Bacteria

Q. Which type of vitamin is synthesized by bacteria present in intestine?

1. None of the above
2. Fat soluble
3. Vitamin c
4. Water soluble

Q. Identify the microorganism used for the preparation of dairy products.

1. $Rhizobium$
2. Yeast
3. $Lactobacillus$
4. $Penicillium$

Q.

Which of the following is correct about microorganisms?

i. Microorganisms are used as food preservatives.
ii. Microorganisms increase soil fertility.
iii. Microorganisms are used to make antibiotics.
iv. Some Microorganisms clean the environment.

1. (i) and (iii)

2. (ii), (iii) and (iv)

3. (ii) and (iii)

4. (i) and (iv)

Q. A bacterial cell divides by splitting into two halves from the middle. What type of reproduction is this?

1. Budding
2. Fission
3. Fragmentation
4. Sexual reproduction

Q.

Why is mycoplasma called a cell wall-less bacteria?

Q. Choose the correct statements regarding microbes.

1. Microbes cannot be seen through the unaided eye.
2. Certain microbes can cause severe infections and diseases.
3. Microbes can not survive in marshy lands.
4. Microbes can be used commercially.

Q. Name a disease caused by a Protozoan. Write the name of causal organism? Mention the symptoms.

Q. Match the following diseases with their target parts in the body.

1. Intestine
2. Lungs
3. Throat

Q. Vaccines are available for which of the following disease?

1. Tuberculosis
2. Brain tumor
3. Sickle cell anaemia
4. Common cold

Q. Waste water released from toilets is full of germs and ______.

1. metallic wastes
2. plastics
3. metallic and plastic wastes
4. microbes

Q. Which type of vitamin is synthesized by bacteria present in intestine?

1. Vitamin c
2. None of the above
3. Water soluble
4. Fat soluble

Q. Name a disease caused by a Protozoan. Write the name of causal organism? Mention the symptoms.

Q.

What is an infectious disease?

Q. A bacterial cell divides by splitting into two halves from the middle. What type of reproduction is this?

1. Sexual reproduction
2. Fission
3. Budding
4. Fragmentation

Q. Typhoid is a disease caused by virus.

1. False
2. True

Q.
Q.10 Which of the following are correct examples of plants propagated through the technique of grafting?


A. mango

B. rose

C.banana

D. guava

Q. Which of the following is a symptom of cholera?

1. Throat pain
2. Diarrhea
3. Cramps
4. Seizure

Q. The bacterial genome is

1. RNA - DNA hybrid
2. Both A and B
3. Circular
4. Filamentous

Q. BCG vaccine is related to

1. Emphysema
2. Pneumonia
3. Polio
4. Tuberculosis

Q. The disease pertussis is popularly known as whooping ................

Q. A child is suffering from high fever, grey coating in the throat and suffocation in respiratory tract. Which disease do these symptoms indicate in your option? Name the causative agent of the disease.