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class 6 quiz HST

Total questions: 100

Worksheet time: 3615secs

Name
Class
Date
1.

Which of the following is an advantage of asexual reproduction?

a)

Cuttings taken from an adult plant show increased resistance to diseases.

b)

Grafted plants can more successfully endure drought.

c)

When cuttings are taken from an adult plant or plant parts, the resulting plant will grow into an adult faster than a seedling.

d)

Asexual reproduction takes advantage of a more diverse gene pool.

2.

Star fish’s most remarkable characteristics are its ability to ____________.

a)

hibernate

b)

survive without air

c)

make its own food

d)

regenerate

3.

Bryophyllum reproduces by ___________.

a)

vegetative propagation

b)

budding

c)

fission

d)

fragmentation

4.

When living tissue from a plant is extracted and placed in a medium, it is called ______.

a)

horticulture

b)

transplantation

c)

explant

d)

callus

5.

Budding, in yeast, is a form of ________.

a)

tissue culture

b)

sexual reproduction

c)

asexual reproduction

d)

vegetative propagation

6.

____________is not a method of artificial vegetative propagation.

a)

Grafting

b)

Cutting

c)

Layering

d)

Runner

7.

The vegetative parts of the plants are the ___________.

a)

leaves

b)

roots

c)

roots

d)

three choices given above

8.

The spores produced in non-flowering plants help in ____________.

a)

reproduction

b)

survive adverse conditions

c)

both (a) and (b)

d)

none of the above

9.

Potatoes reproduced by ____________.

a)

stem tubers

b)

corms

c)

rhizomes

d)

bulbs

10.

Lila observed that a pond with clear water was covered with green algae within a week. By which method of reproduction did the algae spread so rapidly?

a)

Budding

b)

Sexual reproduction

c)

Fragmentation

d)

Pollination

11.

A farmer intended to have plants with the redness of one variety of tomato and the tanginess of another variety. Which method of vegetative propagation would he use?

a)

Cutting

b)

Grafting

c)

Layering

d)

Tissue culture

12.

Jacob was able to grow a large number of disease-free orchids within a short time. Which method of propagation did he use?

a)

Cutting

b)

Grafting

c)

Layering

d)

Micro-propagation

13.

Which of the following plants is not propagated using underground stem?

a)

Potato

b)

Ginger

c)

Dahlia

d)

Gladiolus

14.

Which of the following is not true for vegetative propagation?

a)

Seedless plants can be raised

b)

Overcrowding near parent plant can be avoided

c)

Rapid and easier method

d)

Plants identical to the parent can be produced

15.

Which of the following shows the correct sequence of binary fission?

a)

Cell elongation, splitting of cells, division of nucleus

b)

Division of nucleus, cell elongation, splitting of cells

c)

Cell elongation, division of nucleus, splitting of cells

d)

Division of nucleus, splitting of cells, cell elongation

16.

Reproduction is an essential life process because ____________.

a)

all organisms have a definite life span

b)

without reproduction, the species would perish

c)

both a) and b)

d)

none of the above

17.

Which of the following is/are not characteristics of asexual reproduction?

a)

Offspring of their own kind are produced

b)

Gametes are produced

c)

One individual is required

d)

Both a) and b)

18.

Which of the following is not a true method of reproduction?

a)

Binary fission

b)

Budding

c)

Fragmentation

d)

Regeneration

19.

__________________ present in stem help in growth of new plants.

a)

Leaves

b)

Axillary buds

c)

Roots

d)

Terminal buds

20.

Find the mismatched pair.

a)

Strawberry : Stolon

b)

Jasmine : Layering

c)

Lemon : Root cutting

d)

Sweet potato : Stem tuber

21.

True or false. The pollen is a male gamete.

a)

False

b)

True

22.

The male flower part called as...

a)

Carpel

b)

Stamen

c)

Pistil

d)

Anther

23.

The part of a flower as the place for fertilization

a)

Stigma

b)

Ovary

c)

Carpel

d)

Ovule

24.

Take a look at the image! Which numbers that assign for anther, stigma, and ovule

a)

3, 11, 6

b)

1,3,4

c)

10, 4, 7

d)

3, 4, 6

25.

Which of the following options are below. Choose the correct pairs in the flower part! (The answer more than 1)

a)

Stigma and style

b)

Anther and style

c)

Stigma and filament

d)

Anther and filament

26.

The flower has one structure called a flower stalk or receptacle, why a flower needs this structure?

(a)  

27.

Before fertilization takes place, there is a process that is needed for flowers to reproduce called pollination. How can you define pollination?

(a)  

28.

Look at the image in A and B! What's kind of pollination that shown in the image?

(a)  

29.

Is the self-pollination less of variation at the result? Why?

a)

No, it is not. Pollination always raises any variation

b)

Yes it is because in the same characteristics

c)

No, it is not. Still create a variation, becasue every species has their own characteristics

d)

Yes it is because there is no generic material exchange

30.

Which of the following answer, choose the correct one about what is cross-pollination.

a)

Pollen is transferred to an ovary on a different plant of the same species.

b)

Pollen is transferred to a stigma on a different plant of the same species.

c)

Pollen is produced to a stigma on a different plant of the same species.

d)

Pollen is transferred to an ovule on a different plant of the same species.

31.

Cross-pollination can occur in a variety of plants in the same species, not in different species. True or false?

a)

True

b)

False

32.

“The male gamete is inside the pollen grain. The pollen grains are not the male gamete”.

a)

False

b)

True

33.

Take a look at the image. The type of those plants, what is pollinated that they have?

a)

Self-pollination

b)

Wind pollination

c)

all type of pollination

d)

Cross-pollination

34.

The characteristic of the wind-pollinated flower is the anther hang inside and the stigma is not feathery

a)

True

b)

False

35.

Describe based on your understanding, what is fertilisation in the flowers!

(a)  

36.

The pollen grain does not enter the ovary and meet with an ovule, only landed on the stigma

a)

True

b)

False

37.

What is the structure that helps pollen distribute the male gamete to the ovule?

a)

Style

b)

Micropyle

c)

Pollen tube

d)

Ovary

38.

Look at the image. Fruit or vegetable?

a)

Fruit

b)

vegetable

c)

Both

39.

Take a look at the image! what is the name for the structure in A, B, and C

a)

The seed coat, embryo, food store

b)

Food store, embryo, seed coat

c)

food store, seed coat, embryo

d)

Embryo, food store, seed coat

40.

Describe your feeling about this quiz 2

a)
b)
c)
d)
41.

The term that is used for the mode of nutrition in yeast, mushroom and bread-mould is

a)

autotrophic

b)

parasitic

c)

saprophytic

d)

symbiotic

42.

Which of the following statements is/are correct?

(i) All green plants can prepare their own food.

(ii) Most animals are autotrophs.

(iii) Carbon dioxide is not required for photosynthesis.

(iv) Oxygen is liberated during photosynthesis.

Choose the correct answer from the options below:

a)

( i) and (iv)

b)

(ii) only

c)

(ii) and (iii)

d)

(i) and (ii)

43.

Pitcher plant traps insects because it grows in soils which lack in ---------

(a)  

44.

Organisms other than plants which contain Chlorophyll are

a)

Algae

b)

Protozoa

c)

Virus

d)

Fungi

45.

Foods synthesized in the process of Photosynthesis by plants is stored as

a)

Starch

b)

Protein

c)

Vitamins

d)

Fats

46.

Which of the following is not necessary for photosynthesis

a)

Chlorophyll

b)

Carbon dioxide gas

c)

Oxygen

d)

Water

47.

Which of the following component of food contains Nitrogen

a)

Carbohydrate

b)

Protein

c)

Fat

d)

Minerals

48.

Which part of the plant takes carbon dioxide from air for Photosynthesis

a)

Root Hair

b)

Stomata

c)

Leaf Veins

d)

Petals

49.

What protects Stomata and helps it in opening and closing?

a)

Guard Cells

b)

Leaf

c)

Stem

d)

Carbon Dioxide

50.

Fungi like Mushrooms are heterotrophs but what is the scientific term for it in Science?

a)

Decomposers

b)

Autotrophs

c)

Saprotrophs

d)

Carnivores

51.

Rhizobium is

a)

A parasite and nitrogen-fixing bacterium

b)

A non- symbiotic bacterium

c)

A symbiotic and nitrogen-fixing bacterium

d)

None of the above

52.

A plant was kept in a dark room for a week. When its leaves were tested with iodine solution, it did not show the presence of starch. From this experiment we can conclude that ____ is essential for photosynthesis.

a)

sunlight

b)

water

c)

carbon Dioxide

d)

oxygen

53.
Stomata open to allow gas exchange to take place during photosynthesis. 
a)
True
b)
False
54.
The equation for photosynthesis is
a)
oxygen + water --> glucose + carbon dioxide
b)
oxygen + glucose --> carbon dioxide + water
c)
carbon dioxide + water --> glucose + oxygen
d)
carbon dioxide + glucose --> oxygen + water
55.

Transpiration is the loss of water through the stomata of the leaves.

a)

True

b)

False

56.

Two organisms are good friends and live together. One provides shelter, water, and nutrients while the other prepares and provides food. Such an association of organisms is termed as

a)

(a) saprophyte

b)

(b) parasite

c)

(c) autotroph

d)

(d) symbiosis

57.

Pitcher plant traps insects because it

a)

(a) is a heterotroph.

b)

(b) grows in soils which lack in nitrogen.

c)

(c) does not have chlorophyll.

d)

(d) has a digestive system like human beings.

58.

Iodine used to detect presence of starch. It gives starch

a)

(a) red colour

b)

(b) green colour

c)

(c) blue-black colour

d)

(d) colourless appearance

59.

Organisms which prepare food for themselves using simple naturally available raw materials are referred to as

a)

heterotrophs

b)

autotrophs

c)

parasites

d)

saprophytes

60.

In plants, the food is distributed to all parts by phloem.

a)

True

b)

False

61.

The largest gland in the human body is ____________.

a)

liver

b)

kidney

c)

oesophagus

d)

salivary glands

62.

The pointed teeth in your mouth are

a)

premolars

b)

incisors

c)

molars

d)

canines

63.

4.Bile is produced in the

a)

stomach

b)

small intestine

c)

pancreas

d)

liver

64.

During digestion,fats are changed into

a)

amino acids

b)

fatty acids and glycerol

c)

glucose

d)

sugar

65.

The inner walls of the stomach secrete _________.

a)

Mucus & hydrochloric acid

b)

Bile

c)

Lime

d)

Salt

66.

Water from the undigested food is absorbed mainly in the

a)

stomach

b)

foodpipe

c)

small intestine

d)

large intestine

67.
What is the finger-like projections found in the digestive system called?
a)
Protozoa
b)
Villi
68.
How many stomachs does a ruminant have?
a)
1
b)
3
c)
4
d)
2
69.

The process of intake of food is called...........

a)

Ingestion

b)

Digestion

c)

Absorption

d)

Assimilation

70.

In amoeba,ingestion of food takes place with the help of false feet called................

a)

Vacuole

b)

Lysosome

c)

Arms

d)

Pseudopodia

71.

The ___ helps in mixing saliva with food.

a)

Heart

b)

Stomach

c)

Nose

d)

Tongue

72.

Amoeba digests its food in the ____.

a)

Food vacuole

b)

Stomach

c)

Liver

d)

Intestine

73.

Mostly grass eating animals are called____.

a)

Carnivore

b)

Omnivore

c)

Ruminants

d)

Scavenger

74.

Digestion starts from _____.

a)

Mouth

b)

Stomach

c)

Liver

d)

Ribs

75.

The mode of feeding of the mosquito_____.

a)

Chewing

b)

Cuddling

c)

Scraping

d)

Sucking

76.

THE PARTIALLY DIGESTED FOOD IN RUMINANTS IS CALLED

a)

CELLULOSE

b)

CUD

c)

PSEUDOPODIA

d)

VILLI

77.

Name the process by which the digested food molecules are taken up by the intestine wall and sent to circulatory system.

a)

Assimilation

b)

Digestion

c)

Absorption

d)

Egestion

78.

Identify the type of teeth________________

a)

Molar

b)

Canine

c)

Milk teeth

79.

The part of the digestive system where no digestion takes place is

a)

mouth

b)

stomach

c)

oesophagus

d)

small intestine

80.

The enzymes present in the saliva convert

a)

fats into fatty acids and glycerol.

b)

starch into simple sugars.

c)

proteins into amino acids.

d)

complex sugars into simple sugars.

81.

The study of microbes are called

a)

Botany

b)

Microbiology

c)

Zoology

82.

Diseases like dysentery and malaria are caused by

a)

protozoa

b)

algae

c)

bacteria

83.

Cold, flu and polio are caused by

a)

Bacteria

b)

Viruses

c)

Protozoa

84.

An example of fungus

a)

Amoeba

b)

Paramecium

c)

Penicillium

d)

Spirogyra

85.

Fungi and bacteria live in

a)

alone

b)

colonies

c)

may be a or b

86.

Name the bacteria present in curd

a)

Lactobacillus

b)

Penicillium

c)

Aspergillus

87.

Yeast reproduces rapidly and produces

a)

oxygen

b)

carbon dioxide

c)

both a and b

88.

Bubbles of the gas fill the dough and decrease its volume. This is the basis of the use of yeast in the baking industry for making bread.

a)

True

b)

False

89.

___________ is used for the large scale production of alcohol, wine, and acetic acid.

a)

Yeast

b)

Penicillium

c)

Aspergillus

90.

Identify the correct definition of fermentation.

a)

The process of conversion of alcohol into sugar is known as fermentation.

b)

The process of conversion of sugar into acid is known as fermentation.

c)

The process of conversion of sugar into alcohol is known as fermentation.

91.

A spoon of yeast powder was added to the sugar solution. What change was observed in the solution after 4 - 5 hours?

a)

The Colour of the solution changed

b)

The smell of the solution changed indicating the formation of alcohol.

c)

No change was observed

92.

Example of antibiotic

a)

Streptomycin

b)

Tetracyclin

c)

Erythromycin

d)

All of the above

93.

The source of antibiotics is

(a)  

94.

Name the sugar present in milk

(a)  

95.

Who discovered antibiotics?

(a)  

96.

Who discovered vaccine for small pox?

(a)  

97.

The bacteria that can fix nitrogen from the atmosphere to enrich the soil with nitrogen and increase its fertility are called (a)  

98.

(a)   decompose dead organic wastes into simple substances

99.

Vaccines contain

a)

dead or weakened pathogens

b)

live organism

c)

antibodies

100.

When a vaccine is introduced into the body, _________ are produced by the immune system.

a)

antigens

b)

antibodies

c)

both a and b

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