Tag: adaptive features

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Questions Related to adaptive features

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

Vegetation of Rajasthan is

  1. Xerophytic

  2. Alpine

  3. Arctic

  4. Deciduous
Reveal answer Fill a bubble to check yourself
A Correct answer
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.'

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

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

  1. Xerophytes vegetation

  2. Scrub vegetation

  3. Grassland vegetation

  4. Evergreen vegetation
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

When forests are destroyed, the soil often loses its moisture-retaining capacity and becomes exposed to harsh sun, leading to the development of xerophytic vegetation.

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

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

  1. Glucose

  2. Sucrose

  3. Raffinose

  4. Proline
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Proline is a common compatible solute (osmolyte) accumulated by plants, especially xerophytes and halophytes, to maintain osmotic balance and protect cellular structures under drought stress.

Multiple choice biology adapting to a habit extreme adaptations adaptive features adaptations of organisms

Heliophytes differ from sciophytes in having

  1. Shorter internodes and thicker leaves

  2. Longer internodes and thinner leaves

  3. Shorter internodes and thinner leaves

  4. Longer internodes and thicker leaves
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Heliophytes (sun plants) typically exhibit adaptations to high light intensity, including thicker leaves to store more chlorophyll and shorter internodes to maintain a compact structure. Sciophytes (shade plants) generally have thinner leaves to maximize light absorption in low-light conditions and longer internodes to reach for light.

Multiple choice biology adapting to a habit extreme adaptations adaptive features adaptations of organisms

Match column I with column II

   Column I    Column II
 A.  Halophytes  1.  Saline soil
 B.  Psammophytes  2.  Sandy soil
 C.  Chasmophytes  3.  Rock crevices
 D.  Oxylophytes  4.  Acidic soil

  1. A- 1, B- 2, C- 3, D- 4

  2. A- 1, B- 3, C- 2, D- 4

  3. A- 1, B- 4, C- 3, D- 2

  4. A- 1, B- 3, C- 4, D- 2
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
   Column I  Column II
 A.  Halophytes  Saline soil
 B.  Psammophytes  Sandy soil
 C.  Chasmophytes  Rock crevices
 D.  Oxylophytes  Acidic soil

Hence, option A is correct.

Multiple choice biology adapting to a habit extreme adaptations adaptive features adaptations of organisms

Tall trees of what range of height have strong butresses at their base?

  1. 5-7 m

  2. 15 m and above

  3. 3-5 m

  4. 7-10 m
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The trees having a height 15 m and above have strong buttresses at their base. Buttresses are modified roots appear from the basal parts of main stem and spread in different directions in the soil, eg, Ficus, Bombax, etc. Thus the correct answer is option B.

Multiple choice biology adapting to a habit extreme adaptations adaptive features adaptations of organisms

Shade plants have low

  1. Photosynthetic activity

  2. Respiratory rate

  3. Metabolic activity

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

Shade plants (sciophytes) are adapted to low-light environments, which results in lower overall metabolic rates, including reduced photosynthetic and respiratory activity compared to sun-loving plants. Because they operate at lower energy levels, all these metabolic processes are typically lower.

Multiple choice biology adapting to a habit extreme adaptations adaptive features adaptations of organisms

The leaves of desert plants are not torn away by high wind velocity because of

  1. Spines

  2. Bending towards opposite side

  3. Sclerenchymatous tissue that provides extra mechanical support

  4. Tearing of corners while the middle remains saved
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Desert plants often develop sclerenchymatous tissues, which are rigid, dead cells that provide significant mechanical strength and structural support. This reinforcement helps the leaves withstand high wind velocities without tearing.