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Biology Revision

Total questions: 81

Worksheet time: 1hrs 21mins

Name
Class
Date
1.

________________ has the record of all endangered and extinct species.

a)

Black data book

b)

Red data book

c)

Green data book

d)

Yellow data book

2.

Lowering down of ground water level in an area is caused by _______________.

a)

reforestation

b)

afforestation

c)

deforestation

d)

soil erosion

3.

Which of the following is a feature of afforestation?

a)

It involves felling of trees.

b)

It decreases atmospheric temperature.

c)

It leads to ecological imbalance.

d)

It increases soil erosion.

4.

Which of the following statements given in the table below are reasons for migration of birds?

a.Birds like to travel and explore.

b.Birds need areas that can take care of their feeding.

c.Birds need safer places to lay eggs

d.Birds migrate due to climatic reasons

a)

a and b

b)

a and c

c)

a and d

d)

a,b and c

5.

________________act is aimed at preservation and conservation of natural forests and meeting the basic needs of the people living in or near the forests.

a)

The Indian Preservation Act

b)

The Indian Preservation Act

c)

The Indian Conservation Act

d)

The Forest Conservation Act

6.

The existence of diverse variety of plants and animals living in region is called........................

a)

Species

b)

Flora

c)

Fauna

d)

Biodiversity

7.

Oil spill is a threat to organisms living in ..........................

a)

Forests

b)

Deserts

c)

Seas

d)

Plains

8.

Relationship between a biotic community and an abiotic environment is called...............

a)

Biodiversity

b)

Ecosystem

c)

Symbiosis

d)

Survival

9.

Loss of biodiversity is also because of ................ in human population.

a)

Increase

b)

Decrease

c)

Spread

d)

Fight

10.

An international body to study and assess the global conservation status of plants and animal species is

a)

WHO

b)

UNICEF

c)

UNO

d)

IUCN

11.

Dodo bird is an example of .....................species.

a)

Extinct

b)

Endangered

c)

Vulnerable

d)

Rare

12.

Group of organisms of the same species forms a ...............

a)

Species

b)

Population

c)

Biosphere

d)

Community

13.

All the different kind of plants living in their natural surroundings are called the .........of that place

a)

Flora

b)

Fauna

c)

Both of these

d)

None of these

14.

Which of these is a migratory bird?

a)

Crow

b)

Pink headed duck

c)

Peacock

d)

Arctic tern

15.

Jim Corbett National Park is known for conservation of.............

a)

Tigers

b)

Lions

c)

Elephants

d)

Rhinoceros

16.

Which of the following activities cannot help in conservation?

a)

Natural Disasters

b)

Recycling of polythene

c)

Recycling of metal

d)

Recycling of cardboard

17.

Illegal hunting of wild animals for commercial uses is called

a)

Pollution

b)

Conservation

c)

Poaching

d)

None of these

18.

Sanctuary is a place where

a)

Animals are protected

b)

Plants are protected

c)

Office of forest department

d)

Both plants and animals are protected

19.

Part of earth which supports the biodiversity is called

a)

Biosphere

b)

Sanctuary

c)

Ecosystem reserve

d)

Biotic community

20.

The consumer that feeds on plants or producers is known as

a)

consumer

b)

carnivores

c)

herbivores

d)

producer

21.

Rabbit eats the grass and the fox eats the rabbit, so the fox is

a)

prey

b)

primary consumer

c)

secondary consumer

d)

omnivores

22.

A consumer that feeds on other animals are known to be

a)

decomposer

b)

herbivores

c)

producer

d)

carnivores

23.

Likely to face injury or danger.

a)

vulnerable

b)

recover

c)

extinction

24.
Species that are only found in a specific geographic area are _______.
a)
Introduced species
b)
Local species
c)
Endemic 
d)
Biodiversity hot spot
25.

What is the basic cause of deforestation?

a)

Procuring land for cultivation

b)

Building houses and factories

c)

Making furniture or using wood as fuel

d)

All of above

26.

What is the cause of droughts ?

a)

The increase in temperature of earth disturbs the water cycle and may reduce rainfall.

b)

Due to the change in the soil property in forest.

c)

Due to decrease in water holding capacity of soil.

d)

Due to increasing the level of carbon dioxide in atmosphere.

27.

What do you mean by biosphere reserve?

a)

Area where animals are protected from the any disturbance to them and their habitat.

b)

Area reserved for the wildlife where they can freely use the habitats and natural resources.

c)

large area of protected land for the conservation of wildlife plant and animal resources and traditional life of the tribals living in the area.

d)

None of them.

28.

Full form of IUCN

(a)  

29.

The middle zone of a biosphere reserve is called

(a)  

30.

A group of individual organisms capable of interbreeding and producing offsprings is called

(a)  

31.
Why are bacteria necessary to life?
a)
used in nitrogen fixation
b)
they are decomposers
c)
they help human digestion
d)
all of these
32.
Nitrogen-fixing bacteria are important because...
a)
they are decomposers
b)
they are salt lovers
c)
they provide protection for plants from diseases
d)
they make nitrogen available to plants in form they can use
33.
How do bacterium reproduce?
a)
binary fission
b)
sexually by the lytic cycle
c)
releasing spores
d)
through mitosis
34.
All viruses contain this.
a)
nucleus and DNA or RNA
b)
DNA or RNA and protein coat
c)
protein coat and nucleus
d)
cell wall and DNA or RNA
35.
Fungi are able to make their own food by photosynthesis.
a)
True
b)
False
36.
This microorganism is shaped like a slipper
a)
Amoeba
b)
Paramecium
c)
Euglena
d)
Volvox
37.
This microorganism has characteristics of both animal and plant.
a)
Amoeba
b)
Paramecium
c)
Euglena
d)
Volvox
38.
What microorganism makes cheese?
a)
Fungi
b)
Virus
c)
Bacteria
d)
Algae
39.
Which of the following help bread rise?
a)
algae
b)
bacteria
c)
yeast
d)
fungi
40.
The diagram shows an animal cell. Which structure controls what enters and exits the cell?
a)
1
b)
2
c)
3
d)
4
41.
In which organelle is the DNA of the cell located?
a)
lysosome
b)
mitochondrion
c)
nucleus
d)
vacuole
42.
How do bacteria help our bodies function?
a)
They make our muscles stronger.
b)
They help to digest food.
c)
They circulate in our blood and help carry oxygen.
d)
They make our skin clean.
43.
What important function do microorganisms play in an ecosystem?
a)
They produce food from sunlight
b)
They reduce the number of big animals
c)
They decompose dead organisms
d)
They help to clean the air.
44.
Which instrument would you use to study microorganisms?
a)
thermometer
b)
microscope
c)
telescope
d)
kaleidoscope
45.
Harmful microorganisms can be controlled by
a)
washing hands with water
b)
washing hands with soap and water
c)
sharing food with your friends
d)
leaving food out of the refrigerator for long periods of time
46.
In what conditions do  most bacteria grow best?
a)
warm and moist
b)
cool and dry
c)
warm and dry
d)
cool and moist
47.
A disease causing organism
a)
pathogen
b)
poison
c)
vaccine
48.
All bacteria are
a)
unicellular
b)
multicellular
c)
eukaryotic
49.
Bacteria are prokaryotes which means they
a)
have a nucleus on their capsule
b)
do not contain a nucleus
c)
can live in environments with and without oxygen
50.
True or False: Another name for a bacteria is a pathogen
a)
False
b)
True
51.
The flu is caused by
a)
bacteria
b)
virus
52.
Bacteria cells are exactly like animal cells
a)
True
b)
False
53.
Live bacteria are found in milk, cheese and yogurt
a)
True
b)
False
54.
The name of a bacteria can be described by its shape
a)
False
b)
True
55.
Viruses are...
a)
prokaryotic
b)
eukaryotic
c)
non-living
d)
endospores
56.
Cell in which a virus reproduces
a)
endospore
b)
host cell
c)
bacteriophage
d)
plasmid
57.
Viruses are _______.
a)
producers
b)
consumers
c)
parasites
d)
decomposers
58.
poison produced by some bacteria
a)
toxin
b)
oxygen
c)
methane
d)
vitamin K
59.
Bacteria are used in
a)
farming
b)
the medical industry
c)
the food industry
d)
all of these
60.
decomposition is an important role of
a)
protozoans
b)
algae
c)
plants
d)
fungi
61.
If an organism reproduces asexually, its offspring will most likely be:
a)
produced as a result of fertilization
b)
Genetically identical to the parent
c)
Genetically different from each other
d)
Produced from specialized cells known as gametes
62.
How do unicellular (single celled) protists reproduce?
a)

internal fertilization

b)

External fertilization

c)

Binary fission

d)

conjugation

63.
Which statement below is correct about asexual reproduction and sexual reproduction?
a)
Asexual reproduction and sexual reproduction both involve one parent
b)
Sexual reproduction involves making clones and asexual reproduction creates unique offspring
c)
Asexual reproduction creates clones and sexual reproduction creates unique offspring
64.
Genetic Variation means
a)
genetic differences in a population or species
b)
genetic similarities between a population or species
65.
What are some of the facts about asexual reproduction?
a)
Takes only one mate to reproduce and takes a longer time to reproduce
b)
Takes a shorter amount of time to reproduce and it takes two mates to reproduce
c)
Reproduces diverse offspring and takes a longer time to reproduce
d)
Takes only one mate to reproduce and takes a shorter time to reproduce
66.
What are some of the facts about sexual reproduction?
a)
Takes two mates to reproduce and takes a longer time to reproduce
b)
Takes one mate to reproduce and takes a shorter amount of time to reproduce
c)
Takes two mates to reproduce and takes a shorter amount of time to reproduce
d)
Takes one mate to reproduce and takes a shorter amount of time to reproduce
67.
What is an advantage of sexual reproduction?
a)
Allows genetic variation
b)
Only needs one parent
c)
Offspring are exact copies of parent
68.
What is one disadvantage of sexual reproduction?
a)
Only one parent needed
b)
Off spring are exact copies of parents
c)
Happens very quickly
d)
Needs two parents
69.
When a starfish grows a new body off a broken arm, what kind of reproduction is this?
a)
Sexual
b)
Differentiation
c)
Asexual 
d)
Specialization
70.
If two organisms reproduce sexually, then their offspring will exhibit a genetic makeup that is -
a)
identical to only one parent
b)
identical to all of its siblings
c)
a unique combination of traits
71.

What kind of reproduction has a stem that grows along the ground and takes root to become a new organism?

a)

binary fission

b)

fragmentation

c)

mitosis

d)

budding

e)

runner

72.

What kind of reproduction is pictured?

a)

spore reproduction

b)

fragmentation

c)

parthenogenesis

d)

budding

e)

runner

73.

What kind of reproduction is pictured?

a)

spore reproduction

b)

fragmentation

c)

parthenogenesis

d)

budding

e)

runner

74.

A fertilized egg is called a ____.

a)

baby

b)

sperm

c)

egg

d)

zygote

75.

What is a gamete?

a)

sex cell

b)

human cells

c)

plant cells

d)

plant and animal cells

76.

The male gamete is a ______. The female gamete is a _____. When the two gametes come together, it's called _____.

a)

egg, sperm, offspring

b)

sperm, egg, offspring

c)

sperm, egg, gamete

d)

sperm, egg, asexual reproduction

e)

sperm, egg, fertilization

77.

Sexual reproduction provides more diversity/variation in a species.

a)

true

b)

false

78.

Asexual reproduction happens quicker than sexual reproduction.

a)

true

b)

false

79.

How many parents are required for asexual reproduction?

a)

none

b)

1

c)

2

d)

4

80.

Which organisms reproduce by budding? Click all that apply.

a)

hydra

b)

earthworm

c)

bacteria

d)

yeast cells

81.

How many parents are involved with sexual reproduction?

a)

none

b)

1

c)

2

d)

4

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