Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • School
  • (a) Following are the responses of different animals to various abiotic factors. Describe each one with the help of an example.      (i)  Regulate      (ii)  Conform

(a) Following are the responses of different animals to various abiotic factors. Describe each one with the help of an example.

     (i)  Regulate

     (ii)  Conform

     (iii) Migrate

     (iv) Suspend 


(b) If 8 individuals in a population of 80 butterflies die in a week, calculate the death rate of population of butterflies during that period. 

 

 

 

 
 
 
 
 

Answers (1)

i) REGULATE- Some organisms are able to maintain homeostasis by physiological (sometimes behavioural also) means which ensures constant body temperature, constant osmotic concentration, etc. Example- All birds and mammals, and a very few lower vertebrate and invertebrate species are indeed capable of such regulation (thermoregulation and osmoregulation).

ii) CONFORM- Nearly all plants cannot maintain a constant internal environment. Their body temperature changes with the ambient temperature. In aquatic animals, the osmotic concentration of the body fluids change with that of the ambient water osmotic concentration. These animals and plants are simply conformers. Examples- Frogs and polar beers.

iii)MIGRATE- The organism can move away temporarily from the stressful habitat to a more hospitable area and return when stressful period is over. Many animals, particularly birds, during winter undertake long-distance migrations to more hospitable areas. Example-Every winter the famous Keolado National Park (Bhartpur) in Rajasthan host thousands of migratory birds coming from Siberia and other extremely cold northern regions.

iv) SUSPEND- In bacteria, fungi and lower plants, various kinds of thick walled spores are formed which help them to survive unfavourable conditions – these germinate on availability of suitable environment. In higher plants, seeds and some other vegetative reproductive structures serve as means to tide over periods of stress besides helping in dispersal – they germinate to form new plants under favourable moisture and temperature conditions. They do so by reducing their metabolic activity and going into a date of ‘dormancy’. Example- fish and snails

b) Death rate is defined as the ratio of the number of deaths occurring in a population of a particular area during a particular period of time. If 8 individuals in a population of 80 butterflies die in a week, Death rate in the population is given by \frac{8}{80} = 0.1individuals per week.

Posted by

Priyanka Kumari

View full answer

Crack CUET with india's "Best Teachers"

  • HD Video Lectures
  • Unlimited Mock Tests
  • Faculty Support
cuet_ads

Similar Questions

Trending Articles/News

anam-khan

CBSE Class 12 board exams 2025 to have 50% competency-based questions; no change in 10th
anam-khan

CBSE Class 12 board exams 2024 over; expected result date, trends of last 10 years
anam-khan

CBSE Class 12 accountancy board exam analysis 2024 out; paper rated easy, balanced

Latest Question