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 Biology Questions

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Q:

Which is the longest part of alimentary canal?

 

A) Oesophagus B) Small intestine
C) Large intestine D) Buccul cavity
 
Answer & Explanation Answer: B) Small intestine

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Q:

A sarcomere is best described as a

 

A) fixed structural unit within a myofibril bounded by Z lines. B) moveable structural unit within a myofibril bounded by H zones.
C) moveable structural unit within a myofibril bounded by Z lines. D) fixed structural unit within a myofibril bounded by A bands.
 
Answer & Explanation Answer: C) moveable structural unit within a myofibril bounded by Z lines.

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Q:

Number of eyes found in Earthworm..........

A) One B) Many
C) No eye D) Two
 
Answer & Explanation Answer: C) No eye

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Q:

Ovules are found within structure

 

A) E B) D
C) B D) A
 
Answer & Explanation Answer: C) B

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Q:

Vaccination against which disease was conducted recently as a National Vaccination Day?

 

 

A) Polio B) Cholera
C) Malaria D) Tuberculosis
 
Answer & Explanation Answer: A) Polio

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Q:

Nuclear membrane is absent in

A) Volvox B) Penicillium
C) Agaricus D) Nostoc
 
Answer & Explanation Answer: D) Nostoc

Explanation:

Nostoc is a prokaryote. Prokaryotic cells lack membrane bound organelles and well organized nucleus, that is nuclear envelope is absent in these cells.

nuclear_membrane1533030195.jpg image

The nuclear envelope, also known as the nuclear membrane, a bilayer membranes which surrounds the nucleus, and in eukaryotic cells it encases the genetic material.

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Q:

Who expanded the cell theory and suggested that all the cells arise from pre-existing cells?

 

A) T. Schwann B) M. Schleiden
C) J. E. Purkinje D) Rudolf Virchow
 
Answer & Explanation Answer: D) Rudolf Virchow

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Q:

Fill in the blank with the most appropriate option.

 

If the genotype of a plant is ttRr, the phenotype would be ___.

 

A) Dwarf and Wrinkled B) Tall and Wrinkled
C) Dwarf and Round D) Tall and Round
 
Answer & Explanation Answer: C) Dwarf and Round

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