Biology : Plant Kingdom

Source of commercial chewing gum latex is

• Hevea brasiliensis

• Carica papaya

• Ficus elastica

• Achras sapota

The edible dry fruit 'chigoza' is

• fruit of Cycas

• fruit of Pinus gerardiana

• seed of Cycas

• seed of Pinus gerardiana

Which of the following is not the feature of gymnosperms?

• parallel venation

• perennial plants

• distinct branches (long and short branches)

• xylem with vessels

Indusium is found in

• algae

• ferns

• moss

• Cycas

In coconut, the liquid endosperm is formed because

• Karyokinesis is not followed by cytokinesis

• Karyokinesis is followed by cytokinesis

• Formation of the liquid endosperm is not dependent upon karyokinesis and cytokinesis

•  None of the above

Water bloom is generally caused by

• green algae

• blue- green algae

• bacteria

• Hydrilla

Which one of the following is not a flower?

• Shoe-flower

• Sunflower

• Larkspur

• Water lily

Bacteria are considered plant because they

• are green in colour

• have rigid cell wall

• have chlorophyll

• have stomata

Read the following statements and choose the correct option.

I. Leptosporangiate development of sporangium is found in all membersPteropsida.

II. Seed habit is shown by sellaginella.

III. Gnetum leaves are monomorphic and pinnately compound.

IV. Sporic meiosis is found in Volvolx, Chalmydomonas and Ulothrix.

Choose the correct option.

• I and IV

• I and II

• I, II and IV

• All of these

In which one of the family formations of endosperm doesn’t take place?

• Orchidaceae

• Cactaceae

• Ranunculaceae

• Malvaceae