Classification and Characteristics of Living Organisms

Section 3: Classification and Characteristics of Living Organisms

All living organisms require ________ to get energy.

(a) Water

(b) Food

(c) Soil

(d) Sunlight

Answer: (b)

Which of the following is a characteristic of living things?

(a) They do not grow

(b) They do not respond to stimuli

(c) They excrete waste

(d) They are always stationary

Answer: (c)

Changes in our surroundings that make us respond to them are called:

(a) Reflexes

(b) Stimuli

(c) Habits

(d) Adaptations

Answer: (b)

The process of getting rid of waste by living organisms is:

(a) Respiration

(b) Nutrition

(c) Excretion

(d) Reproduction

Answer: (c)

Which of these do not show the characteristic of growth?

(a) A kitten

(b) A sapling

(c) A piece of rock

(d) A human baby

Answer: (c)

Plants respond to light by:

(a) Growing away from it

(b) Closing their flowers at night

(c) Bending towards the source of light

(d) Both (b) and (c)

Answer: (d)

Which of the following is a non-living thing that shows some characteristics of living things?

(a) Chair

(b) Cloud

(c) Table

(d) Stone

Answer: (b)

Earthworms breathe through their:

(a) Lungs

(b) Gills

(c) Skin

(d) Nose

Answer: (c)

The life span of an organism is the time between its:

(a) Birth and reproduction

(b) Birth and natural death

(c) Childhood and old age

(d) Birth and growth

Answer: (b)

Biological classification helps us to:

(a) Confuse different species

(b) Study organisms systematically

(c) Make organisms look different

(d) Identify only plants

Answer: (b)

The basic unit of life is the:

(a) Tissue

(b) Organ

(c) Cell

(d) Organ system

Answer: (c)

Living organisms that consist of only a single cell are called:

(a) Multicellular

(b) Unicellular

(c) Non-cellular

(d) Bi-cellular

Answer: (b)

Which organ in fish helps them use oxygen dissolved in water?

(a) Lungs

(b) Fins

(c) Gills

(d) Scales

Answer: (c)

Photosynthesis in cactus plants is usually carried out by the:

(a) Leaves

(b) Roots

(c) Stem

(d) Spines

Answer: (c)

Which of the following is a characteristic shared by both a car and a living being?

(a) Reproduction

(b) Respiration

(c) Movement

(d) Growth

Answer: (c)