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ISC Class 12 Reproduction in Organisms & Plants — practice questions

Explore 98 free Reproduction in Organisms & Plants questions in ISC Class 12 Biology. Open each question or exercise to read its content, reference answers and available explanation.

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Reproduction in Organisms & Plants questions and exercises with answers

Showing questions 1–30 of 98.

Sort limbs by shared ancestryRead the answer and worked solution →Order the journey of a pollen grainRead the answer and worked solution →Spot the reproduction lieRead the answer and worked solution →Pick the pollination termRead the answer and worked solution →Flower reproduction bingoRead the answer and worked solution →Order the plant breeder's stepsRead the answer and worked solution →Spot the odd flower termRead the answer and worked solution →NEET · Biology · Asexual Reproduction — Mode ↔ ExampleRead the answer and worked solution →NEET · Bio · Human Reproduction · Number of ChromosomesRead the answer and worked solution →Microsporogenesis (pollen formation) is initiated when:Read the answer and worked solution →Parthenocarpy refers to:Read the answer and worked solution →Pollination is best defined as the transfer of pollen from:Read the answer and worked solution →Pollination by INSECTS is called:Read the answer and worked solution →In the fruit, the OVARY WALL develops into the:Read the answer and worked solution →The female reproductive whorl of a flower is theRead the answer and worked solution →Pollination of grasses occurs mainly throughRead the answer and worked solution →Self-incompatibility is a mechanism that preventsRead the answer and worked solution →Double fertilisation in angiosperms producesRead the answer and worked solution →In a typical dicot embryo, the number of cotyledons is:Read the answer and worked solution →NEET · Bio · Human Reproduction · Tap Pregnancy HormonesRead the answer and worked solution →NEET · Bio · Human Reproduction · Embryonic Development OrderRead the answer and worked solution →The 2021 amendment to the MTP Act extended the upper time-limit for pregnancy termination (for vulnerable categories) from 20 to:Read the answer and worked solution →Which process is this?Read the answer and worked solution →Two are true, one is notRead the answer and worked solution →Tap every factor the chapter says can lead to new speciesRead the answer and worked solution →Reading the mechanisms backRead the answer and worked solution →Assertion and reason: mechanismsRead the answer and worked solution →Tap every statement the chapter supportsRead the answer and worked solution →The Reproductive and Child Health (RCH) programme replaced India's earlier Family Planning Programme in:Read the answer and worked solution →The legal minimum age of marriage in India for males and females respectively is:Read the answer and worked solution →

Worked practice questions

Sort limbs by shared ancestry

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Left
Homologous
Items
  1. Item
    Bat forelimb
    Answer
    Homologous
  2. Item
    Human forelimb
    Answer
    Homologous
  3. Item
    Insect wing
    Answer
    Analogous
  4. Item
    Different origins
    Answer
    Analogous
  5. Item
    Same origin
    Answer
    Homologous
  6. Item
    Convergent result
    Answer
    Analogous
Right
Analogous
Instructions
Swipe left for homologous organs of one origin, right for analogous ones of different origins.
_Source: Qallery verified question bank, Class 12 State Board, topic Evolution_

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Order the journey of a pollen grain

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Steps
  1. Pollen lands on the stigma
  2. Pollen tube grows through the style
  3. Tube enters a synergid
  4. Double fertilisation occurs
  5. Endosperm and embryo develop
Instructions
Tap the events in the order they happen.
_Source: syllabus Biology, Ch 1 'Sexual Reproduction in Flowering Plants' (lebo101)_

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Spot the reproduction lie

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Questions
  1. False statement
    Endosperm forms before fertilisation
    Statements
    1. Angiosperms show double fertilisation
    2. Two male gametes take part in it
    3. Endosperm forms before fertilisation
  2. False statement
    Cleistogamous flowers demand pollinators
    Statements
    1. Cleistogamous flowers demand pollinators
    2. Cleistogamous flowers never open
    3. The pollen tube forms two male gametes
  3. False statement
    Pollen grains are produced inside the ovule
    Statements
    1. The micropyle is a tiny opening of the ovule
    2. Pollen grains are produced inside the ovule
    3. The ovule is also called the megasporangium
Instructions
One statement in each set is false. Tap it.
_Source: syllabus Biology, Ch 1 'Sexual Reproduction in Flowering Plants' (lebo101)_

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