Chapter 7. Control and Coordination

Transcription

1 Chpter 7 Control n Coorintion 1 Whih of the following sttements is orret out reeptors? Gusttory reeptors etet tste while olftory reeptors etet smell Both gusttory n olftory reeptors etet smell Auitory reeptors etet smell n olftory reeptors etet tste Olftory reeptors etet tste n gusttory reeptors smell 2 Eletril impulse trvels in neuron from Denrite xon xonl en ell oy Cell oy enrite xon xonl en Denrite ell oy xon xonl en Axonl en xon ell oy enrite 3 In synpse, hemil signl is trnsmitte from Denriti en of one neuron to xonl en of nother neuron Axon to ell oy of the sme neuron Cell oy to xonl en of the sme neuron Axonl en of one neuron to enriti en of nother neuron 4 In neuron, onversion of eletril signl to hemil signl ours t/in Cell oy Axonl en Denriti en Axon 5 Whih is the orret sequene of the omponents of reflex r? Reeptors Musles Sensory neuron Motor neuron Spinl or Reeptors Motor neuron Spinl or Sensory neuron Musle Reeptors Spinl or Sensory neuron Motor neuron Musle

2 Reeptors Sensory neuron Spinl or Motor neuron Musle 6 Whih of the following sttements re true? i Suen tion in response to something in the environment is lle reflex tion ii Sensory neurons rry signls from spinl or to musles iii Motor neurons rry signls from reeptors to spinl or iv The pth through whih signls re trnsmitte from reeptor to musle or gln is lle reflex r (i) n (ii) (i) n (iii) (i) n (iv) (i), (ii) n (iii) 7 Whih of the following sttements re true out the rin? i The min thinking prt of rin is hin rin ii Centres of hering, smell, memory, sight, et. re lote in forerin. iii Involuntry tions like slivtion, vomiting, loo pressure re ontrolle y the meull in the hin rin iv Cereellum oes not ontrol posture n lne of the oy (i) n (ii) (i), (ii) n (iii) (ii) n (iii) (iii) n (iv) 8 Posture n lne of the oy is ontrolle y Cererum Cereellum Meull Pons 9 Spinl or origintes from Cererum Meull Pons Cereellum

3 10 The movement of shoot towrs light is Geotropism Hyrotropism Chemotropism Phototropism 11 The min funtion of sissi i in plnts is to Inrese the length of ells Promote ell ivision Inhiit growth Promote growth of stem 12 The growth of tenril in pe plnts is ue to Effet of light Effet of grvity Rpi ell ivisions in tenrillr ells tht re wy from the support Rpi ell ivisions in tenrillr ells in ontt with the support 13 The growth of pollen tues towrs ovules is ue to Hyrotropism Chemotropism Geotropism Phototropism 14 The movement of sunflower in orne with the pth of sun is ue to Phototropism Geotropism Chemotropism Hyrotropism 15 The sustne tht triggers the fll of mture leves n fruits from plnts is ue to Auxin Gierellin Asissi i Cytokinin 16 Whih of the following is not ssoite with growth of plnt? Auxin

4 Gierellins Cytokinins Asissi i 17 Ioine is neessry for the synthesis of whih hormone? Arenline Thyroxin Auxin Insulin 18 Choose the inorret sttement out insulin It is proue from pnres It regultes growth n evelopment of the oy It regultes loo sugr level Insuffiient seretion of insulin will use ietes 19 Selet the mis-mthe pir Arenline: Pituitry gln Testosterone: Testes Estrogen: Ovry Thyroxin: Thyroi gln 20 The shpe of gur ells hnges ue to hnge in the Protein omposition of ells Temperture of ells Amount of wter in ells Position of nuleus in the ells 21 Choose the orret sttement with respet to onution of nerve impulse

5 i ii iii iv v Nerve impulse trvels from enriti en towrs xonl en At the enriti en eletril impulses ring out the relese of some hemils whih generte n eletril impulse t the xonl en of nother neuron The hemils relese from the xonl en of one neuron ross the synpse n generte similr eletril impulse in enrite of nother neuron A neuron trnsmits eletril impulses not only to nother neuron ut lso to musle n gln ells Answer: () The hemils relese from the xonl en of one neuron ross the synpse n generte similr eletril impulse in enrite of nother neuron Involuntry tions in the oy re ontrolle y Meull in forerin Meull in mirin Meull in hinrin Meull in spinl or 22 Whih of the following is not n involuntry tion? Vomiting Slivtion Hert et Chewing 23 When person is suffering from severe ol, he or she nnot Differentite the tste of n pple from tht of n ie rem Differentite the smell of perfume from tht of n grtti Differentite re light from green light Differentite hot ojet from ol ojet 24 Wht is the orret iretion of flow of eletril impulses?

6 25 Whih sttement is not true out thyroxin? Iron is essentil for the synthesis of thyroxin It regultes rohyrtes, protein n ft metolism in the oy Thyroi gln requires ioine to synthesise thyroxin Thyroxin is lso lle thyroi hormone 26 Dwrfism results ue to Exess seretion of thyroxin Less seretion of growth hormone Less seretion of renline Exess seretion of growth hormone 27 Drmti hnges of oy fetures ssoite with puerty re minly euse of seretion of Oestrogen from testes n testosterone from ovry Oestrogen from renl gln n testosterone from pituitry gln Testosterone from testes n Oestrogen from ovry Testosterone from thyroi gln n Oestrogen from pituitry gln 28 A otor vise person to tke n injetion of insulin euse

7 His loo pressure ws low His hert ws eting slowly He ws suffering from goiter His sugr level in loo ws high 29 The hormone whih inreses the fertility in mles is lle Oestrogen Testosterone Insulin Growth hormone 30 Whih of the following enorine glns is unpire? Arenl Testes Pituitry Ovry 31 Juntion etween two neurons is lle Cell juntion Neuro musulr juntion Neurl joint Synpse 32 In humns, the life proesses re ontrolle n regulte y Reproutive n enorine systems Respirtory n nervous systems Enorine n igestive systems Nervous n enorine systems 33 Gusttory reeptors will etet

8 light Tste Smell Touh 34 Involuntry tions inluing loo pressure, slivtion n vomiting re ontrolle y the in the hin-rin. Mels Cereellum Meull Cererum 35 is growth inhiiter hormone in plnts Auxin Cytokinin Asii i Gierelli i 36 If there is efiieny of growth hormone the hil eomes Blin Mentlly retre Gint Dwrf 37 People living in ostl res suffer less from goiter. This is euse They et se foo They rink se wter They the in se wter All of the ove