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Q:

Which leukocyte is responsible for antibody production?

A) Monocyte B) T-Cells
C) B Lymphocyte D) Basophil
 
Answer & Explanation Answer: C) B Lymphocyte

Explanation:

Leukocyte, commonly known as a white blood cell (WBC), is a major component in protecting the body against invading microorganisms and body cells with mutated DNA, and they clean up debris. 

B Lymphocyte also called as B-Cells or plasma cells produces the antibodies or immunoglobulins that bind to specific foreign or abnormal components of plasma membranes. This is also referred to as humoral (body fluid) immunity.

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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:

What is the name of the point at which the chromatids are attached in a chromosome?

A) Centrosome B) Centromere
C) Nucleosome D) Gene
 
Answer & Explanation Answer: B) Centromere

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Q:

Which part of the human reproductive system helps the embryo get its nutrition from the mother's blood?

A) Placenta B) Fallopian tube
C) Uterus D) Cervix
 
Answer & Explanation Answer: A) Placenta

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Q:

_____ reproduces by multiple fission.

A) Plasmodium B) Rhizopus
C) Yeast D) Planaria
 
Answer & Explanation Answer: A) Plasmodium

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Q:

Which of the following represents the CORRECT scheme of sub-groups at various levels in classification?

A) Kingdom → Phylum → Class → order → Family → Genus → Species B) Kingdom → Order → Class → Family → Genus → Species → Phylum
C) Kingdom → Phylum → Order → Genus → Species → Class → Family D) Phylum → Kingdom → Class → Order → Genus → Family → Species
 
Answer & Explanation Answer: A) Kingdom → Phylum → Class → order → Family → Genus → Species

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Q:

The skin, the lining of the mouth, the lining of the blood vessels, lung alveoli and kidney tubules are all made of which type of tissue?

A) Epithelial tissue B) Connective tissue
C) Muscular tissue D) Nervous tissue
 
Answer & Explanation Answer: A) Epithelial tissue

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Q:

In sexual reproduction a parent contributes

A) Half of their genes B) Three-fourth of their genes
C) All the genes D) One-fourth of their genes
 
Answer & Explanation Answer: A) Half of their genes

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