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Q:

___, present in the centre of a flower, forms the female reproductive part.

A) Sepals B) Petals
C) Carpels D) Stamens
 
Answer & Explanation Answer: C) Carpels

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Q:

Dwarfness can be controlled by treating plants with

A) Gibberellic acid B) Cytokinin
C) Ethylene D) Auxin
 
Answer & Explanation Answer: A) Gibberellic acid

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Q:

___ is the liquid part of the blood of which 92% is water and the remaining 8% is proteins, minerals, hormones, enzymes and so on.

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

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Q:

Retinol is mainly related to ___.

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

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Q:

Which one is not the cause of kidney stone formation?

A) Drinking more water B) Diabetic mellitus
C) Taking nuts rich in oxalate D) Eating lot of stone forming foods
 
Answer & Explanation Answer: A) Drinking more water

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Q:

Kind of cell that does not have a nucleus

A) Eukaryotes B) Prokaryotes
C) Erthrocytes D) Platelets
 
Answer & Explanation Answer: B) Prokaryotes

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Q:

Phytohormones are

A) substances controlling diseases B) regulators synthesized by plants influencing physiological processes
C) substances used for photosynthesis D) chemicals used for peeling
 
Answer & Explanation Answer: C) substances used for photosynthesis

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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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