Tag: adapting to a habit

Questions Related to adapting to a habit

Which of the following organisms are badly affected when large habitats are broken up into small fragment due to various human activities?

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

  1. Mammals requiring small territories

  2. Planktons showing diapause

  3. Animals with migratory habits

  4. Birds requiring small territories

Show answer
Correct Option: C
Explanation:

There are various causes of biodiversity losses. One of the reason is habitat loss and fragmentation. When large habitats are broken up into small fragments due to various human activities, mammals and birds requiring large territories and animals with migratory habits are badly affected. This results in the decline in their population.

Thus, the correct answer is 'Animals with migratory habits.'

During adverse season, 'therophytes' survive by

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

  1. Bulbs

  2. Tubers

  3. Rhizomes

  4. Seeds

Show answer
Correct Option: D
Explanation:
A. Bulbs are the modification of underground stems. They consist of a reduced discoid stem and several fleshy scales.
B. Tubers are the swollen underground stem developed at the growing tip of a branch.
C. Rhizomes are perennial, fleshy, dorsiventral and horizontal underground stem growing beneath the surface of the soil.
D. Seeds are small embryonic plants enclosed in a covering called the seed coat, usually with some stored food. Therophytes are the plants that can survive unfavorable conditions as seeds and germinate when conditions are favorable.
So, the correct answer is 'Seeds'.

' Pebble plant ' have 

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

  1. Leave modified to spines

  2. Leaves are absent

  3. Leaves are swollen

  4. Leaves modified to reduce transpiration

Show answer
Correct Option: A
Explanation:

Lithops plants or Pebble plant consist of one or more pairs of bulbous, almost fused leaves opposite to each other and hardly any stem. The slit between the leaves contains the meristem and produces flowers and new leaves. The leaves of Lithops are mostly buried below the surface of the soil, with a partially or completely translucent top surface known as a leaf window which allows light to enter the interior of the leaves for photosynthesis. 

So the above selected option is correct 

Consider the following statements (A) - (D) each with one or two blanks.
(A) Bears go into (a) during winter to (b) cold weather.
(B) A conical age pyramid with a broad base represents (c) human population.
(C) A wasp pollinating a fig flower is an example of (d)
(D) All area with high levels of species richness is known as (e) 
Which one of the following options gives the correct fill ups to the respective blank numbers from (a) to (e) in the statements.

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

  1. (b)- Stable, (d)- Commensalism, (a)- Mesh

  2. (a)- Aestivation, (d)- Escape, (c)- Stable, (d)- Mutualism

  3. (c)- Expanding, (d)- Commensalism, (e)- Biodiversity park

  4. (a)- Hibernation, (b)- Escape, (c)- Expanding, (d)- Obligate mutualism

Show answer
Correct Option: D
Explanation:

Bears usually go into hibernation (a) during winter to escape (b) cold weather. (Hibernation is a state of inactivity and metabolic depression in endotherms. Hibernation refers to a season of heterothermy that is characterized by low body temperature, slow breathing and heart rate, and low metabolic rate.)

A conical age pyramid with a broad base represents expanding (c) human population. It shows high population growth.
A wasp pollinating a fig flower is an example of obligate mutualism (d). (It is a type of mutualism in which the species involved are in close proximity and interdependent with one another in a way that one cannot survive without the other.)
All area with high levels of species richness is known as biodiversity park (e).
Therefore, the correct answer is option D.

The biological adaptation that allows frogs to obtain water for their survival during conditions of water scarcity is the

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

  1. Presence of modified tongue that acts like a sponge to suck water from damp soils

  2. Presence of water channels in the skin by which they absorb water from their surroundings

  3. Presence of ciliated oesophagus that helps in separating water from ingested particular matter

  4. Selective feeding on plants with large amount of water that would fulfill the water requirement

Show answer
Correct Option: B
Explanation:

In the conditions of water scarcity, the frogs show biological adaptation to reduce water loss or obtain water from the surroundings. The skin is modified to contain water channels. The water is absorbed from the surroundings through the skin and the water channels makes the water available for the survival. 

Thus, the correct answer is option B.