Support and Movements Class 12 MCQ: Class 12 Biology MCQ Questions and Answer. Students get here all Important MCQ on Support and Movements Class 12.
Support and Movements Class 12 MCQ with Answers:
(1) _____ support develops support moments
(a) Hinged
(b) Simple
(c) Fixed
(d) Joint
Ans: (c) Fixed
(2) Higher Support is called as
(a) Socket Joint
(b) Swivel Joint
(c) Ball Joint
(d) Pin joint
Ans: (d) Pin joint
(3) For a simply supported beam, the moment at the supports is always
(a) Maximum
(b) Zero
(c) Minimum
(d) Cannot be determined
Ans: (b) Zero
(4) Hinged supports offers vertical & _____ reaction
(a) Horizontal
(b) moments
(c) Rotution
(d) Cuuple
Ans: (a) Horizontal
(5) In animals _____ cartilage & bones provides supports
(a) Muscles
(b) Collechymatous cells
(c) Scterenchymatous cells
(d) None of these
Ans: (a) Muscles
(6) Which plants cells give support to the body plant?
(a) Scterenchymatous cells
(b) Parenchyma
(c) Collenchymatous cells
(d) both (a) & (b)
Ans: (c) Collenchymatous cells
(7) _____ in plant gives support to the adult plants
(a) Parenchyma
(b) Collechymatous
(c) Scterencymatous cells
(d) None of these
Ans: (c) Scterencymatous cells
(8) Roots response towards gravity is the display of
(a) Positive geotropism
(b) negative geotropism
(c) neutral geotropism
(d) Static geotropism
Ans: (a) Positive geotropism
(9) The outer covering vacuole is called
(a) toroplast
(b) Chloroplast
(c) Epidenrmis
(d) Sapwood
Ans: (a) toroplast
(10) Tracheid are found in xylem as
(a) Pectin
(b) Cellulose
(c) bundle caps
(d) Seive tubes
Ans: (c) bundle caps
(11) Cnidarian & annelids have which type of skeleton?
(a) exoskeleton
(b) Hydrostatic Skeleton
(c) Axial Skeleton
(d) endoskeleton
Ans: (b) Hydrostatic Skeleton
(12) The secondary growth in plant, girth due to
(a) Vascular cambium only
(b) Cork cambium only
(c) Vascular Cork
(d) Vascular & Cork Cambium
Ans: (d) Vascular & Cork Cambium
(13) The larval epidermis is produced by
(a) Clear cytoplasm
(b) Yellow Cytoplasm
(c) gray vegetal cytoplasm
(d) brown Cytoplasm
Ans: (a) Clear cytoplasm
(14) The signs of aging include which of the following?
(a) loss of hair pigment
(b) dryness & Wrinkling of skin
(c) Forgetfulness
(d) all of above
Ans: (d) all of above
(15) Secondary tissue is added by the
(a) intercalary meristem only
(b) Vascular Cambium only
(c) Opical meristem
(d) intercalary meristem & vascular cambium
Ans: (d) intercalary meristem & vascular cambium
(16) In growth & development, Stage one in differential involves
(a) recognition of apical meristem
(b) formation of embryo
(c) recognition of cambium
(d) Production of leaf primordial
Ans: (b) formation of embryo
(17) The egg & male gametes fuse to develop in to an embryo & endosperm nucleus by the process
(a) Conjugation
(b) fertilization
(c) double fertilization
(d) triple fertilization
Ans: (c) double fertilization
(18) The response of passive immunity is
(a) Slow
(b) gradual
(c) immediate
(d) hard
Ans: (c) immediate
(19) Groups of sporangia are found on the underside reflexed lobes of margins of leaflets & protected by a bent margin of the leaflet is called
(a) Sori
(b) Sertoli
(c) tine
(d) Petioli
Ans: (a) Sori
(20) Which of the following term defines the mechanical removal of the seed coat?
(a) Germination
(b) Dormancy
(c) Scarification
(d) Scetullum
Ans: (c) Scarification
(21) Protoplasmic Steaming movement are called as
(a) movements of curvature
(b) Thigmonasty
(c) autonomic movements of locomotion
(d) Photonasty
Ans: (c) autonomic movements of locomotion
(22) Yeo tropic roots are
(a) Primary
(b) Tertiary
(c) Secondary
(d) None of these
Ans: (b) Tertiary
(23) Negative geotropism show
(a) Thigmotropism
(b) Negative phototropism
(c) Pneumatophores
(d) Positive geotropism
Ans: (c) Pneumatophores
(24) What are the control points where a plant adjusts the quantity & types of solutes that reach the Xylem
(a) Cellulose deposited casparian Strips
(b) Transport Proteins of endodermal cell
(c) Sctenchyma around the pericycle
(d) The root hairs themselves
Ans: (b) Transport Proteins of endodermal cell
(25) If a pressure greater then atmospheric pressure is applied to a solution, it’s water potential
(a) Increase
(b) Decrease
(c) Remains the Same
(d) Becomes Zero
Ans: (a) Increase
(26) The movement of plant in response to a Stimulus is called
(a) Phototropism
(b) Geotropism
(c) Tropism
(d) Hydrotropism
Ans: (c) tropism
(27) The roots of the plant are negatively phototropic
(a) True
(b) False
Ans: (a) True
(28) Name the term which defines the plant movements by touch?
(a) Seismonasty
(b) Thigmonasty
(c) Nyctinasty
(d) Photonasty
Ans: (b) Thigmonasty
(29) Name the movement of plant in response to a magnetic field?
(a) Geotaxis
(b) Magnetotaxis
(c) Phototaxis
(d) Rheotaxis
Ans: (b) Magnetotaxis
(30) What is called the movement of plant towards gravity?
(a) Chemotropism
(b) Geotropism
(c) Hydrotropism
(d) Phototropism
Ans: (b) Geotropism
(31) The movement of stems & roots in response to the force of gravity is called as
(a) Geotropism
(b) Hydrotropism
(c) Thigmotropism
(d) Chemotropism
Ans: (a) Geotropism
(32) The movement in response in response to Stimulus of chemicals is called as
(a) Phototactic movement
(b) Chemotactic movement
(c) Sleep movement
(d) Turgor movement
Ans: (b) Chemotactic movement
(33) An apparatus commonly used to demonstrate phototropism is
(a) Heliotropic Chamber
(b) Clinostat
(c) arc auxanometer
(d) Photometer
Ans: (a) Helitropic Chamber
(34) Auxanometer is used to demonstrate
(a) Movements
(b) growth
(c) auxin concentration
(d) respiration
Ans: (b) growth
(35) Which of the following would be an example of chemotropic movement?
(a) Movement of moss antherozoid in response to cane sugar Secreted by archegonia
(b) movement of fern antherozoid in response to malic acid
(c) growth of pollen tube on the stigma
(d) growth of Pollen grain inside the another
Ans: (c) growth of pollen tube on the stigma
(36) Clinostat is employed in the study of
(a) Osmosis
(b) growth movements
(c) Photosynthesis
(d) respiration
Ans: (b) growth movements
(37) Thigmotropism is the response of the plant to
(a) gravity
(b) Water
(c) Light
(d) Contact
Ans: (d) Contact
(38) Phototropic movements of stem & roots are due to
(a) action of gravity
(b) action of light
(c) differential action of hormones
(d) epinasy & hyponasty
Ans: (b) action of light
(39) Tropic movements are due to
(a) Cell elongation
(b) Cell division
(c) Sudden gain of water
(d) Sudden gain of light
Ans: (c) Sudden gain of water
(40) Thigmotropism is best exhibited by
(a) root apex
(b) tendrils
(c) thorns
(d) Lamina
Ans: (b) tendrils
(41) The streaming movement of living proto plasm can be best demonstrated in
(a) Pith cells
(b) root tip cells
(c) Staminal hairs of Tradescantice
(d) epidermal peels of onion
Ans: (c) Staminal hairs of Tradescantice
(42) Streaming movement of Protoplasm in hydrilla leaves is an example of
(a) Spontaneous movement
(b) induced movement
(c) Para tonic movement
(d) Tropic movement
Ans: (a) Spontaneous movement
(43) A horizontally placed plant exhibits apogeotropism due to
(a) accumulation of auxin on the upper side
(b) accumulation of auxin on the lower side
(c) Cell enlargement on the upper side
(d) Cell Shrinkage on the lower side
Ans: (b) accumulation of auxin on the lower side
(44) Which of the following plant shows both nyctinasty & thigmonasty?
(a) Dorsera
(b) Cuscuta
(c) Utricularia
(d) Mimosa
Ans: (a) Dorsera
(45) Growth of pollen tube towards embryo Sac is
(a) geotropism
(b) thigmotropism
(c) Chemotropism
(d) all of these
Ans: (c) Chemotropism
(46) Movement of Pollen tube towards ovule is
(a) Chemotropism
(b) Haptotropism
(c) Thigmotropism
(d) Phototropism
Ans: (a) Chemotropism
(47) Thigmotaxis is shown by
(a) amoeba
(b) Hydra
(c) Ascaxis
(d) Paramecium
Ans: (a) amoeba
(48) Movement Stimulated by enternal factor is
(a) Spontaneous movement
(b) autonomic movement
(c) Physical movement
(d) Paratonic movement
Ans: (d) Paratonic movement
(49) Drooping of tamarind leaves after sunset is
(a) Phototropism
(b) Phototaxis
(c) Photonasty
(d) Chemotaxis
Ans: (c) Photonasty
(50) Nastic movement is caused by
(a) Soil
(b) Protein
(c) rainfall
(d) temperature
Ans: (d) temperature
(51) The Softer connective tissue which covers the ends of the bone joint is
(a) exoskeleton
(b) compact bone
(c) Sponge bone
(d) Cartilage
Ans: (d) Cartilage
(52) The Shedding of the exoskeleton to replace it due to growth in the body is termed as
(a) moulting only
(b) ecdysis only
(c) Molding
(d) moulting & ecdysis
Ans: (d) moulting & ecdysis
(53) The flexible elastic & nonliving matrix collage are secreted by
(a) Chondrocytes
(b) Phagocytes
(c) Coenocytes
(d) erythrocytes
Ans: (a) Chondrocytes
(54) The epiaticte is the exoskeleton is made up of
(a) lipoprotein
(b) Chitin
(c) Polysaccharide
(d) Fructolipase
Ans: (a) lipoprotein
(55) The Sensory receptors of the exoskeleton are called as
(a) Sensilla
(b) bristles
(c) lenses
(d) effectors
Ans: (a) Sensilla
(56) Bacteria which lack flagella known as
(a) Atrichous
(b) Peritrichous
(c) Amphitrichous
(d) autotrophic
Ans: (a) Atrichous
(57) Special hypral tips which absorb nutrients from the host in parasitic fungi are called-
(a) Rhizods
(b) haustoria
(c) Mycellium
(d) Typhal
Ans: (b) haustoria
(58) Absence of centralized nervous system in hydra is because of
(a) absence of head
(b) absence of brain
(c) absence of nerve cord
(d) all of above
Ans: (d) all of above
(59) The weight of Kidney concerning the total mass of the body is by
(a) 0.01
(b) 0.02
(c) 0.1
(d) 0.12
Ans: (c) 0.1
(60) Muscle fatigue is caused by the accumulation of the
(a) Calcium carbonate
(b) lactic acid
(c) Creatituine
(d) iron
Ans: (b) lactic acid
(61) Major Skeletal component of some gastropods is
(a) tissue
(b) bone
(c) nerve
(d) Cartilage
Ans: (d) Cartilage
(62) In endoskeletons consist of mineral Spicules & fibers in
(a) algae
(b) fungi
(c) bacteria
(d) Sponges
Ans: (d) Sponges
(63) The secondary functions of the exoskeleton are
(a) Sensation
(b) Secretion
(c) Support & Protect
(d) Vision & Sight
Ans: (c) Support & Protect
(64) All are Specific non muscular structure except
(a) Pseudopodia
(b) Cillia
(c) flagella
(d) Spines
Ans: (d) Spines
(65) In amphibians, some position glands are secreted in
(a) dermis
(b) hypodermis
(c) ectoderm
(d) endoderm
Ans: (a) dermis
(66) Skeletal muscles are
(a) Voluntary muscles
(b) involuntary muscles
(c) multinucleated
(d) lack nucleus
Ans: (a) Voluntary muscles
(67) The dermis contains bone in the form of small playcoid scales called
(a) Cuticles
(b) dentils
(c) Prongs
(d) Spines
Ans: (b) dentils
(68) The _____ is the largest Sesamoid bone in the human body
(a) Pelvis
(b) femur
(c) Ulna
(d) Patella
Ans: (d) Patella
(69) The ____ consist of involuntary muscle
(a) Skeletal muscle
(b) Voluntary muscle
(c) Lris
(d) None of above
Ans: (c) Lris
(70) Cardic muscles is extremely resistant to
(a) Striped muscles
(b) fatigue
(c) Skeletal muscles
(d) None of these
Ans: (b) fatigue
(71) Which bone is found in human hand?
(a) Tarsal bone
(b) Parietal bone
(c) Proximal Phalanges
(d) None of these
Ans: (c) Proximal Phalanges
(72) The Cardiac muscle is found in
(a) Heart
(b) Chest
(c) Lungs
(d) None of these
Ans: (a) Heart
(73) Sternum is not a
(a) Pteygoid
(b) Vomer
(c) Skull bone
(d) Occipital bone
Ans: (c) Skull bone
(74) Which bone protects the brain?
(a) Calcium
(b) The Cranium
(c) The Cerebrum
(d) The Cerebellum
Ans: (b) The Cranium
(75) The only movable bone of the skull is
(a) Maxilla
(b) mandible
(c) Temporal bone
(d) frontal bone
Ans: (b) mandible
(76) What is a joint?
(a) A hinge
(b) A ball & Socket
(c) The place where two bones are joined
(d) The place where tendors are fastened together
Ans: (c) The place where two bones are joined
(77) Muscles are made of
(a) Silica
(b) Polyester threads
(c) Calcium & Phosphorus
(d) Groups of Cells called fibres
Ans: (d) Groups of Cells called fibres
(78) The movement of joint away from the midline of the body is termed as
(a) adduction
(b) Extension
(c) abduction
(d) Exoskeletal
Ans: (a) adduction
(79) The human Skeleton is made of total of
(a) 201 bones
(b) 204 bones
(c) 206 bones
(d) 208 bones
Ans: (c) 206 bones
(80) One of the following is not a function of the Skeleton
(a) Breathing
(b) Heaving
(c) Excretion
(d) blood formation
Ans: (c) Excretion
(81) The lower jaw or mandible is made of
(a) One bone
(b) two bones
(c) three bones
(d) Cartilage
Ans: (a) One bone
(82) Which of the following bone is not paired
(a) Vomer
(b) Palatine
(c) Maxilla
(d) Nasal
Ans: (a) Vomer
(83) Which of the following is a freely movable joint?
(a) Ball & Socket
(b) Fibrous joint
(c) Cartiliagous joint
(d) both (a) & (b)
Ans: (a) Ball & Socket
(84) Elbow joint is a
(a) Saddle joint
(b) Ball & Socket joint
(c) Pivot joint
(d) Hinge joint
Ans: (d) Hinge joint
(85) The number of bones in the appendicular Skeleton is
(a) 206
(b) 80
(c) 120
(d) 126
Ans: (d) 126
Support and movements MCQ for Class 12For more updates follow our – net explanations homepage