Which one of the following plants is monoecious?

  • Marchantia

  • Pinus

  • Cycas

  • Cycas


B.

Pinus

Pinus is monoecious, which bear male cone as well as a female cone on the same tree on separate branches.
Marchantia Cyas and papaya are dioecious plants

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What is common between vegetative reproduction and apomixis?

  • Both are applicable to only dicot plants

  • Both bypass the flowering phase

  • Both occur round the year

  • Both occur round the year


D.

Both occur round the year

Both vegetative and apomixis are an asexual reproduction. The progeny produced are genetically similar to a parent and are called clone.

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Keel  is characteristic of the flowers of 

  • gulmohur

  • cassia

  • Calatropis

  • Calatropis


D.

Calatropis

The bean or legume family is one of the most common plant families. Flowers in bean family typically have their two bottom petals grown together along one side forming a structure a bit like a narrow but deep scoop. This special Bean- family kind of two -in-one petal is called the keel, like the keel of a boat. Bean blossoms with the configuration are said to be papilionaceous.

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Examine the figure below and select the right option giving all the four part (A, B,C and D) correctly identified.

  • A

    B

    C

    D

    Archegoni Ophore

    Female thallus

    Gemma cup

    Rhizoids

  • A

    B

    C

    D

    Archegoni

    Female thallus Bud Foot
  • A

    B

    C

    D

    Seta

    Sporophyte Protonema Rhizods
  • A

    B

    C

    D

    Seta

    Sporophyte Protonema Rhizods

A.

A

B

C

D

Archegoni Ophore

Female thallus

Gemma cup

Rhizoids

Marchantia, a liverwort, is dioecious. The female thallus bears female sex organs called archegonia on special branches called archegoniophores. The plant's body is anchored by unicellular rhizoids.

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In cloning of cattle a fertillized egg is taken out of the mother’s womb and

  • the egg is divided into 4 pairs of cells which are implanted into the womb of other cows

  • in the eight cell stage, cells are separated and cultured until small embryos are formed which are implanted into the womb of other cow

  • in the eight cell stage the individual cells are separated under electrical field for further development in culture media

  • in the eight cell stage the individual cells are separated under electrical field for further development in culture media


B.

in the eight cell stage, cells are separated and cultured until small embryos are formed which are implanted into the womb of other cow

In cloning of cattle a fertilized egg divides in 2, then in 4 and then in 8. This embryo is carefully removed from the womb. The embryonic cells are then separated using enzyme. Each isolated cell is kept in a nutrient medium and later implanted in the womb of a different 'host mother' cow.

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