attaches to the tRNA at its
- 5’- end
- 3’ – end
- anticodon site
- DHUloop.
Q. 4 of Quiz- (Que-ID : 2797)
The cutaneous plexus and the papillary plexus consist of
- Specialized cells for cutaneous sensations
- A network of arteries to provide dermal supply
- A network of nerves to provide dermal sensation
- Gland cells that release cutaneous secretions
Q. 5 of Quiz- (Que-ID : 3123)
Which of the following is decreased during increase in humidity in the atmosphere?
- Transpiration
- Photosynthesis
- Respiration
- Glycolysis
Q. 2 of Quiz- (Que-ID : 3495)
Lion-tailed Macaque is found in:
- Western Ghats
- Caucasus
- Eastern Ghats
- Western Himalaya
Q. 18 of Quiz- (Que-ID : 3486)
The average efficiency of energy transfer from herbivoure to carnivorce level is
- 5%
- 10%
- 20%
- 30%
Q. 18 of Quiz- (Que-ID : 2911)
In humans, at the end of the first meiotic division, the male germ cells differentiate into the
- spermatids
- spermatogonia
- primary spermatocytes
- secondary spermatocytes
Q. 1 of Quiz- (Que-ID : 3169)
Blood corpuscles are formed in the
- Haversian canal
- endosteum
- red bone marrow
- pancreas
Q. 8 of Quiz- (Que-ID : 2951)
In some viruses, DNA is synthesised by using RNA as template. Such a DNA is called
- A – DNA
- B – DNA
- cDNA
- rDNA
Q. 6 of Quiz- (Que-ID : 2974)
Flame cells or protonephridia are NOT excretory structure of
- Planaria
- Annelids
- Cockroach
- Rotifers
Q. 13 of Quiz- (Que-ID : 2831)
The male gametes of rice plant have 12 chromosomes in their nucleus. The chromosome number in the female gamete, zygote and the cells of the seedling will be, respectively
- 12, 24, 12
- 24, 12, 12
- 12, 24, 24
- 24, 12, 24
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