Olympiad Science - Living Organisms and their surroundings
Exam Duration: 45 Mins Total Questions : 30
How does a chameleon protect itself from its enemies?
- (a)
By changing the colour of its body
- (b)
By releasing bad small
- (c)
It has a hard shell on its body
- (d)
By curling its body
Which is the major component of the living environment?
- (a)
Water
- (b)
Soil
- (c)
Trees
- (d)
Ponds
The following is a list of some plants and the habitat in which they live. Which option is mismatched?
- (a)
Mangroves - marshy areas
- (b)
Coconut - hot and damp places.
- (c)
Cactus - wet areas
- (d)
Mango - plains
Which term means 'Adjustment to environment'?
- (a)
Adaptation
- (b)
Mimicry
- (c)
Hibernation
- (d)
Aestivation
Which option is not an adaptation of animals living in polar regions?
- (a)
Wide and large paws
- (b)
Layer of fat under skin
- (c)
Thin skin with scales
- (d)
Strong sense of smell
Which of these help polar bears adapt to live in extreme cold climate?
- (a)
White fur, fat below skin, keen sense of smell
- (b)
Long tail, blunt claws, thin skin, paws.
- (c)
White body, paws for swimming,gills for respiration.
- (d)
Thin skin, large eyes, white fur
Which adaptation helps the camel to survive in hot and dry desert?
- (a)
It has a layer of fat under its skin
- (b)
It sleeps during the day and is active at night
- (c)
It stores fat in its hump which can be broken down when it need energy
- (d)
It stores water in its long neck
Which of the following is represented by "X" in the figure given below?
- (a)
Ocean
- (b)
Island
- (c)
Grassland
- (d)
Snow land
Which characteristic of living things is also shown by a car?
- (a)
Response to changes
- (b)
Need of energy
- (c)
Reproduction of its kind
- (d)
Taking in gases
Which pair has not been correctly paired
- (a)
Camel - Desert
- (b)
Germs - Air
- (c)
Polar bear - Snow
- (d)
Whale - River
In which habitat, animals with thick fur are most likely to be found?
- (a)
Grassland
- (b)
Mountain
- (c)
Desert
- (d)
Ocean
Which organism depends on abiotic components for food?
- (a)
Insects
- (b)
Birds
- (c)
Plants
- (d)
Fish
The earth has so many different types of plants and animals. Which word best describes the above statement?
- (a)
Division
- (b)
Diversity
- (c)
Similarity
- (d)
Tropical
Shreya touched a hot kettle and quickly pulled her hand away. Which characteristic is proved by the given statement?
- (a)
Reproduction
- (b)
Response to stimuli
- (c)
Growth
- (d)
Respiration
Which option is made from something that was once alive?
- (a)
Aluminum foil
- (b)
Leather purse
- (c)
Plastic bag
- (d)
Glass bottle
Which feature of the tortoise helps it to have few predators?
- (a)
Big feet
- (b)
Little eyes
- (c)
Thick shell
- (d)
Large mouth
Plants tend to loose a lot of water in hot weather.which of the following helps plants to save water?
- (a)
Shedding leaves
- (b)
Having more leaves
- (c)
Having broad leaves
- (d)
All of these
Which of the following is NOT an adaptation for the polar bear to live in the arctic region?
- (a)
It has a thick coat of fur
- (b)
It has a layer of insulating fat under its skin
- (c)
It has two thick layers of fur
- (d)
It has short and blunt claws
Which of these plants is usually weak stemmed with numerous air spaces and very thin long and waxy coated leaves
- (a)
Mesophytes
- (b)
Xerophytes
- (c)
Bryophytes
- (d)
Hydrophytes
Which of the following options comprises various stages in the life of an organism in proper sequence?
- (a)
Birth, reproduction, growth, death.
- (b)
Growth, reproduction, birth, death
- (c)
Birth, reproduction, death, growth
- (d)
Birth, growth, reproduction, death
Which of the following is paired correctly
- (a)
Desert - Dolphin
- (b)
Aquatic - Giraffe
- (c)
Terrestrial - whale
- (d)
Terrestrial - deer
Shivani took a few gram seeds and allowed them to germinate in an openjar.
In which direction does the plumule grow?
- (a)
upwards
- (b)
the direction is not fixed
- (c)
downwards
- (d)
sideways
How does water as an abiotic factor affect the living world?
- (a)
Water acts as a habitat for many living organisms.
- (b)
Water is a limiting factor in deserts and dry areas, so organisms adapt to water shortage in various ways.
- (c)
Water dissolves oxygen and carbon dioxide which are used by aquatic organisms.
- (d)
All of these.
Habitat refers to the dwelling place of an organism. What is the habitat of mangrove trees?
- (a)
the coastal area of West Bengal and Orissa
- (b)
the Sunderbans area
- (c)
the saline water
- (d)
all of these
A fish is able to live in aquatic habitat because of
- (a)
streamlined body.
- (b)
presence of gills for breathing in water.
- (c)
presence of flat fins and tail.
- (d)
all of these.
Desert is a terrestrial habitat. Cactus, camel, desert rats easily live in desert even though water is a limiting factor. They are able to survive as
- (a)
they have the right adaptations for survival in deserts
- (b)
they conserve body water and minimise its loss.
- (c)
they are not much dependent on external sources of water.
- (d)
all of these
Plants handle wastes from their bodies by
- (a)
storing them in a way that no harm is caused to the plant.
- (b)
removing some wastes as secretions.
- (c)
oxygen, a by-product of photosynthesis is removed through tiny pores in the leaves called stomata.
- (d)
all of these
Select the right match
| Column I | Column II |
| i) rose | A) folding of leaves when the plant is touched |
| ii) mimosa | 8) day and night |
| iii) respiration | C) cutting |
- (a)
i-C; ii-A; iii-8
- (b)
i-8; ii-A; iii-C
- (c)
i-A; ii-8; iii-C
- (d)
i-8; ii-C; iii-A
The changes in the surroundings occur due to
- (a)
change in weather.
- (b)
change of place due to movement.
- (c)
coming of new species in the surroundings.
- (d)
all of these.
A frog is an amphibian. It needs to live in moist environment near water. It
- (a)
can breathe through its skin.
- (b)
has webbed feet and its hind limbs are long
- (c)
has a long sticky tongue.
- (d)
has all of the above characteristics.
