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Reproductive System


1. 

Spermatids derive the nourishment from

Answer : D. Sertoli cell

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2. 

Which one of the following types of sex chromosomes represents a male human being?

Answer : C. XY

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3. 

Sexually reproducing organisms contribute to their off spring

Answer : A. half of their genes

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4. 

Collateral glands are found in

Answer : B. Female reproductive system of cockroach

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5. 

Mark the correct statement:

Answer : C. Each egg is usually fertilized by one sperm

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6. 

Identical twins are born when

Answer : D. One sperm fertilizes one ovum zygote cleaves into twoc cells that develop independently

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