Subject

Biology

Class

NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

1.

In guava, cucurbits flowers are

  • hypogynous

  • epigynous

  • perigynous

  • Both (a) and (c)


2.

In floral formula (K) denotes

  • polysepalous

  • gamosepalous

  • polypetalous

  • gamopetalous


3.

Which of the following is photophosphorylation?

  • Production of ATP from ADP

  • Production of NADP

  • Synthesis of ADP from ATP

  • Production of PGA


4.

What is the structural element of cell wall?

  • Matrix

  • Microtubules

  • Microfibrils

  • Arabinogalactans


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5.

Which chemical is used for induction of polyploidy?

  • Cytokinin

  • Nitrous acid

  • Colchicine

  • IAA


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6.

In which book, Bentham and Hooker proposed their classification?

  • Genera Plantarum

  • Species Plantarum

  • Historia Plantarum

  • Historia Naturae


A.

Genera Plantarum

Bentham and Hooker published natural system of classification in their Genera Plantarum. This system was based on arrangement of leaves and venation pattern, number of members in floral whorls, cohesion of various floral organs, number of cotyledons and presence or absence of cover around the seeds.


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7.

When does a plant wilt?

  • When phloem is blocked

  • When xylem is blocked

  • Pith is removed

  • A few leaves are removed


8.

Which of the following sequence is a correct one for meiotic cell cycle?

  • GS G M G1

  • G1 G2 G2

  • G2 G1 G2

  • G1 G2 S


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9.

In the following pairs, where do you get lignin in both the element?

  • Tracheid and collenchyma

  • Sclerenchyma and sieve tube

  • Sclerenchyma and trachea

  • Parenchyma and endodermis


10.

From which of the following, photosynthetic autotrophs receive their energy?

  • Heat

  • Inorganic chemicals

  • Organic chemicals

  • Light


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