Tag: botany

Questions Related to botany

Free services provided to humans by ecosystems include

botany ecological adaptations, succession and ecological services ecosystem services ecosystems ecosystem

  1. control of atmospheric carbon dioxide concentration.

  2. prevention of soil erosion.

  3. filtering of pollutants from water and air.

  4. all of the above

Show answer
Correct Option: D
Explanation:
Ecosystem services are the products of ecosystem processes. These services include conditions and processes by which the species are able to survive and sustain their life. 
  • Trees control atmospheric carbon dioxide concentration because they take up carbon dioxide and perform photosynthesis through which they release oxygen in the atmosphere. Hence, quality of air is maintained by ecosystems.
  • The roots of plants held the soil particles tightly which prevent soil erosion.
  • Plants filter out pollutants from water and air by trapping pollutants. They absorb pollutants from air and water in their tissues. 
Hence, all the statements given in the question are correct.
So, the correct answer is 'All of the above'.

Thermal belts are usually found

botany ecological adaptations, succession and ecological services ecosystem services ecosystems ecosystem

  1. On valley floors

  2. On hillsides

  3. On mountain tops

  4. None of the above

Show answer
Correct Option: B

System involved in interconnection of living and non-living organisms is known as

botany ecological adaptations, succession and ecological services ecosystem services ecosystems ecosystem

  1. Biosphere

  2. Ecosystem

  3. Hydrosphere

  4. Atmosphere

Show answer
Correct Option: B

What does an ecosystems depend on?

botany ecological adaptations, succession and ecological services ecosystem services ecosystems ecosystem

  1. Solar Energy

  2. Consumers

  3. Producers

  4. Food chain

Show answer
Correct Option: A

The establishment of Taj Trapezium Zone (TTZ) enshrines which among the following objectives?

botany ecological adaptations, succession and ecological services ecosystem services ecosystems ecosystem

  1. Protection from Pollution

  2. Tourism Development

  3. Economy Hub

  4. Transportation facilities

Show answer
Correct Option: A

In which of the following universities "National Centre for Sustainable Coastal Zone Management" under the World Bank assisted Integrated Coastal Zone Management project is set up?

botany ecological adaptations, succession and ecological services ecosystem services ecosystems ecosystem

  1. Pondicherry University, Pondicherry

  2. Anna University, Chennai

  3. Utkal University, Bhubaneswa

  4. Andhra University, Visakhapatnam

Show answer
Correct Option: B

Aquatic ecosystem help in

botany ecological adaptations, succession and ecological services ecosystem services ecosystems ecosystem

  1. Reduce pollution

  2. Absorption of nutrients

  3. Recycle of nutrients

  4. Both A and B

Show answer
Correct Option: C
Explanation:

The aquatic ecosystem is the interaction of biotic component and abiotic component in the water body. It serves important environmental services such as recycling of nutrients, water purification, attenuate floods, recharge groundwater and provides shelter to wildlife. Aquatic ecosystems are also used for human recreation, and are very important to the tourism industry, especially in coastal regions. 

Which features are characteristic of insect-pollinated flowers?

botany ecological adaptations, succession and ecological services ecosystem services ecosystems ecosystem

  1. Bright petals, large feathery stigmas

  2. Bright petals, rough sticky pollen

  3. Large feathery stigmas, nectaries

  4. Small light pollen, nectarines

Show answer
Correct Option: B
Explanation:

Insect-pollinated flowers are large, have brightly coloured petals, often sweetly scented, usually contain nectar- to attract insects. Its pollen are often sticky or spiky - to stick to legs and body of  insects

So, the correct is 'bright petals, rough sticky pollen'

Mid latitude lakes undergo mixing more than equatorial lakes, select the correct reason.

botany ecological adaptations, succession and ecological services ecosystem services ecosystems ecosystem

  1. The midlatitude lakes turn over twice a year

  2. Midlatitude lakes develop a thermocline

  3. Water is densest at $4$

  4. All of the above

  5. They don't - equatorial lakes have more mixing

Show answer
Correct Option: C
Explanation:

Deep lakes at mid-latitudes have well-pronounced stratification which leads to the lakes experiencing wealthy internal waves dynamics. These lakes also possess seasonal water mixing during the spring and autumn transitional periods. This is due to the non-linear thermal expansion of water when its temperature reaches 4$^0$C and the density of water is maximum.  Further, with the increasing latitudes support the general cyclonic water circulation. Hence the large lakes along mid-latitudes show a large variety of these physical processes.

Identify the correct statement for freshwater ecosystems.
I. There is a seasonal mixing of materials.
II. During the year, oxygen concentrations are vertically uniform.
III. Materials are recycled more quickly than in ocean ecosystems.

botany ecological adaptations, succession and ecological services ecosystem services ecosystems ecosystem

  1. I only

  2. II only

  3. III only

  4. I and III 

  5. II and III 

Show answer
Correct Option: D
Explanation:

A Freshwater ecosystem is one of  the aquatic ecosystems of the earth and includes lakes, ponds, rivers, streams and wetlands. This ecosystem is essential as it not only provides human beings their drinking water, but these are also home to more than 40 percent of the world's fish species. The seasonal changes occur in the freshwater ecosystem with regards to temperature-density relationship and since it contains continuous running water so materials are recycled more quickly than in ocean ecosystems.

So, the correct answer is option D.