Biology - Online Test

Q1. Who invented electron microscope?
Answer : Option C
Explaination / Solution:
No Explaination.


Q2. All populations in a given physical area are defined as
Answer : Option A
Explaination / Solution:
No Explaination.


Q3. In Phaeophyceae, the food stored in the form of
Answer : Option D
Explaination / Solution:

In Phaeophyceae, food is stored as complex carbohydrates which may be in the form of laminarin or mannitol.

Q4. New cells generate from
Answer : Option C
Explaination / Solution:

All living organisms are composed of cells and products of cells.all cells arise from pre-existing cells.

Q5. Genetic information is carried out by long chain molecule made up of
Answer : Option C
Explaination / Solution:

Genetic information is carried out by DNA and RNA. Both DNA and RNA are called genetic material, made up of long chain of nucleotide having- nitrogenous base, sugar and phosphate ions.

Q6. During which phase(s) of cell cycle amount of DNA in a cell remains at 4C level if the initial amount is denoted as 2C?
Answer : Option B
Explaination / Solution:
No Explaination.


Q7. The length of human trachea is about
Answer : Option B
Explaination / Solution:
No Explaination.


Q8. Doctors use stethoscope to hear the sound; produced during each cardiac cycle. The second sound is heard when:
Answer : Option D
Explaination / Solution:
No Explaination.


Q9. Flow of energy in our ecosystem takes place
Answer : Option A
Explaination / Solution:

In ecosystem, flow of energy takes place in only one direction. The flow of energy takes place from producers to final consumers. Energy present in one trophic levels nevers return back to producer.

Q10. The chief pigment associated in process of photosynthesis is
Answer : Option C
Explaination / Solution:

Chlorophyll a, shows higher rate of photosynthesis.so, chlorophyll a is the chief pigment associated with photosynthesis.