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Q:

ZIKA virus which causes neurological birth disorders is transmitted by

A) Rat bites B) Mosquito bites
C) Snake bites D) Monkey bites
 
Answer & Explanation Answer: B) Mosquito bites

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Q:

In a plant, which of the following is converted into seed?

A) ovule B) ovary
C) style D) stigma
 
Answer & Explanation Answer: A) ovule

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Q:

Which of the following is necessary to maintain the number of individuals of species and to prevent their extinction?

A) Digestion B) Circulation
C) Respiration D) Reproduction
 
Answer & Explanation Answer: D) Reproduction

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Q:

Which of the following statements is true?

A) In grasshoppers and some insects, the male has only four sex chromosomes B) A male individual contains one X and two Y chromosomes
C) In human beings, there are 46 chromosomes, of which 42 (21 pairs) are autosomes D) In diploid organisms having separate sexes, a specific pair of chromosomes in each diploid cell determines the sex of the individual, they are called sex chromosomes.  
 
Answer & Explanation Answer: D) In diploid organisms having separate sexes, a specific pair of chromosomes in each diploid cell determines the sex of the individual, they are called sex chromosomes.  

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Q:

Amphibian plants are placed in which of the following groups?

A) Bryophyta B) Gymnosperms
C) Pteridophyta D) Thallophyta
 
Answer & Explanation Answer: A) Bryophyta

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Q:

What is a tissue?

A) Cells which are similar in origin, but dissimilar in form and function B) Cells which are dissimilar in origin, but are similar in form and function
C) Cells which are dissimilar in origin, form and function D) Cells which are similar in origin, form and function
 
Answer & Explanation Answer: D) Cells which are similar in origin, form and function

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Q:

When a person can see only nearby objects, the condition is called

A) Hypermetropia B) Astigmatism
C) Myopia D) Retinopathy
 
Answer & Explanation Answer: C) Myopia

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Q:

Growth hormones function

A) sometimes as growth promotors and sometimes as growth inhibitors B) always as growth inhibitors
C) rarely as growth promotors D) always as growth promotors
 
Answer & Explanation Answer: A) sometimes as growth promotors and sometimes as growth inhibitors

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