Tag: ecological adaptations, succession and ecological services

Questions Related to ecological adaptations, succession and ecological services

An adaptation of plants to water scarcity and high temperature is

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

  1. Succulent stem stores water

  2. Poorly developed root

  3. They shed their leaves

  4. In unfavourable season, plants survive in dormant state as seeds

Show answer
Correct Option: A
Explanation:
  • Water storage in stem and tubers is an adaptation of plants to thrive in harsh environments with high temperatures and scarce water. Such plants called xerophytes usually develop succulent stems that can store water.
  • They have a very extensive root system to absorb the maximum amount of water from the soil.
  • Other adaptations include thick waxy cuticle, reduced leaf size, densely packed leaves, reduced number of stomata in pitted and grooved positions.

Vegetation of geographic region with low rainfall, high temperature, loose and sandy soil is of the type called

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

  1. Grassland

  2. Scrub forest

  3. Xerophytic

  4. Evergreen tropical forest

Show answer
Correct Option: C
Explanation:

Vegetation of geographic region with low rainfall, high temperature, loose and sandy soil is of the type called xerophytic vegetation. It consists of spiny shrub, cactus. Caatinga is a type of xerophytic vegetation.

Thus, the correct answer is 'Xerophytic.'

Which of the following is not an example of adaption in Xerophyte:

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

  1. CAM pathway

  2. Thick cuticle

  3. Absence of stomata

  4. Leaves reduces to spine

Show answer
Correct Option: C
Explanation:

A xerophyte is the species of plants, that has the special characters to adapt in the environment with little water. Xerophytes plant have a thick waxy cuticle on the stem and leaves. This waxy cuticle reduces the water evaporation. In xerophytic plants, sunken stomata are present. which open during the night to prevent the water loss. To adapt in this environment, xerophytic plants leaves reduces into spines, which reduces the surface area of the leaf and reduces the amount of transpiration. The xerophytic plant makes their food through the CAM pathway.

So, the option is ' Absence of stomata '

Opuntia has spine like leaves which help in 

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

  1. Reducing the rate of transpiration

  2. Increasing the rate of transpiration

  3. Increasing the rate of photosynthesis

  4. Reducing the rate of photosynthesis

Show answer
Correct Option: A
Explanation:
Opuntia has spine which are highly modified leaves. Spines help prevent water loss by reducing the rate of transpiration.
So, the correct option is 'Reducing the rate of transpiration'

'Pebble plant' have _____________.

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

  1. Leaves modified to spines

  2. Leaves are absent

  3. Leaves are swollen

  4. Leaves modified to reduce transpiration

Show answer
Correct Option: A
Explanation:

Lithops (stone-faced as the plants appear stone-like)  is a genus of succulent plants in the ice plant family, Aizoaceae. They avoid being eaten by blending in with surrounding rocks and are often known as pebble plants or living stones. These are small succulent plants that survive in their harsh environment by having much of the plant body below ground. Each individual plant consists of two succulent leaves fused together in the shape of an inverted cone (although some species will produce multi-headed plants). The fissure at the top of the plant is the division between the two leaves and is spine-like. 

So, the correct answer is 'leaves modified to spines'.

A plant with succulence in both stem (chylocauly) and roots (chylorhizy) is ___________.

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

  1. Ceiba

  2. Opuntia

  3. Asparagus

  4. Euphorbia

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Correct Option: A

Xerophytes are plants which grow in ____________.

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

  1. Dry areas

  2. Water

  3. Place where land and water meet

  4. Land

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Correct Option: A

Vegetation of Rajasthan is

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

  1. Xerophytic

  2. Alpine

  3. Arctic

  4. Deciduous

Show answer
Correct Option: A
Explanation:

Vegetation of Rajasthan is xerophytic. It is a geographic region with low rainfall, high temperature, loose and sandy soil. It consists of spiny shrub, cactus. Caatinga is a type of xerophytic vegetation.

Thus, the correct answer is 'Xerophytic.'

After the destruction of forests, what type of vegetation is expected to develop?

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

  1. Xerophytes vegetation

  2. Scrub vegetation

  3. Grassland vegetation

  4. Evergreen vegetation

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Correct Option: A

The most common organic solute stored by xerophytes for maintaining osmotic and water potential is

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

  1. Glucose

  2. Sucrose

  3. Raffinose

  4. Proline

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Correct Option: D