Tag: ecological adaptations, succession and ecological services

Questions Related to ecological adaptations, succession and ecological services

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

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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

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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

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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

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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

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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 

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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.

Who have tried to put price tags on natures life support services?

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

  1. Robert Constanga et al

  2. Nile Perch et al

  3. Herbert Boyer et al

  4. Ram Deo Misra et al

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Correct Option: A
Explanation:

Robert Constanga et al have tried to put price tags on natures life support services. He gave price tags to the ecosystem services. Out of these services, 50% accounts for the soil formation. The ecosystem services he put price on includes purify water and air, mitigate droughts and floods, nutrient cycling, habitat for wild life.

Thus, the correct answer is 'Robert Constanga et al.'

Plants growing in dry habitat are 

botany ecological adaptations, succession and ecological services extreme adaptations adapting to a habit adaptive features aquatic plant adaptations pollination through water

  1. Lithophytes

  2. Mesophytes

  3. Hydrophytes

  4. Xerophytes

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Correct Option: D

Which combination of the statements is incorrect for the adaptation in cactus?

botany ecological adaptations, succession and ecological services extreme adaptations adapting to a habit adaptive features aquatic plant adaptations pollination through water

  1. The cactus plants store water in their stems which carries out photosynthesis and is covered by the cuticle.

  2. Spines are the modified leaves of the cactus plant. Which reduce the loss of water through transpiration.

  3. The cactus plants have very short roots which cannot properly absorb water from the soil.

  4. The cactus plants lose a huge amount of water through transpiration so they cannot survive in deserts for a long time.

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Correct Option: C,D
Explanation:

The succulent stem of the cactus plants usually store water and carry out photosynthesis also. The cactus stem contains a tough and waxy outer layer, called cuticle. The cactus plants possess modified leaves shaped like thin spines or thorns that decrease water loss through transpiration. 

The cactus plants contain long roots that efficiently absorb water from the ground. Due to the low transpiration rate, the cactus plants can remain alive in deserts for a longer period of time. 
So, the options C, The cactus plants have very short roots which cannot properly absorb water from the soil and D, The cactus plants lose a huge amount of water through transpiration so they cannot survive in deserts for a long time are incorrect for the adaptation in cactus. 
 

Stomata open at night and close during day in

botany ecological adaptations, succession and ecological services extreme adaptations adapting to a habit adaptive features

  1. Xerophytes

  2. Gametophytes

  3. Mesophytes

  4. Hydrophytes

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Correct Option: A
Explanation:

Stomata in xerophytes open in night and remain close during day to prevent loss of water through transpiration.