Tag: biology

Quizzes (1160) Questions (12174)

Questions Related to biology

Multiple choice biology option c: ecology and conservation hotspots and methods of conservation biodiversity: conservation conservation of biodiversity

Which of the following is not found in polluted water?

  1. Blue green algae

  2. Larvae of stone fly

  3. Water hyacinth

  4. Sewage fungi
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Stoneflies are found in clean and cool flowing streams. They spend most part of their life in the larval form and are sensitive to water pollution. In particular, stoneflies are sensitive to changes in dissolved oxygen and water temperature. They need a high amount of dissolved oxygen to live comfortably. When the dissolved oxygen falls or the temperatures rise and stoneflies disappear. The presence of stoneflies is a reliable indicator of excellent water quality
So, the correct answer is 'Larvae of stone fly'
Multiple choice biology option c: ecology and conservation hotspots and methods of conservation biodiversity: conservation conservation of biodiversity

Which among the following in excess quantity indicates the contamination of Ganga water bodies?

  1. Dissolved minerals

  2. Coliform bacteria

  3. Dissolved carbon

  4. Dissolved phosphates
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A lot of pathogens are present in water bodies that are contaminated. One of these pathogens is coliform bacteria. This bacteria, like other pathogens, is an indicator of contamination in water bodies. This is because it has a similar reaction to purification and water treatment like other pathogens.

So, it can be used as an indicator of water contamination. So, option B is the correct answer.

Multiple choice biology option c: ecology and conservation hotspots and methods of conservation biodiversity: conservation conservation of biodiversity

$S{O} _{2}$ pollution is indicated by

  1. Desmodium (grasses)

  2. Sphagnum (mosses)

  3. Usnea (lichens)

  4. Cucurbita (climbers)
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

SO$ _2$ is produced during combustion of fossil fuels, refining of petroleum, smelting of sulphur containing ores, smog and acid rain. SO$ _2$ causes membrane damage, destruction of chlorophyll, necrosis and water soaked appearance. Lichens are the most sensitive organisms to SO$ _2$ pollution and do not grow in areas with high levels of sulphur dioxides. Hence, the correct answer is option C.

Multiple choice biology option c: ecology and conservation hotspots and methods of conservation biodiversity: conservation conservation of biodiversity

Who is considered as the Father of Ecology in India

  1. Ramdeo Misra

  2. M.S. Swaminathan

  3. P. Maheshwari

  4. S.L. Mehta
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Professor Ramdeo Misra is recognized as the Father of Ecology in India for his extensive research and establishment of ecology as a discipline in Indian universities.

Multiple choice biology hygiene - a key to healthy life mosquitoes and malaria diseases caused by mosquitoes contaminated water spreads disease

The lifespan of housefly is upto 

  1. 30 days

  2. 3 weeks

  3. 3 days

  4. All of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Houseflies live for up to 3 weeks and are active during the warmer part of the year. An adult female deposits 50 to 100 eggs at a time and about 500 eggs over her lifetime. The eggs are deposited in rotting organic matter. They hatch after about 12 hours and the larvae, or maggots, feed on the rotting organic material. A maggot passes through three larval stages and then forms a pupa, or cocoon. The adult fly emerges from the cocoon. Houseflies typically develop from egg to adult within 10 days. 

Multiple choice biology hygiene - a key to healthy life mosquitoes and malaria diseases caused by mosquitoes contaminated water spreads disease

The most common carrier of communicable diseases is

  1. Ant

  2. Housefly

  3. Dragonfly

  4. Spider
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The diseases, which spread from one person to another person or from animal to person are called as communicable diseases. It is also termed as infectious or contagious diseases. Housefly is a major factor in contributing communicable diseases. Housefly comes in contact with waste products and eatables. When it flies from wastes to eatables, it transports bacterial agents from wastes to eatables. Due to consumption of such eatables, the persons infected with microbes of various diseases, person gets sick.