9th Biology Chapter 02 Solving a Biological Problem Solved MCQs

Learn online solved MCQs Biology Class Ninth Full Chapter No. 02 Solving a Biological Problem. Learn online objective type questions with solved answers in online most repeated questions and answers.

9th Biology Chapter 02 MCQs Question Answers

Q.1: The scientists who observed Plasmodium first time in human blood is?

1. Aristotle
2. Bu-Ali-Sina
3. Laveran
4. None of these

C

Q.2: Who performed experiments on sparrow?

1. Ross
2. A.F.A.King
3. Laveran
4. None

A

Q.3: A hypothesis must be testable to be scientifically valid. Being testable means that?

1. Some observations could prove that hypothesis is incorect
2. Only a controlled experiment can indicate whether the hypothesis is correct or incorrect
3. The hypothesis is proven wrong
4. The opposite of hypothesis is tested and proven worng

B

Q.4: A scientific theory has which of the following properties?

1. It agrees with the available evidence
2. It cannot be rejected
3. It has been absolute proven
4. It does not need to be altered in the light of new evidences

C

Q.5: A testable statement is (a/an)?

1. Observation
2. Hypothesis
3. Theory
4. Law

B

Q.6: In every proportion of two ratios are?

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

C

Q.7: ------------ is called the father of genetics?

1. Mendal
2. Ronald Ross
3. A.F.A King
4. All

A

Q.8: Ronald Ross experimented on ------------ and ------------mosquitoes?

1. Culex
2. Anopheles
3. Both
4. None

C

Q.9: ------------ is probably one of the oldest disease known to mankind?

1. Polio
2. T,B
3. Hepatitis
4. Malaria

D

Q.10: What would be the best experimental design for testing a hypothesis that bean plants require sodium?

1. Measure the amount of sodium in a few bean plants
2. Grow bean plants with and without sodium
3. Look for sodium in leaf tissues
4. Analyze root contents for sodium

B

Q.11: Plasmodium was first seen by?

1. Ross
2. A.F.A.King
3. Laveran
4. None

C

Q.12: Which one of the following is a correct sequence in biological method?

1. Observations, Hypothesis, Law, Theory
2. Hypothesis, Observation, Deduction, Experimentation
3. Observations, Hypothesis, Deduction, Experimentation
4. Law, Theory, Deduction, Observation

C

Q.13: In sparrows malaria is spread by?

1. Culex mosquito
2. Anopheles mosquito
3. Marshy areas
4. Any mosquito

Q.14: Healthy person’s blood should be ------------ from plasmodium?

1. Full
2. Half
3. Free
4. None

C

Q.15: Which of the quantitative observation?

1. Colour
2. Smell
3. Beauty
4. Height

D

Q.16: Plasmodium completes its asexual reproduction properties?

1. Mosquito
2. Human body
3. Stomach
4. Salivary glands

B

Q.17: Which one of these is NOT a characteristic of a hypothesis?

1. Must be consistent with all available data
2. Must be testable
3. Must be correct
4. Must make predictions

C

Q.18: At which point is a biological most likely to use reasoning?

1. While taking observations
2. During hypothesis formulation
3. During data organization
4. None of these

B

Q.19: Dengue fever is transmitted by?

1. Culex mosquito
2. Anopheles mosquito
3. Aedes mosquito
4. None of these

C

Q.20: Science is based on ----------?

1. Obsrvation
2. Theory
3. Hypothesis
4. Law

A

Q.21: Ronald Ross was a ------------ army physician?

1. British
2. American
3. German
4. Chinese

A

Q.22: A gardener sees a large snake nearby. he knows generally snakes sting, so the gardener ran away. The gardener did which of the following?

1. Used reasoning
2. Used observation
3. Constructed a theory
4. Tested a hypothesis

A

Q.23: Malaria is from ------------ word Mala means bad and aria means air?

1. Italian
2. English
3. German
4. Swedish

A

Q.24: Scientific law is interchangeable with ?

1. Hypothesis
2. Theory
3. Deduction
4. Observation

B

Q.25: In man Plasmodium multiplies in the?

1. Wall of stomach
2. Blood
3. Skin
4. Kidney

B

Q.26: ” Mosquitose are involved in the spread of malaria” was said by?

1. Laverna
2. A.F.A King
3. Ronald Ross
4. Darwin

B

Q.27: The tentative explanation of the observation is called?

1. Problem
2. Hypothesis
3. Deduction
4. Result

B

Q.28: The bark of ------------ tree was the cure for malaria?

1. Deodar
2. Cendar
3. Cinchona
4. None

C

Q.29: People who used mosquito nets suffered ------------ from malaria?

1. More
2. Less
3. Both
4. None

B

Q.30: A scientific law is an irrefutable?

1. Observation
2. Theory
3. Principle
4. None of these

B

Q.31: Quantitative observations are considered more accurate than qualitative observation because quantitative are?

1. Invariable
2. Measurable
3. Recorded in terms of numbers
4. All of these

D

Q.32: Data may consist by ?

1. Number
2. Words
3. Images
4. All

D

Q.33: What would be the best experimental design for testing a hypothesis that bean plants require sodium?

1. Measure the amount of sodium in a few bean plants
2. Grow bean plants with and without sodium
3. Look for sodium in leaf tissues
4. Analyze root contents for sodium

B

Q.34: Quinine is obtained form?

1. quina-quina
2. Deodar
3. Cinchona
4. Shisham

C

Q.35: No of steps of biological method are?

1. Six
2. Seven
3. Two
4. Eight

B

Q.36: Experimentation is only a step of the scientific process but it is very important step because it always?

1. Gives the biologist a correct result
2. Allows rejection of some alternative hypothesis
3. Ensures that hypothesis can be confirmed with certainity
4. Give scientists a chance to work in the laboratory

C

Q.37: Which one of the following is correct sequence in biological method?

1. Observations, Hypothesis , Law, Theory
2. Hypothesis, observations, Deductions , Experimentation
3. Observations, hypothesis, Deduction, Experimentation
4. Law, Theory , Deduction, Observations

C

Q.38: Which one of these in “not” a characteristic of hypothesis?

1. Must be consistent with all available data
2. Must be testable
3. Must be correct
4. Must predictions

C

Q.39: The part of mustard plant which yields oil is?

1. Leaf
2. Seed
3. Root
4. Flower

B

Q.40: When A.F.A King did work on Malaria?

1. 1880
2. 1881
3. 1882
4. 1883

D

Q.41: A.F.A King supported his hypothesis by about ------------ observation?

1. 10
2. 15
3. 20
4. 25

C

Q.42: Mendal experimented on ------------ plants?

1. Potato
2. Pea
3. Rose
4. Pine

B

Q.43: You are testing a hypothesis; “students learn more if they drink tea before sitting for study”. Your 20 experimental students drink tea before study;You test their learning by giving question. Your 20 students of the control group should have all experimental conditions identical to the experimental group EXCEPT that?

1. They should take tea
2. They should take tea before as well as during study
3. They should not take tea before studing
4. They should not sit for studing

C

Q.44: Cinchona tree is also known as?

1. Guina guina
2. Quina Quina
3. Both
4. None

B

Q.45: ….......... set up the largest land empire ever known?

1. Aristotle
2. Alexander
3. Laveran
4. Genghis khan

D

Q.46: A gardner sees a large snake nearby. He knows that generally snakes sting, so the gardener ran away. The gardener did which of the following?

1. Used reasoning
2. Used observation
3. Constructed a theory
4. Tested a hypothesis

B

Q.47: Which of the followings is the symptom of malaria?

1. Chills
2. Fevers
3. Recurring attacks
4. All

D

Q.48: Plasmodium was named by?

1. Ross
2. A.F.A.King
3. Laveran
4. None

C

Q.49: Who suggested that mosquitoes are involved in the transmission of malaria?

1. Laveran
2. Ronald Ross
3. A.F.A king
4. None of these

C

Q.50: No of steps of biological method are?

1. Seven
2. Six
3. Two
4. Eight

A

Q.51: The hypotheses, which are often tested and never rejected become?

1. Laws
2. Principles
3. Theories
4. Results

C

Q.52: Which mosquito spread malaria in birds?

1. Anopheles
2. Culex
3. Anopheles & Culex
4. None of these

B

Q.53: In biological experiments, testing of hypothesis is based upon?

1. Observation
2. Hypothesis
3. Data
4. Law

C

Q.54: ------------ is believed to have died of malaria?

1. Aristotle
2. Alexander
3. Laveran
4. Genghis khan

B

Q.55: “Plasmodium is the cause of malaria ” is?

1. Hypothesis
2. Deduction
3. Experiment
4. Law

A

Q.56: Data are of ------------ types?

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

B

Q.57: Bark of quina – quina was imported form?

1. Europe
2. America
3. Sapin
4. India

B

Q.58: Logical consequences of hypothesis is?

1. Experiment
2. Deduction
3. Observations
4. Theory

B

Q.59: Scientists noticed that persons living near marshy areas were most likely suffered from malaria. They will considered this fact as?

1. Problem
2. Hypothesis
3. Observation
4. Experiment

C

Q.60: At which point, is a biologist most likely to use reasoning?

1. While talking observations
2. During hypothesis formulation
3. During data organization
4. None of these

B

Q.61: Five senses are involved in?

1. Hypothesis
2. Observations
3. Deduction
4. Experiment

B