An ecosystem consists of :

(1) producers, consumers and decomposers in a particular area.

(2) all the plants and animals of an area.

(3) a living community and its environment.

(4) carnivorous and herbivorous of an area

Which one of the following is a greenhouse gas?

(1) Oxygen

(2) Nitrogen

(3) Carbon-di-Oxide

(4) Ozone

An ecological system is a

(1) Biological system

(2) Biogeochemical system

(3) Physicochemical system

(4) Bioecological system

In predation between

i. A lion and a deer

ii. A snake and a frog

iii. A lizard and an insect and

iv. An owl and a rat Which predator will have greater control over its prey?

(1) Lion

(2) Owl

(3) Snake

(4) Lizard

After which one of the following tribes of India, has a large continent of ancient geological history of the world been named?

(1) Santhals

(2) Bhils

(3) Marias

(4) Gonds

The evergreen rain forest is mainly found in regions having well-distributed annual rainfall

(1) Below 50 cm

(2) 50-100 cm

(3) 100-200 cm

(4) More than 200 cm

Mangrove forests occur in

(1) high mountains

(2) snowy plains

(3) coastal swamps

(4) interior plateaus

To which natural vegetation belt do Sal and Teak trees belong ?

(1) Temperate forests

(2) Equatorial forests

(3) Tropical deciduous forests

(4) Mixed forests

The distribution of characteristic vegetation of a region is determined mainly by

(1) soil, water, and temperature

(2) water, greenhouse effect, and altitude

(3) wind, water, and latitude

(4) sunlight, water, and wind

What makes an ecosystem ?

(1) A living community and its environment

(2) All the plants and animals of an area

(3) Carnivores and herbivores of an area

(4) Producers, consumers and decomposers in a particular locality

The Source of energy in the ecosystem is

(1) Sun

(2) Green plants

(3) Sugar produced in photosynthesis

(4) ATP