Biology : Plant Kingdom

In which of the following gametophyte is not independent free-living?

• Funaria

• Marchantia

• Pteris

• Pteris

Which one of the following statements is wrong?

• Algin and carrageenian are products of algae.

• Agar-agar is obtained from Gelidium and Gracilaria

• Chlorella and Spirulina are used as space food

• Chlorella and Spirulina are used as space food

Which one is a wrong statement?

• Archegonia are found in Bryophyta, Pteridophyta and Gymnosperms

• Mucor has biflagellate zoospores

• Haploid endosperm is typical feature of gymnosperms

• Haploid endosperm is typical feature of gymnosperms

An alga which can be employed as food for human being is 

• Ulothrix

• Chlorella

• Spirogyra

• Spirogyra

Which one of the following is a correct statements?

• Pteridophyte gametophyte has a protonemal and leafy stage

• In gymnosperms female gametophyte is free-living

• Antheridiophores and archegoniophores are present in pteridophytes

• Antheridiophores and archegoniophores are present in pteridophytes

They cyanobacteria area also referred to as

• protists

• golden algae

• slime moulds

• slime moulds

Gymnosperms are also called soft wood spermatophytes because they lack

• cambium

• phloem fibres

• thick-walled tracheids

• thick-walled tracheids

Read the following five statements and answer as asked to them
I. In Equisetum the female gametophyte is retained on the parent sporophyte.
II. In Ginkgo male gametophyte is not independent.
III. The sporophyte in Riccia is more developed than that in Polytrichum.
IV.  Sexual reproduction in Volvox is isogamous.
V. The spores of the above statements are correct?

• Two

• Three

• Four

• Four

The second stage of hydrosere is occupied by plants like

• Azolla

• Typha

• Salix

• Salix

Read the following five statements (I to V) and select the option with all correct statements.
I Mosses and lichens are the first organisms to colonise a bare rock. 
II .Selaginella is a homosporous pteridophyte.
III. Coralloid roots in Cycas have VAM.
IV. Main plant body in bryophytes is gametophytic, whereas in pteridophytes it is sporophytic.
V. In gymnosperms, male and female gametophytes are present within sporangia located on sporophyte.

• I, III and IV

• II, III and IV

• I, IV and V

• I, IV and V