Tag: bacteria; benefits and harmful effects

Questions Related to bacteria; benefits and harmful effects

Multiple choice botany bacteria bacteria - friend and foe useful and harmful bacteria bacteria; benefits and harmful effects

Xanthomonas citri is related to

  1. Disease in Xanthium

  2. Xanthophyceae

  3. A virus

  4. Citrus canker

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Citrus canker is a disease that is caused by the bacterium Xanthomonas axonopodis. It affects the Citrus species of fruits such as lime, oranges, grapefruit. It results in the lesions on the leaves, stems, fruit and other parts of the citrus plants.

Thus, the correct answer is 'Citrus canker.' 

Multiple choice botany bacteria bacteria - friend and foe useful and harmful bacteria bacteria; benefits and harmful effects

Which of the following organism can be a reason for abortion?

  1. Viruses

  2. Bacteria

  3. Mycoplasma

  4. Chlamydia

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Abortion is the method of ending the pregnancy by removal of either embryo or foetus. Chlamydia is a sexually transmitted infection. Chlamydia may result into Pelvic Inflammatory Disease (PID). It can lead to serious consequences like infertility, ectopic pregnancy and even abortion.

Thus, the correct answer is 'Chlamydia.'

Multiple choice botany bacteria bacteria - friend and foe useful and harmful bacteria bacteria; benefits and harmful effects

Trachoma is caused by

  1. Spirochaete

  2. Chlamydia

  3. Trichonympha

  4. Paramaecium

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Trachoma is an infectious disease caused by bacterium Chlamydia trachomatis. It results in the roughening of the inner surface of the eyelids. The symptoms include pain in the eyes, itching and irritation in the eyes, blindness. It is a contagious disease.

Thus, the correct answer is 'Chlamydia.'

Multiple choice botany bacteria bacteria - friend and foe useful and harmful bacteria bacteria; benefits and harmful effects

The infectious and contagious bacterial disease that affects cattle, buffaloes, horses, sheep and goats is

  1. Anthrax

  2. Necrosis

  3. Tick fever

  4. Rinderpest

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Anthrax is an infectious disease caused by bacterium Bacillus anthracis. It mainly affects rudiments like cattle, buffaloes, horses, sheep. It rarely occurs in humans. Symptoms include sore throat, mild fever, fatigue, muscle aches.

Thus, the correct answer is 'Anthrax.'

Multiple choice botany bacteria bacteria - friend and foe useful and harmful bacteria bacteria; benefits and harmful effects

The most well studied bacterial-plant relationship is that of

  1. Cyanobacterial symbiosis with some aquatic ferms

  2. Nodulation in Sesbania stem

  3. Gall formation by Agrobacterium

  4. Growth stimulation by phosphate bacteria

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The interaction between Agrobacterium tumefaciens and plants is one of the most studied systems in plant-microbe interactions due to its ability to genetically transform plants.

Multiple choice botany bacteria bacteria - friend and foe useful and harmful bacteria bacteria; benefits and harmful effects

Which one causes blight disease of rice?

  1. Xanthomonas oryzae

  2. Pseudomonas oryzae

  3. Erwinia oryzae

  4. Corynebacterium oryzae

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Blight disease of Rice is a deadly disease that affects the cultivated rice. It is caused by bacteria Xanthomonas oryzae. It causes wilting of seedlings and yellowing and drying of leaves.

Thus, the correct answer is 'Xanthomonas oryzae.'

Multiple choice botany bacteria bacteria - friend and foe useful and harmful bacteria bacteria; benefits and harmful effects

Gas gangrene is caused by

  1. Streptococcus pyrogenes

  2. Treponema pallidum

  3. Clostridium perfringens

  4. Salmonella dublin

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Gas gangrene is caused by the Clostridium perfringens bacterium. This produces gas in tissues in gangrene. It results in the swelling.  The skin turns pale to brownish-red. 

Thus, the correct answer is 'Clostridium perfringens.'