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Q:

In a bisexual flower if androcium and gynoecium mature at different time the phenomeon is known as _________

A) Dichogamy B) Herpogamy
C) Haterogamy monogamy D) None of these
 
Answer & Explanation Answer: A) Dichogamy

Explanation:
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Q:

Important objective of biotechnology in agriculture section is _________

A) % produce best resistant varieties of plant B) % increase the nitrogen content
C) % decrease the seed number D) % increase the plant weight
 
Answer & Explanation Answer: A) % produce best resistant varieties of plant

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Q:

Who discovered the monomers of nucleic acids?

A) James Watson, Francis Crick, and Rosalind Franklin B) Friedrich Miescher
C) Phoebus Levene D) Gerardus Johannes Mulder and Jöns Jacob Berxelius
 
Answer & Explanation Answer: C) Phoebus Levene

Explanation:

Deoxyribonucleic acid (DNA) is a nucleic acid polymer composed of monomers called nucleotides. Nucleotides are composed of three components: (1) a pentose sugar; (2) a nitrogenous base; and (3) one to three phosphate groups.

Phoebus Levene, a Russian biochemist was the first to discover the nucleotide and the first to correctly identify the way nucleic acid molecules, DNA.

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Q:

Both food and air travel through the

A) pharynx B) trachea
C) larynx D) alveolus
 
Answer & Explanation Answer: A) pharynx

Explanation:

The pharynx is a passageway shared by both food and air.

 

Both_food_and_air_travel_through_the1562568925.png image

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Q:

The arbor vitae refers to

A) the pleatlike convolutions of the cerebellum B) cerebellar gray matter
C) flocculonodular nodes D) cerebellar white matter
 
Answer & Explanation Answer: D) cerebellar white matter

Explanation:

In the brain cerebellum, the arbor vitae refers to the cerebellar white matter which resembles the structure of arborvitae plant leaves and branches structure.

arbor-vitae1540288058.png image

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Q:

Which letter indicates systolic pressure?

A) i B) b
C) c D) a
 
Answer & Explanation Answer: D) a

Explanation:

a -  at the peak of changes in blood pressure indicates the systiolic pressure.

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Q:

Who is known as father of medicine

A) Aristotle B) Theophrastus
C) Hippocrates D) Edward Jenner
 
Answer & Explanation Answer: C) Hippocrates

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Q:

Which helps prevent errors in DNA replication?

A) Complementary base pairing reduce errors B) DNA ligase checks the DNA for errors
C) DNA is located in the ribosomes D) Any base can pair with any other base
 
Answer & Explanation Answer: A) Complementary base pairing reduce errors

Explanation:

DNA replication is the biological process of producing two identical replicas of DNA from one original DNA molecule. DNA replication occurs in all living organisms acting as the basis for biological inheritance. Complementary base pairing helps prevent errors in DNA replication.

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