HARD

10th Foundation

IMPORTANT

Earn 100

Which of the following is correct regarding the effects of sympathetic and parasympathetic nervous system as shown in the given table?

Organ Sympathetic nervous system Parasympathetic nervous system

$I .$ Heart Increases the rate of heartbeat Decreases the rate of heartbeat

$I I .$ Arteries Constriction of arteries Dilation of arteries

$I I I .$ Lungs Constricts bronchi and bronchioles Dilates bronchi and bronchioles

$I V .$ Eyes Constricts pupil Dilates pupil

$V .$ Urinary bladder Relaxation Contraction

25% studentsanswered this correctly

Important Questions on SOF National Science Olympiad

HARD

10th Foundation

IMPORTANT

NSO Science Olympiad Workbook Grade 10>Chapter 16 - SOF National Science Olympiad>SCIENCE>Q 27

Identify the plant hormone ' $X$ ' from the given statements and select the correct option regarding it:
$I .$ It promotes cell division in plants.
$I I .$ It helps in breaking dormancy of seeds.
$I I I .$ It delays the ageing in leaves.
$I V .$ It brings about morphogenesis along with auxin during tissue culture.

EASY

10th Foundation

IMPORTANT

NSO Science Olympiad Workbook Grade 10>Chapter 16 - SOF National Science Olympiad>SCIENCE>Q 28

The genotype for the height of an organism is

T t

. What conclusion can be drawn from this?

HARD

10th Foundation

IMPORTANT

NSO Science Olympiad Workbook Grade 10>Chapter 16 - SOF National Science Olympiad>SCIENCE>Q 29

Which of the following options shows a likely food chain represented by the given pyramid of number?

Question Image

HARD

10th Foundation

IMPORTANT

NSO Science Olympiad Workbook Grade 10>Chapter 16 - SOF National Science Olympiad>SCIENCE>Q 30

Which of the following activities will help to sustain environmental balance?
(

i

) Usage of platinum jewellery as it will reduce the load on gold mines.
(

i i

) Farming as it helps to ensure that man does not eat up all the food producers.
(

i i i

) Use of jute bags instead of poly bags.
(

i v

) Using solar energy as it provides an alternative to fossil fuels.

HARD

10th Foundation

IMPORTANT

NSO Science Olympiad Workbook Grade 10>Chapter 16 - SOF National Science Olympiad>SCIENCE>Q 31

Which among the following are artificial ecosystem?
(

i

)Estuaries

(i i)

Mountains

(i i i)

Crop fields

(i v)

Grasslands

(v)

Coral reefs

(v i)

Parks

(v i i)

Mangroves

(v i i i)

Aquariums

HARD

10th Foundation

IMPORTANT

NSO Science Olympiad Workbook Grade 10>Chapter 16 - SOF National Science Olympiad>SCIENCE>Q 32

Refer to the given figure and select the correct option regarding functions of

X

and

Y .

HARD

10th Foundation

IMPORTANT

NSO Science Olympiad Workbook Grade 10>Chapter 16 - SOF National Science Olympiad>SCIENCE>Q 33

Which statement is incorrect for the tissue shown in the given figure?
Question Image

HARD

10th Foundation

IMPORTANT

NSO Science Olympiad Workbook Grade 10>Chapter 16 - SOF National Science Olympiad>SCIENCE>Q 34

Identify incorrect differences between dicots and monocots from the given table:

Sl.No	Dicots	Monocots
$I .$	Tap root system	Fibrous root system
$I I .$	In stem, vascular bundles are arranged in ring	In stem, vascular bundles are scattered throughout ground tissue
$I I I .$	Mostly parallel venation in leaf	Mostly reticulate venation in leaf
$I V .$	Flowers are mostly trimerous	Flowers are mostly pentamerous
$V .$	In root, pith is greatly reduced or absent	In root, pith is present

	Organ	Sympathetic nervous system	Parasympathetic nervous system
$I .$	Heart	Increases the rate of heartbeat	Decreases the rate of heartbeat
$I I .$	Arteries	Constriction of arteries	Dilation of arteries
$I I I .$	Lungs	Constricts bronchi and bronchioles	Dilates bronchi and bronchioles
$I V .$	Eyes	Constricts pupil	Dilates pupil
$V .$	Urinary bladder	Relaxation	Contraction

Important Questions on SOF National Science Olympiad

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