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Model Paper of Biology for class 9th

Model Paper

Biology Papr - XII

Name ------------------------------------
Roll No ------------------------------------

Marks : 18 Time Allowed: 20 Minutes

SECTION - A

1- In human respiratory system which organ is coming after larynx?
(a) Bronchi (b)Pharynx (c) Alveoli (d) Bronchioles
2- If the arterial blood is 97% saturated with oxygen then the oxygen carrying capacity by 100 ml blood will be----
(a) 2O ml (b) 19.4ml (c) 4.4 m(d) 97ml
3- during the infection raised body temperature is helpful because it------------
(a) Kills pathogen (b) Stimulates defense system
(c) Activates body organ (d) Increases number of WBC
4- What happens during muscle relaxation?
(a) calcium ions re-accumulate in sarcoplasmic reticulum
(b) Calcuim ions Secreted by calcium vesicles
(c) Allow Action bind with myosin
(d) Stop nerve impulse
5- Resting membrane potential is caused by------------
(a) Greater concentration of K + ions on inside
(b) Less concentration of K + ions on inside
(c) Grater concentration of K + ions on inside
(d) Both A & B are correct
6- All are signs of diabetes mellitus except one
(a) Polyuria (b)Polydipria (c) Polyphagia (d) Plmylketururia
7- Behaviors performed in the same way each time by each individual is related to------------
(a) Heritable (b) Stereotypic (c) Intrinsic (d) Inflexible
8- Secondary oocyte after penctration by sperm through meiosis-II gives---------
(a) one ovum & second polar bodies
(b) Two polar body
(c) Two ovum
(d) Four polar bodies
9- Fraternal twins result from fertilization of -------------
(a) One ovum by one sperm
(b) Two ova by two sperms
(c) One voum by two sperms
(d) Two ova by one sperm
10 - When Fl pink flower plants of 4,0, clock are crossed the F2 phenotypic ratio will be.
(a) 3:1 (b)4:0 (c) 2:2 (d) None of These
11- The possible genotype of blood group 'A' will be --------------
(a) IA IA or IA I (b) IBIB or IAi (c) IA IB (d) ii
12- A chromosome having Centrumere position at unequal distance is called.
(a) Acrocentric (b) Metacentic (c) Telocentric (d) sub metacentric
13- The genetic code AGA specifies arginine in bacteria human and other organism, it show.
(a) Universality (b) Redundancy (c) Ambiguity (d) Degeneracy
14- Sometime in small population by chance the frequency of allels change, the condition is called ----
(a) Genetic variation (b) Mutation (c) Genetic drift (d) Gene flow
15 - The most efficient nitrogen fixation is
(a) Atmospheric (b) Industrial (c) Biological (d) Restriction
16 - Which one do the function of glue in field of genetic engineering?
(a) Endonuclease (b) Ligase (c) Polymerase (d) Restriction enzyme
17 - The concept of vaccine is --------------
(a) To produce antbodies (b) To kill germs (c) To healthy the body (d) Catalytic
18 - The total number of vertebrae in human vertebral column is.
(a) 30 (b) 26 (c) 12 (d) 33





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