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Q:

Which three processes are methods of genetic recombination?

A) independent assortment B) Crossing over
C) fertilization D) All the above
 
Answer & Explanation Answer: D) All the above

Explanation:

Genetic recombination is a complex process that involves alignment of two homologous DNA strands, precise breakage of each strand, equal exchange of DNA segments between the two strands, and sealing of the resultant recombined DNA molecules through the action of enzymes called ligases.

Crossing over, independent assortment and fertilization are methods of genetic recombination.

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Q:

The formed elements in the blood are

A) Erythrocytes B) Leucocytes
C) Thrombocytes D) All the above
 
Answer & Explanation Answer: D) All the above

Explanation:

The formed elements are so named because they are enclosed in a plasma membrane and have a definite structure and shape.

 

The formed elements in the blood are Erythrocytes (RBC's), Leukocytes (WBC's) and Thrombocytes (Platelets).

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Q:

In which of the following tissues are the cells living, elongated and irregularly thickened at the corners?

A) Parenchyma B) Sclerenchyma
C) Aerenchyma D) Collenchyma
 
Answer & Explanation Answer: D) Collenchyma

Explanation:
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Q:

Prostate gland is present below

A) the urinary bladder B) the kidneys
C) the scrotum D) the penis
 
Answer & Explanation Answer: A) the urinary bladder

Explanation:
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Q:

RBCs are formed in the ____________ in the adults.

A) blue bone marrow B) red bone marrow
C) white bone marrow D) black bone marrow
 
Answer & Explanation Answer: B) red bone marrow

Explanation:
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Q:

The auxiliary buds _____.

A) grow endogenously from the pericycle B) arise endogenously from the main growing point
C) is an embryonic shoot located in the axil of a leaf D) arise exogenously from the epidermis
 
Answer & Explanation Answer: C) is an embryonic shoot located in the axil of a leaf

Explanation:
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Q:

Which factor affects the heart rate in mammals?

A) Need for oxygen B) RBC count in blood
C) Blood type D) All the above
 
Answer & Explanation Answer: A) Need for oxygen

Explanation:
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Q:

The ___ has abundant white fibres.

A) cartilage B) ligament
C) tendon D) bone
 
Answer & Explanation Answer: C) tendon

Explanation:
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