Thursday, 4 April 2019

Biology MCQs PPSC Exams Quiz Preparation

Solve Quiz of developmental biology mcqs with answers here for the exam preparation. Mostly students want to get better marks in the PPSC exams. Many of the exams tests in which PPSC biology Multiple choice Questions are included biology MCQs. Here solved neet biology mcqs are also in pdf download by Dogar brothers and Dogar Sons Books MCQs. All MCQs listing is also in the Quiz test. MCAT exams preparation of biology mcqs pdf download here.

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Test 1 || Test 2 || Test 3 || Test 4 || Test 5 || Test 6 || Test 7 || Test 8 || Test 9 || Test 10 || Test 11 || Test 12 || Test 13 || Test 14 || Test 15 || Test 16 || Test 17 || Test 18 || Test 19 || Test 20 || Test 21 || Test 22 || Test 23 || Test 24 || Test 25

Biology MCQs Quiz Tests With Answers List


Question 1: The scientific study of livings is called ?

  1. Biology
  2. Anatomy
  3. Geology
  4. Zoology

A

Question 2: Functional unit of DNA Is--------- ?

  1. Nucleus
  2. Genes
  3. Chromosomes
  4. Nucleolus

B

Question 3: The experiments on DNA molecules in chromosomes for knowing the basis of inherited diseases are conducted by ?

  1. Molecular biologists
  2. Microbiologists
  3. Freshwater biologists
  4. Social biologist

A

Question 4: Normally, in the process of osmosis, the net flow of water molecules into or out of the cell depends upon differences in the ?

  1. Concentration of water molecules inside and outside the cell
  2. Concentration of enzymes on either side of the cell membrane
  3. Rate of molecular motion on either side of the cell membrane
  4. None of these

A

Question 5: Number of chromosomes in E.coli ?

  1. 1
  2. 2
  3. 4
  4. 6

A

Question 6: The number of species of organisms currently known to science is ?

  1. 3500000
  2. 35000
  3. 2500000
  4. 25000000

C

Question 7: Lactometer is used for-------- ?

  1. Ship
  2. Milk
  3. Honey
  4. None

B

Question 8: The main types of plastids are---------- ?

  1. chloroplasts
  2. chromoplasts
  3. leucoplasts
  4. all a,b,c

B

Question 9: Different species of plants and animals living in the same habitat is called --------- ?

  1. Population
  2. Community
  3. Biome
  4. Habitat

B

Question 10: -------- is used to relieve one kind of headache, migraine ?

  1. Pencillin
  2. Lovastatin
  3. Cyclosporine
  4. Ergotin

D

Question 11: ---------- of earth surface is covered with water ?

  1. 10%
  2. 30%
  3. 75%
  4. 90%

C

Question 12: Of the following which one is not the characteristic of mitochondria ?

  1. It contains F1 particles
  2. It is involved in the synthesis of protein
  3. It is a self replicating organelle
  4. Number of mitochondria is constant

D

Question 13: Sickle cell anemia is an example of------------- ?

  1. Chromosomal aberration
  2. Insertion of gene
  3. Deletion of gene
  4. Point mutation

D

Question 14: Cellular organelles related with H2O2 are------ ?

  1. Glyoxisomes
  2. Lysosomes
  3. Peroxisomes
  4. Ribosomes

C

Question 15: Extreme change in pH results in--------- ?

  1. Change in ionization of amino acids at the active site of the enzyme
  2. Change in the ionization of the substrate
  3. Denaturation of the enzyme
  4. Increase in the reaction rate

C

Question 16: Reactions in which simple substances are combined to form complex substances are called------- ?

  1. Metabolic reactions
  2. Catabolic reactions
  3. Anabolic reactions
  4. None of these

C

Question 17: Cn(H2O)n. is a general formula of--------- ?

  1. Monosaccharides
  2. Oligosaccharides
  3. Ploysacharides
  4. Carbohydrates

D

Question 18: Peptide bond is---------- ?

  1. C-N link
  2. C- O lind
  3. N-H link
  4. C-H link

A

Question 19: All of the following veins carry deoxygenated blood except ?

  1. Superior vena cava
  2. Inferior vena cava
  3. Hepatic vein
  4. Pulmonary vein

B

Question 20: The monosaccharide found in some bacteria and occurring rarely are-------- ?

  1. Trioses
  2. Hexoses
  3. Tetroses
  4. Pentoses

C

Question 21: Which conjegated molecules play important role in gene expression------ ?

  1. Glycolipids
  2. Glycoproteins
  3. Nucleohistones
  4. None of these

C

Question 22: Viruses are ---------- smaller than bacteria ?

  1. 10 – 100 times
  2. 10 – 1000 times
  3. 100 – 1000 times
  4. 1000 – 10000 times

B

Question 23: In lysogenic cycle the process of spearation of phage DNA from the hosts chromosome and initiation of lytic cycle is called-------- ?

  1. Lysis
  2. Lysogeny
  3. Induction
  4. Adsorption

C

Question 24: An illness which largely affects girls usually just after the onset of puberty ?

  1. Bulimia nervosa
  2. Obesity
  3. Anorexia nervosa
  4. None of these

C

Question 25: -------is about 2.4 meter in length and comprising about two fifth of the small intestine ?

  1. Duodenum
  2. Jejunum
  3. Ileum
  4. Caecum

B

Question 26: Which one of the following is the largest group of fungi ?

  1. Zygomycota
  2. Basidiomycota
  3. Deuteromycota
  4. Ascomycota

D

Question 27: Which of the following is responsible for Irish potato famine ?

  1. Dinoflagellates
  2. Kleps
  3. Physarum polycephalum
  4. Phytophthora infestans

D

Question 28: Which of the following statement is incorrect about algae----------- ?

  1. Their zygote unlike plants is protected by parental tissue
  2. Their classification is based on pigment composition
  3. Most of them have different morphological forms in-different stages of their life cycle
  4. Almost all of them are aquatic

A

Question 29: Cyanobacteria have -------- cell wall ?

  1. Gram +ve.
  2. Gram – ve.
  3. Acid fast
  4. Cellulose rich

B

Question 30: Which of the following bacteria do not have flagella commonly-------- ?

  1. Cocci
  2. Bacilli
  3. Streptobacilli
  4. Vibrio

A

Question 31: Of the following which one is not the characteristic of triploblasts ?

  1. All of them have blood vascular system
  2. They may be coelomate pseudocoelomate or acoelomate
  3. They are included in grade bilaterian
  4. All of them have digestive system

A

Question 32: Which of the following are motile zooids in cnidarians ?

  1. Polyps
  2. Medusae
  3. Both of these
  4. None of these

B

Question 33: Pseudocoelem develops from---------- ?

  1. Blastopore
  2. Plastoquinone
  3. Blastocoel
  4. Splitting of mesoderm

C

Question 34: Equistem is an example of--------- ?

  1. Psilopsida
  2. Lycopsida
  3. Sphenopsida
  4. Prteropsida

C

Question 35: Psedudocoelom is character of-------- ?

  1. Coelenterates
  2. Platyhelminthes
  3. Aschelminthes
  4. Annelids

C

Question 36: The arrangement of unequal dichotomous branches in one plane during evolution of leaves is called-------- ?

  1. Overtopping
  2. Fusion
  3. Webbing
  4. Planation

D

Question 37: Microspore of a seed plant that contain male gametophyte including the gamete is called-------- ?

  1. Pollen grain
  2. Ovule
  3. Microgametophyte
  4. Microsporangium

A

Question 38: Which of the following is used in brewing industry to promote malting------- ?

  1. Gibberellins
  2. Cytokinins
  3. Auxins
  4. Abscisic Acid

A

Question 39: The only promoter of leaf senescence in the following plant hormones is-------- ?

  1. Gibberellins
  2. Cytokinins
  3. Auxins
  4. Abscisic Acid

D

Question 40: Secretin is a hormone produced by--------- ?

  1. Stomach
  2. Liver
  3. Pancreas
  4. Duodenum

B

Question 41: Acromegaly is caused due to oversecretion of--------- ?

  1. STH
  2. TSH
  3. ACTH
  4. Thyroxin

D

Question 42: In which of the following neurons length of dendrite is greater than axon------ ?

  1. Sensory neuron
  2. Motor neuron
  3. Associative neuron
  4. none of these.

A

Question 43: Carotenoids perform protective function in--------- ?

  1. Animals
  2. Plants
  3. Both of these
  4. None of these

C

Question 44: Visible light used in photosynthesis ranges from:------- ?

  1. 300 – 700 nm in wavelength
  2. 350 – 750 nm in wavelength
  3. 380 – 750 nm in wavelength
  4. 390 – 790 nm in wavelength.

C

Question 45: Light reaction takes place on/in-------- ?

  1. Thylakoid
  2. Storma
  3. Chloroplast
  4. Grana

D

Question 46: ------- respiration is directly involved in the production of energy, necessary for all living activities ?

  1. Organismic
  2. Cellular
  3. Both of these
  4. None of these

B

Question 47: When abdomen expands, the number of spiracles open is-------- ?

  1. 2
  2. 3
  3. 6
  4. 8

D

Question 48: In most birds air sacs are ------------ in number ?

  1. 10
  2. 3
  3. 4
  4. 9

D

Question 49: Vascular Cambium initially appears as actively dividing cells between------- ?

  1. Primary Xylem and secondary xylem.
  2. Primary xylem and secondary phloem.
  3. Primary xylem and primary phloem
  4. Secondary xylem and secondary phloem.

C

Question 50: Which of the following statements is incorrect about skeletal muscle fibers ?

  1. They are multinucleated.
  2. They are 10 – 100 ?m in diameter & surrounded by sarcolemma
  3. They contain O2 storing molecules called hemoglobin.
  4. Their cytoplasm contains high concentration of carbohydrates

C