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Organisms and Populations

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Biology

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Biology

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CBSE Gujarat Board Haryana Board

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Class 10 Class 12

The table below gives the populations (in thousand) of ten species (A-J) in four areas (a-d) consisting of the number of habitats given within  brackets aginst each. study the table and answer the question which follows: 

Area and number of habitats

Species and their populations (in thousands) in the area

A

B

C

D

E

F

G

H

I

J

a(11)

b(11)

c(13)

d(12)

23

1.2

0.52

6.0

-

3.1

1.1

9.0

-

10.3

10.2

-

0.62

-

1.5

3.0

-

8.2

1.1

11.2

11.3

0.9

0.48

2.4

1.4

4.2

0.8

8.4

2.2

4.1

3.2

10.2

11.1

4.8

0.4

3.3

0.8

7.3

11.3

2.1

 Which area out of a to d shows maximum species diversity?

  • b

  • c

  • d

  • a


C.

d

Habitat is the place where an organism live. The population has been defined as a collective group of organisms of the same species occupying a particular place at a particular time. In the given table area d has maximum species diversity, as there are 10 species (A-J) reside in 12 habitats, while in area c the 10 species reside in 13 habitats so, exhibit less diversity than area d.

Habitat is the place where an organism live. The population has been defined as a collective group of organisms of the same species occupying a particular place at a particular time. In the given table area d has maximum species diversity, as there are 10 species (A-J) reside in 12 habitats, while in area c the 10 species reside in 13 habitats so, exhibit less diversity than area d.

332 Views

To live in groups is beneficial because :
  • feeling of security
  • can obtain food easily
  • Partner is available for mating
  • All the above

D.

All the above
878 Views

Ants give information to their companions :
  • by dancing
  • by secretion of pheromones
  • by making sound
  • by defecating

B.

by secretion of pheromones
697 Views

The number of births during a given period in the
population that are added to the initial density is 

 :
  • Natality
  • Mortality
  • Migration
  • Immigration

A.

Natality
587 Views

Population density is denoted by the symbol
  • N
  • D
  • M
  • D

A.

N
738 Views

The departure of a individual from a population is called :
  • Natality 
  • Mortality
  • Immigration 
  • Emigration

D.

Emigration
574 Views