Biology Test

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Biology Test - 18

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Weekly Quiz Competition

Question 1
1 / -0

The first heart sound is produced when

A

semilunar valve closes quickly

B

interventricular pressure decreases

C

bicuspid and tricuspid valves close quickly

D

diastole begins
Question 2
1 / -0

Which of the following is/are made up of a single bone in mammals?

A

Dentary

B

Hyoid

C

Upper jaw

D

All of these
Question 3
1 / -0

Total number of bones in the hind limb of a man is

A

27

B

30

C

21

D

3
Question 4
1 / -0

Primary source of allelic variation is

A

recombination

B

independent assortment

C

mutation

D

polyploidy
Question 5
1 / -0

Pappus helps in dispersal of pollen in

A

Solanaceae

B

Brassicaceae

C

Malvaceae

D

Asteraceae
Question 6
1 / -0

Pick out the incorrect statement with respect to the process of photosynthesis in plants.

A

Photosynthesis is an anabolic process in which organic compounds are synthesised.

B

In the process of photosynthesis, oxidative phosphorylation takes place.

C

It is an endergonic process.

D

In photosynthesis, light energy is changed into chemical energy.
Question 7
1 / -0

Which of the following properties is attributed to the respones to changes in external and internal environment by protoplasm

A

Mutability

B

Reproducibility

C

Irritability

D

Adaptability
Question 8
1 / -0

The process of growth is determined by

A

Increase in size

B

Increase in size and dry weight

C

Increase weight only

D

Increase in dry weight
Question 9
1 / -0

In a given plant, red colour (R) of fruits is dominant over white fruit (r); and tallness (T) is dominant over dwarfness (t). If a plant with genotype RRTt is crossed with a plant of genotype rrtt, what will be the percentage of tall plants with red fruits in the next generation?

A

75%

B

25%

C

100%

D

50%
Question 10
1 / -0

Keystone species deserve protection because these

A

play an important role in supporting other species

B

have become rare due to over exploitation

C

indicate presence of certain minerals in the soil

D

are capable of surviving in harsh environmental conditions

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Re-Attempt Weekly Quiz Competition

Biology Test - 18

Result

Biology Test - 18

Score

-

Rank

-

SHARING IS CARING

Question 1

semilunar valve closes quickly

interventricular pressure decreases

bicuspid and tricuspid valves close quickly

diastole begins

Question 2

Dentary

Hyoid

Upper jaw

All of these

Question 3

27

30

21

3

Question 4

recombination

independent assortment

mutation

polyploidy

Question 5

Solanaceae

Brassicaceae

Malvaceae

Asteraceae

Question 6

Photosynthesis is an anabolic process in which organic compounds are synthesised.

In the process of photosynthesis, oxidative phosphorylation takes place.

It is an endergonic process.

In photosynthesis, light energy is changed into chemical energy.

Question 7

Mutability

Reproducibility

Irritability

Adaptability

Question 8

Increase in size

Increase in size and dry weight

Increase weight only

Increase in dry weight

Question 9

75%

25%

100%

50%

Question 10

play an important role in supporting other species

have become rare due to over exploitation

indicate presence of certain minerals in the soil

are capable of surviving in harsh environmental conditions

User

Question Analysis

My Perfomance

Score

-

Rank

-

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