12th Class Bihar Board Exam: Previous Years' Questions
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Questions and Answers

Which of the following is a characteristic of the 12th class Bihar board exam?

  • It is conducted quarterly
  • It is conducted annually (correct)
  • It is conducted every 3 years
  • It is conducted once in a decade

When are the previous exam questions for the 12th class Bihar board typically accessible?

  • Never accessible
  • During the exam
  • After the exam
  • Before the exam (correct)

What is the frequency of the previous exam questions for the 12th class Bihar board?

  • Every 3 years
  • Every semester
  • Every year (correct)
  • Every 5 years

What unifying theme in biology explains the unity and diversity of life?

<p>Evolution (A)</p> Signup and view all the answers

What is the primary unit of structure and function in all organisms?

<p>Cells (D)</p> Signup and view all the answers

Which major class of organisms includes protists, fungi, plants, and animals?

<p>Eukaryotes (B)</p> Signup and view all the answers

At what level of organization do biologists study molecular biology and genetics?

<p>Cellular level (C)</p> Signup and view all the answers

What is the fundamental process that allows organisms to move, grow, and reproduce?

<p>Energy processing (A)</p> Signup and view all the answers

What is the result of the interaction between the male and female reproductive systems during sexual intercourse?

<p>Fertilization of the ovum by the sperm to form a zygote (D)</p> Signup and view all the answers

What is the typical chromosome composition of a zygote?

<p>23 pairs of chromosomes (A)</p> Signup and view all the answers

What process initiates the 9-month gestation period in human reproduction?

<p>Fertilization of the ovum (C)</p> Signup and view all the answers

What must occur in individuals before engaging in sexual intercourse or achieving pregnancy through non-penetrative means?

<p>Ovulation in females and the spermarche in males (B)</p> Signup and view all the answers

What renders humans infertile before puberty?

<p>Lack of reproductive function in their genitals (C)</p> Signup and view all the answers

Flashcards

Bihar board exam frequency

The Bihar board exam for class 12th takes place every year.

Availability of previous exam questions

Past exam questions for the 12th class Bihar board are usually available before the actual exam.

Unifying theme in biology

Evolution is the unifying principle in biology, explaining the common ancestry and diversity of life.

Basic unit of life

The fundamental unit in all organisms, responsible for their structure and function.

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Major class of organisms

Eukaryotes are a major classification of organisms that include protists, fungi, plants, and animals.

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Level of biological study for molecular biology and genetics

Molecular biology and genetics study the processes that occur within the cell.

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Essential life process for movement, growth, and reproduction

The fundamental process allowing organisms to move, grow, and reproduce.

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Result of sexual intercourse

The union of a sperm and an ovum, forming a zygote, happens during sexual intercourse.

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Chromosome composition of a zygote

A zygote, formed by fertilization, typically has 23 pairs of chromosomes.

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Initiating factor of gestation period

Fertilization of the ovum initiates the 9-month gestation period in humans.

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Requirement before sexual intercourse or non-penetrative pregnancy

Individuals need to reach puberty before engaging in sexual intercourse or achieving pregnancy through non-penetrative means.

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Cause of infertility before puberty

Lack of reproductive function in the genitals renders humans infertile before puberty.

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Zygote

A zygote is a single cell formed by the fusion of a sperm and an egg.

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Study Notes

12th Class Bihar Board Exam

  • Characteristic of the 12th class Bihar board exam: Not specified
  • Previous exam questions for the 12th class Bihar board are typically accessible: Before the exam
  • Frequency of the previous exam questions for the 12th class Bihar board: Not specified

Biology Fundamentals

  • Unifying theme in biology that explains the unity and diversity of life: Not specified
  • Primary unit of structure and function in all organisms: Cell
  • Major class of organisms that includes protists, fungi, plants, and animals: Eukarya
  • Level of organization where biologists study molecular biology and genetics: Molecular level

Life Processes

  • Fundamental process that allows organisms to move, grow, and reproduce: Metabolism
  • Result of the interaction between the male and female reproductive systems during sexual intercourse: Fertilization
  • Typical chromosome composition of a zygote: Diploid (2n)
  • Process that initiates the 9-month gestation period in human reproduction: Implantation

Human Reproduction

  • What must occur in individuals before engaging in sexual intercourse or achieving pregnancy through non-penetrative means: Sexual maturity
  • What renders humans infertile before puberty: Immaturity of reproductive system

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Test your knowledge of the characteristics, frequency, and accessibility of previous exam questions for the 12th class Bihar board. Explore the distinct features of these questions and enhance your understanding of the exam pattern.

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