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 Biology Questions

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Q:

Most viruses that infect plants possess

A) single-stranded DNA B) single-stranded RNA
C) double-stranded DNA and RNA D) double-stranded RNA only
 
Answer & Explanation Answer: B) single-stranded RNA

Explanation:

Generally viruses that infect plants have single stranded RNA. Viruses infecting animals have double stranded RNA or DNA. Viruses which infect bacteria have double stranded DNA.

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Q:

Sponges belongs to the phylum

A) Protozoa B) Annelida
C) Porifera D) Cnidaria
 
Answer & Explanation Answer: C) Porifera

Explanation:
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Q:

Which of the following micro-organism causes diseases like polio and chicken pox?

A) Bacteria B) Protozoa
C) Algae D) Virus
 
Answer & Explanation Answer: D) Virus

Explanation:
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Q:

Haematopoiesis take place in _____.

A) Lungs B) Pancreas
C) Liver D) Bone marrow
 
Answer & Explanation Answer: D) Bone marrow

Explanation:
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Q:

___, found in blood, is responsible for oxygen transportation.

A) WBC B) Plasma
C) Platelets D) RBC
 
Answer & Explanation Answer: D) RBC

Explanation:
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Q:

Which of the following is induced by Oncogene?

A) Polio B) Cancer
C) Diarrhoea D) Dengue
 
Answer & Explanation Answer: B) Cancer

Explanation:
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Q:

Which of the following is responsible for transport of food and other substances in plants?

A) Xylem B) Phloem
C) Chloroplast D) None of these
 
Answer & Explanation Answer: B) Phloem

Explanation:
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Q:

Which of the following organs do not have blood vessels?

A) Spleen B) Cornea
C) Liver D) None of the above
 
Answer & Explanation Answer: B) Cornea

Explanation:

Corneas are only tissues that don’t have blood vessels. Tissues are the level cellular organization in the human body which lies between cells and a complete organ. Tissues of similar cells group together to form an organ.

 

There are four types of tissues. They are :

Epithelial,

Connective,

Muscular, and

Nervous tissue.

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