Tag: botany

Questions Related to botany

Which one is not a trait of xerophytes ?

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

  1. Thick cuticle

  2. Sunken stomata

  3. Aerenchyma

  4. Well developed mechanical tissue

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Correct Option: C
Explanation:

Xerophytes are made up of thick cuticles and contains parenchymal tissues. It does not contain Aerenchyma.

In xerophytes, photosynthesis often occurs through

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

  1. Root

  2. Modified stem

  3. Stomata

  4. Scaly leaves

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Correct Option: B

Which ones develop characteristics of xerophytes?

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

  1. Hydrophytes

  2. Sciophytes

  3. Heliophytes

  4. Halophytes

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Correct Option: D

Cacti storing water in leaves are

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

  1. Ephemerals

  2. Drought resistant

  3. Annualsx

  4. Non-succulents

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Correct Option: B

A succulent xerophyte is

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

  1. Capparis

  2. Calotropis

  3. Agave

  4. None of the above

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Correct Option: C

Which of the following is a xerophyte?

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

  1. Capparis

  2. Lotus

  3. China rose

  4. Casuarina

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Correct Option: A

Mechanical tissue is best developed in

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

  1. Hydrophytes

  2. Halophytes

  3. Xerophytes

  4. Mesophytes

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Correct Option: C

Sunken stomata occur in

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

  1. Xerophytes

  2. Hydrophytes

  3. Mesophytes

  4. Opsanophytes

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Correct Option: A

Which of the following is a xerophytic plant in which the stem is modified into a flat green and succulent structure?

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

  1. Casuarina

  2. Opuntia

  3. Hydrilla

  4. Acacia

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Correct Option: B
Explanation:
Opuntia is a plant growing in dry and xeric habitats and it has a stem containing several nodes and internodes. It is modified into a flat, fleshy and thick green leaf-like structure called phylloclade. which performs the functions of photosynthesis. The leaves gets modified into spines to help in reducing transpiration.

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

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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.