Wednesday, 3 April 2019

All Biology Test Botany Tests Questions Based Objective Type Mcqs

Learn all grades biology multiple choice questions with answers MCQs. All solved notes of biology MCQs based quiz learning on topics as biodiversity, biology problems, bioenergetics. Here Learn A level biology quiz, multiple choice questions (MCQ) and answers to practice biology tests online for e-learning.

File:Solved PPSC Biology MCQs List.svg
Botany & Biology MCQs


Q.1: A pressure created by active secretion of salts and other solutes from other cells into xylem sap is called------ ?

  1. Transpiration pull
  2. Root pressure
  3. Osmotic pressure.
  4. None of these

B

Q.2: Which of the following statement is incorrect about Molluscans ?

  1. They are surrounded by single or double pieces of hard skeleton.
  2. Their shell grows as the animal grows.
  3. They have hydrostatic skeleton.
  4. They move by tube feet

D

Q.3: Active site of Rubisco is evolved to bind ?

  1. CO2
  2. O2
  3. H2O
  4. All of these

D

Q.4: If a cross section of a sarcomere is seen, each myosin is surrounded by how many actin molecules: ?

  1. 9
  2. 5
  3. 6
  4. 7

C

Q.5: Endoskeleton is secreted by ?

  1. Ectoderm.
  2. Endoderm.
  3. Mesoderm.
  4. All of these

C

Q.6: Tetany is caused by-------- ?

  1. Hypocalcemia
  2. Hypercalcemia
  3. Clostridum tetani.
  4. Low O2 level

A

Q.7: Which of the following statement is incorrect regarding the locomotion in Euglena ?

  1. Move with the help of flagellum, attached to the anterior pole of the body.
  2. Flagellum whipping backwards moving the organism forward, and when moves forward the organism moves backward.
  3. Myonemes can change the direction of the body by making it to shorten from anterior to the posterior pole.
  4. None of these

C

Q.8: Which of the following bones bones are present in the plam of hand ?

  1. Carpals
  2. Metacarpals
  3. Phalanges
  4. Metatarsals

B

Q.9: Which of the following pairs of fins in a fish body are paired ?

  1. Dorsal and ventral.
  2. Pectoral and Pelvic.
  3. Tail and anal
  4. All of these

B

Q.10: How many vertebrae are present in thoracic region ?

  1. 7
  2. 12
  3. 5
  4. 4

B

Q.11: How many vertebrae are in sacrum ?

  1. 7
  2. 12
  3. 5
  4. 4

C

Q.12: Which of the following is the swiftest form of the locomotion ?

  1. Plantigrade
  2. Digitigrade
  3. Unguligrade
  4. Hopping

C

Q.13: How many vertebrae are present in lumbar region ?

  1. 7
  2. 12
  3. 5
  4. 4

C

Q.14: Which of the following bones are present in pectoral girdle ?

  1. Clavicle
  2. Scapula
  3. Both of these
  4. None of these

C

Q.15: Active transport is dependent on------- ?

  1. Photosynthesis
  2. Respiration
  3. Photophosporylation
  4. None of these

B

Q.16: Cytoplasmic strands that extend through pores in adjacent cell walls are known as------ ?

  1. Pseudopods
  2. Symplasts
  3. Plasmodesmata
  4. Pili

C

Q.17: In plants, water potential is determined by major factors ?

  1. Three
  2. Four
  3. Two
  4. Five

C

Q.18: The pressure generated when water enters & inflates plant cells is called ----------- potential ?

  1. Water
  2. Osmotic
  3. Pressure
  4. Solute

C

Q.19: Lenticular transpiration is ----------- of total transpiration ?

  1. 2-3%
  2. 1-3%
  3. 1-4%
  4. 1-2%

D

Q.20: Introduction of vaccine within the body to produce immunity is an example of-------- ?

  1. Artificially induced active immunity
  2. Naturally induced active immunity
  3. Artificially induced passive immunity
  4. Naturally induced passive immunity

A

Q.21: It is the discharge of blood from blood vessels ?

  1. Myocardial infarction
  2. Cerebral infarction
  3. Cerebral Hemorrhage
  4. Thromboembolism

C

Q.22: Aerating openings formed in the bark through which exchange of gases takes place and water is lost in the form of vapours are-------- ?

  1. Hydathods
  2. Stomata
  3. Lenticels
  4. None of these

C

Q.23: Low level of CO2 favours --------- of the stomata ?

  1. Opening
  2. Closure
  3. Both of these
  4. None of these

A

Q.24: Single circuit heart is found in------- ?

  1. Fishes
  2. Amphibians
  3. Reptiles
  4. Mammals

A

Q.25: Brown fat present in certain mammals is specialized in-------- ?

  1. Providing insulation in cold environment.
  2. Providing insulation in hot environment
  3. Rapid heat production.
  4. Controlling heat production.

C

Q.26: Which of the following represents osmoregulatory steps taken by hydrophytes ?

  1. Increases transpiration by increasing the surface area of the leave.
  2. Small and thick leaves to decrease the surface area proportional to the volume of the leave.
  3. Stomata closing in sufficient supply, and opening in restricted supply of water.
  4. None of these

A

Q.27: Which of the following marine fishes are considered direct descendents of fresh water ancestors ?

  1. Hagfish
  2. Jelly Fish
  3. Star Fish
  4. Bony fishes

D

Q.28: Which of the following nephrons play important role in production of concentrated urine ?

  1. Crotical
  2. Medullary
  3. Juxtramedullary
  4. None of these

C

Q.29: Which of the following kidney stones are most common ?

  1. Calcium oxalate
  2. Calcium phosphate
  3. Uric acid
  4. All of these

A

Q.30: Which of the following treatment will be administered first in a newly diagnosed renal failure patient ?

  1. Renal transplant
  2. Peritoneal Dialysis
  3. Lithotripsy
  4. Hemodialysis

D

Q.31: Which of the following is a sentimentally arranged excretory system ?

  1. Protonephridium
  2. Metanephridium
  3. Malpighian tubules
  4. Nephrons

B

Q.32: Each human kidney receives -------% of total cardiac out put ?

  1. 10%
  2. 20%
  3. 30%
  4. 40%

B

Q.33: On which of the following site the posterior pituitary hormone acts predominantly ?

  1. Proximal convoluted tubule
  2. Descending limb of loop of Henle
  3. Ascending limb of loop of Henle
  4. Collecting tubules

D

Q.34: Which of the following fishes excrete large volume of diluted urine ?

  1. Bony Marine fishes
  2. Fresh water fishes
  3. Both depending upon the surrounding water
  4. None of these

B

Q.35: Protonephridia are present in-------- ?

  1. Round worms
  2. Flateworm
  3. Tape worms
  4. Segmented worms

B

Q.36: Which adaptation is acquired by plants of cooler areas to prevent lipid crystal formation in cell membrane ?

  1. Change in membrane protein composition.
  2. Change in the solute composition of the cell membrane which prevents crystallization.
  3. Increase in proportion of unsaturated fatty acids.
  4. Development of heat shock proteins.

C

Q.37: Normal body temperature in mamals like human beings is--------- ?

  1. 26 – 28°C
  2. 36 – 38°C
  3. 46 – 48°C
  4. 56 – 58°C

B

Q.38: In Urea cycle ---------- ammonia molecules combine with 1 CO2 molecule to form 1 molecule of urea ?

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

B

Q.39: Malphighian tubules absorb waste materials and salts from------- ?

  1. Blood
  2. Lymph
  3. Gut
  4. Hemolymph

D

Q.40: Which of the following filtrate contains excessive amount of amino acids, glucose, and salts ?

  1. Glomerular filtrate
  2. Filtrate passing through ascending limb
  3. Filtrate passing through distal conveluted tubule
  4. Filtrate passing through collecting tubules

A

Q.41: Scolidon or dog fish belong to the group of fishes called--------- ?

  1. Cartilaginous fishes
  2. Bony fishes
  3. Running fishes
  4. Jawless fishes

A

Q.42: Snails belong to------- ?

  1. Cephalopodsxc
  2. Gastropods
  3. Bivalves
  4. Athropods

B

Q.43: In man which organisms cause abscesses on the skin of arms or legs ?

  1. Ascaris
  2. Bacteria
  3. Ring worm
  4. Suinea worm

D

Q.44: Chitin in cockroach is absent in--------- ?

  1. Epicuticle
  2. Exocuticle
  3. Endocuticle
  4. All of these

A

Q.45: Melanin pigment in cockroach is found in-------- ?

  1. Epicuticle
  2. Exocuticle
  3. Endocuticle
  4. All of these

B

Q.46: Which organisms are sometimes called the ” pastures of the sea” ?

  1. Diatoms
  2. Radiolarians
  3. Dinoflagellates
  4. Foraminiferans

A

Q.47: Diatoms are found in--------- ?

  1. Phytoplanktonic population
  2. Freshwater lakes and ponds
  3. Marine environment
  4. All of the above

D

Q.48: Microfossile often present in petroleum producing formationsare those of-------- ?

  1. Diatioms
  2. Heliozoans
  3. Radiolarians
  4. Foraminiferans

A

Q.49: Unlike other algae, diatoms do not readily decay due to--------- ?

  1. Siliceous wall
  2. Nonliving cells
  3. Mucilaginous wall
  4. Water proof cell

A

Q.50: The study of fossils is called-------- ?

  1. Environmental Biology
  2. Historical biology
  3. Palaeontology
  4. Social biology

C