Tag: plant habitat

Questions Related to plant habitat

The bats are able to fly in dark since their mouth produce

biology environmental science plant adaptation adaptation in plants plant habitat

  1. Sound waves

  2. Ultrasonic waves

  3. Infrared rays

  4. Ultraviolet rays

Show answer
Correct Option: B
Explanation:
Every night a bat puts in 600-700 kilometres of airtime. Flying low, the animals catch insects at speeds of around 40 metres per second. At night the bat uses its hearing to navigate its way to prey. Bats catch insects continuously using echolocation, an advanced navigation system. The bat emits ultrasonic waves with very high frequencies. Its calls are pitched at 20-100 kilohertz, a frequency that is too high-pitched for humans to hear naturally. Their sounds are reflected in the environment, hitting various objects and returning to the bat as echoes. The echo signals enable the bat to form a mental map of its surroundings.
So the correct option is 'ultrasonic waves'.

Belt's corpuscles occur on

botany ecological adaptations, succession and ecological services plant adaptation adaptation in plants plant habitat importance and classification of angiosperms

  1. Casuarina roots

  2. Casuarina leaves

  3. Leaves of Acacia sphaerocephala

  4. Roots of Acacia sphaerocephala

Show answer
Correct Option: C
Explanation:

Belt's corpuscles are certain corpuscles containing food secreted by the plants at the tips of their leaflets for ants to maintain myrmecophily. They are seen in leaves of acacia sphaerocephala as it is a myrmecophile.

So, the correct answer is 'Leaves of Acacia sphaerocephala'.

Which of the following is wrong about xerophytes?

botany ecological adaptations, succession and ecological services plant adaptation adaptation in plants plant habitat importance and classification of angiosperms

  1. Sunken stomata

  2. Small spiny leaves

  3. Thick cuticle

  4. Large number of stomata

Show answer
Correct Option: D
Explanation:

 Xerophytes show structural adaptations to discourage water loss through transpiration and increase water absorption. Such, adaptations include small spiny leaves, thick waxy cuticle on leaf surface, sunken stomata and well developed vascular tissue. Leaves show reduction in number of stomata to cut off transpiration losses of water. Also some succulents show 'Crassulacean Acid Metabolism (CAM)'. Their stomata open only during night.

Thus, the correct answer is option D.

The plants of this group are adapted to live partly in water and partly above substratum and free from water. Name the group.

botany ecological adaptations, succession and ecological services plant adaptation adaptation in plants plant habitat importance and classification of angiosperms

  1. Xerophytes

  2. Thalophytes

  3. Halophytes

  4. Hydrophytes

Show answer
Correct Option: C
Explanation:

Halophytes are plants adapted to grow in saline conditions. They grow in mangroves, coastal dunes and marshes. The environmental conditions are high salinity and high level of water. The lower parts of trees are permanently submerged in water and grow pneumatophores for gaseous exchange and respiration. The upper parts of these plants are not submerged and freely exposed to atmosphere.

Which of the following is not an adaptive feature of plants growing in physiologically dry soil?

botany ecological adaptations, succession and ecological services plant adaptation adaptation in plants plant habitat importance and classification of angiosperms

  1. Pneumatophore

  2. Vivivary

  3. Sunken stomata

  4. All of the above

Show answer
Correct Option: C
Explanation:

Physiologically dry soil means that water is present in soil but due to high levels of salt, it is not available to plants as plants cannot easily absorb the water present in soil. Such plants are called halophiles, e.g., mangrove plants like Sonnertia, Rhizophora, Avicennia etc. Such plants show several unique features such as presence of pneumatophores and vivipary. Sunken stomata is not shown by mangroves but is shown by xerophytes which grow in physically dry soil. Thus, the correct answer is option C.

Read the following statement and select the incorrect ones.
(i) Homeostasis ensures constant osmotic concentration of cells. 
(ii) The famous keolado National park (Bharatpur) in Rajasthan hosts thousands of migratory birds coming from Siberia, in every winter.
(iii) 99% of animals and nearly all plants are regulators.
(iv) The conformers are able to maintain their body temperature inspire of changes in ambient temperature. 

biology adaptation plant adaptation adaptation in plants plant habitat

  1. (i) and (ii)

  2. (ii) and (iii)

  3. (iii) and (iv)

  4. (i) and (iv)

Show answer
Correct Option: C
Explanation:

About 99 percent of animals and nearly all plants do not have a mechanism to maintain a constant internal body environment.Their body temperature changes with the surrounding temperature.They are called conformers.

Vikramshila Gangetic Dolphin Sanctuary, India's only dolphin sanctuary, is located in which among the following states of India?

biology adaptation plant adaptation adaptation in plants plant habitat

  1. West Bengal

  2. Bihar

  3. Assam

  4. Uttar Pradesh

Show answer
Correct Option: B

Which of the following is incorrect match?

$1$) Aquatic annelids possess lateral appendages which help in swimming Parapodia
$2$) Balance organs in aquatic and Aurelia Arthropods Statocyst
$3$) Spiders spins web by using Spinnerets
$4$) The body is supported by a proteinaceous skeleton in porifera Spicules
biology adaptation plant adaptation adaptation in plants plant habitat

  1. $1$

  2. $2$

  3. $3$

  4. $4$

Show answer
Correct Option: A

All the following statements are correct except:

biology adaptation plant adaptation adaptation in plants plant habitat

  1. Our National aquatic animal is Platanista( Indian Dolphin) found in Indus, Ganges and Brahmaputra rivers

  2. Chaetopleura is commonly known as chiton

  3. Electric organs are found in Trygon

  4. In birds endoskeleton is fully ossified

Show answer
Correct Option: A

What is oceans warming depth?

biology adaptation plant adaptation adaptation in plants plant habitat

  1. 2000m

  2. 1000m

  3. 3000m

  4. 7000m

Show answer
Correct Option: C