Subject

Biology

Class

NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

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1.

Select the wrong statement

  • Isogametes are similar in structure, function and behaviour

  • Anisogamets differ either in structure, function and behaviour

  • In oomycetes female gamete is smaller and motile, while male gamete is larger and non-motile

  • In oomycetes female gamete is smaller and motile, while male gamete is larger and non-motile


C.

In oomycetes female gamete is smaller and motile, while male gamete is larger and non-motile

Oomycetes (egg fungus) include water moulds, white rusts and downy mildews. In these, white rusts and downy mildews. In these, female gamete is smaller and motile, whereas male gamete is larger and non-motile. 
Isogametes are found in algae like Ulothrix, Chlamydomonas, Spirogyra etc., which are similar in structure, function and behaviour. 
Anisogametes are found in Chlamydomonas in which one gamete is larger and non-motile and the other one is motile and smaller.
Oogamy is the fusion of non-motile egg with motile sperm. The gametes differ both morphologically as well as physiologically. It occurs in Chlamydomonas, Fucus Chara, Volvox, etc

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2.

Which one of the following is not correct statement?

  • Herbarium houses dried, pressed and preserved plant specimens.

  • Botanical gardens have collection of living plants for reference

  • A museum has collection of photographs of plants and animals

  • A museum has collection of photographs of plants and animals

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3.

Isogamous condition with non-flagellated gametes is found in

  • Chlamydomonas

  • Spirogyra

  • Volvox

  • Volvox

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4.

Besides paddy fields, cyanobacteria are also found inside vegetative part of

  • Pinus

  • Cycas

  • Equisetum

  • Equisetum

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5.

Among bitter gourd mustard, brinjal, pumpkin, China rose, lupin, cucumber, sunn hemp, gram, guava, bean, chilli, plum, Petunia, potato tomato, rose, With potato, onion, aloe and tulip, how many plants have hypogynous flower?

  • Six

  • Ten

  • Fifteen

  • Fifteen

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6.

Interfascicular cambium develops from the cells of

  • medullary rays

  • xylem parenchyma

  • endodermis

  • endodermis

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7.

In China rose the flowers are

  • actinomorphic, hypogynous with twisted aestivation

  • actinomorphic, epigynous with valvate aestivation

  • zygomorphic, hypogynous with imbricate aestivation

  • zygomorphic, hypogynous with imbricate aestivation

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8.

Lenticels are involved in

  • Transpiration

  • Gaseous exchange

  • Food transport

  • Food transport

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9.

Seed coat is not thin, membranous in

  • maize

  • coconut

  • groundnut

  • groundnut

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10.

Transition state structure of the substrate formed during an enzymatic reaction is

  • transient but stable

  • permanent but unstable

  • transient and unstable

  • transient and unstable

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