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Botany Flashcards

7 cards from real NEET practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

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  1. Which plant hormone is responsible for apical dominance?

    Answer: Auxin

    Auxin produced at the apical bud suppresses the growth of lateral buds, a phenomenon called apical dominance.

  2. The fluid-mosaic model of plasma membrane was proposed by:

    Answer: Singer and Nicolson

    Singer and Nicolson proposed the fluid-mosaic model in 1972, describing the membrane as a fluid phospholipid bilayer with embedded proteins.

  3. Kranz anatomy is typically found in plants that perform:

    Answer: C4 photosynthesis

    Kranz anatomy, with bundle sheath cells surrounding mesophyll cells, is characteristic of C4 plants like maize and sugarcane.

  4. Which of the following is NOT a characteristic of gymnosperms?

    Answer: Double fertilization

    Double fertilization is a characteristic of angiosperms, not gymnosperms; gymnosperms have simple fertilization.

  5. The enzyme RuBisCO catalyzes which step in the Calvin cycle?

    Answer: Carboxylation of RuBP

    RuBisCO (ribulose bisphosphate carboxylase/oxygenase) catalyzes the fixation of CO2 by adding it to RuBP to form two molecules of 3-PGA.

  6. Vernalization refers to:

    Answer: Flowering promoted by cold temperature treatment

    Vernalization is the process by which prolonged cold temperature exposure promotes or accelerates flowering in certain plants.

  7. Which type of placentation is found in Dianthus (carnation)?

    Answer: Free central

    Free central placentation, where ovules are attached to a central column without septa, is found in Dianthus and other members of Caryophyllaceae.

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