Bacteria

Q.

What do you mean by Aplanospore?

Q.

Which is the shape of Vibrio bacteria

1. Spherical

2. Comma shape

3. Rod shape

4. Spiral shape

Q.

Which bacteria are present in curd?

Q.

Living organisms around us which cannot be seen by our naked eyes are known as:

1. Mammals

2. Microorganisms

3. Amphibians

4. Reptiles

Q.

___ are spherical shaped bacteria.

1. cocci

2. rod

3. bacillus

4. spiral

Q.

Do Prokaryotic cells have chloroplasts?

Q.

What is the disease causing microbes called as?

Q. Which of the following disease is not caused by protozoan?

1. Malaria
2. Typhoid
3. Kala azar
4. Leishmaniasis

Q.

Pseudomycelium is formed in

1. Puccinia

2. Yeast

3. Rhizopus

4. Mushroom

Q.

The type of bacteria that can grow in the absence of oxygen are called ______.

1. Aerobic

2. Anaerobic

3. Parasitic

4. Saprophytic

Q. Differentiate between:(iv) Bacteria and amoeba.

Q. Which one of the following is a viral disease?

1. Chicken pox
2. Leprosy
3. Pneumonia
4. Cholera

Q.

Which type of bacteria can grow in the absence of oxygen

1. Aerobic

2. Anaerobic

3. Parasitic

4. Saprophytic

Q. “Bacteria are harmful to human beings.” Briefly explain this statement.

Q.

Cyanobacteria are algae and their cells have nuclei.

1. True

2. False

Q.

The harmful, disease causing microorganisms are also known as __.

Q. The bacteria in the root nodules of leguminous plants convert atmospheric _______ into its compounds.

1. oxygen
2. nitrogen
3. sulphur
4. sodium

Q.

Which of the following do not cause disease in plants?

1. Rat Trap

2. Nematodes

3. Fungi

4. Bacteria

Q.

The number of bacterial cells in the human body ______ the number of cells that are a part of the human body.

1. is greater than

2. is zero when compared to

3. is equal to

4. is lesser than

Q.

Bacteria reproduce by _________.

1. Mitosis

2. Meiosis

3. Binary fusion

4. Binary fission

Q.

Statement 1: Paneer or cottage cheese is produced by curdling milk

Statement 2: Bacteria is be used for tanning of leather

1. Statement 1 is false and statement 2 is true

2. Both the statements are true

3. Both the statements are false

4. Statement 1 is true and statement 2 is false

Q.

The most ancient group of organisms on the earth is

1. Eubacteria

2. Cyanobacteria

3. Archaebacteria

4. PPLO

Q.

Curd is formed by ___ bacteria.

Q.

What is Cyanobacteria?

Q.

19. Leguminous plants do not require the addition of nitrogenous fertilizers because

1. they can fix up atmospheric nitrogen.

2. of the presence of Rhizobium bacteria in their root nodules.

3. they possess nitrogen in roots, and hence, do not require external intake.

4. Both (A) and (B)

Q.

Are endospores good or bad?

Q.

I am a comma-shaped, bacteria and I spread through contaminated water and food. I cause severe diarrhoea and water loss in the infected person. If not properly treated the infected person can be severely dehydrated.

Who am I?

1. Female Aedes mosquito

2. Male Aedes mosquito

3. female Anopheles mosquito

4. male Anopheles mosquito

Q. Which of the following is not a virus- borne disease?

1. Dengue
2. Measles
3. Ulcers
4. Warts

Q.

Are olives a fermented food?

Q.

Why are some strains of bacteria pathogenic while others are not?