Multiple Choice QuestionsWhich one of the following statements is wrong?
Golden algae are also called desmids
Eubacteria are also called false bacteria
Phycomycetes are also called algal fungi
Phycomycetes are also called algal fungi
Select the correct statement
Salvinia, Gingko and Pinus all are gymnosperm
Sequoia is oneis one ot the talles trees
The leaves of gymnosperm are not well adapted to extremes of climate
The leaves of gymnosperm are not well adapted to extremes of climate
Isogamous condition with non-flagellated gametes is found in
Chlamydomonas
Spirogyra
Volvox
Volvox
Which of the following are likely to be present in deep sea water?
Archaebacteria
Eubacteria
Blue-green algae
Blue-green algae
In which of the following gametophyte is not independent free-living?
Funaria
Marchantia
Pteris
Pteris
D.
Pteris
Gametophyte is phase of life cycle in which the gametes, i.e. egg and sperm are produced. In bryophytes (Funaria and Marchantia) fertilisation is dependent on water for the transfer of sperm to the egg. The gametophyte are fetilized outside the body. Therefore, they have independent free-living gametophyte.
In this respect Pteridophyte are similar to bryophytes i.e they still have free-living gametophytes. Pinaceae (Pinus) has well developed gametophyte in which sperm cells are fertilised with egg cell within the ovule. Hence, pinus is the correct option.
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
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