Agar is not obtained from

  • Gelidium

  • Gracilaria

  • Volvox

  • All of these

Agar is not used in

  • To grow microbes

  • To prepare ice-creams

  • To prepare jellies

  • To supplement protein for space travellers

Chlorella is not

  • An unicellular alga

  • Rich in proteins

  • Used as food supplement even by space travellers

  • Used to grow microbes

Which of the marine algae is not used as food?

  • Laminaria

  • Sargassum

  • Porphyra

  • Volvox

The members of chlorophyceae are not

  • Green algae

  • Unicellular, colonial or filamentous plant body

  • Pigments chlorophyll a and b

  • Pigments are localised in the cytoplasm

Chloroplasts can be discoid, plate-like, reticulate, cup-shaped, spiral or ribbon-shaped in different species. Such variety can be found in

  • Chlorophyceae

  • Phaeophyceae

  • Rhodophyceae

  • All of these

Pyrenoid is

  • Storage bodies located in cytoplasm of chloropbyceae

  • Storage bodies located in cytoplasm of Phaeophyceae

  • Storage bodies located in chloroplast of chlorophyceae

  • Storage bodies located in chloroplast of Phaeophyceae

Green algae usually have a rigid cell wall made of an inner layer of ….…. and outer layer of ………

  • Pectose, Cellulose

  • Cellulose, Pectose

  • Algin, carrageenan

  • Carrageen, Algin

Examples of Green alga is not

  • Chlamydomonas,Volvox,Ulothrix

  • Spirogyra

  • Chara

  • Fucus

Vegetative reproduction in chlorophyceae takes place by

  • Fragmentation+ spore formation

  • Only spore formation

  • Only Fragmentation

  • Isogamous

Asexual reproduction in chlorophyceae is by

(1) Zoospore formation in Antheriodiophore

  • (4) Both 1 nd 2

  • (2) Fragmentation

  • (3) Zoospore formation in Zoosporangia

  • 4

Zoospore formed during asexual reproduction in chlorophyceae are

  • Flagellated

  • Non-flagellated

  • Ciliated

  • Non ciliated

This picture is associated with an organism that belongs to a class. Which of the following features is not correct about that class?

                                  

  • Three types of sexual reproduction

  • A variety of chloroplast in different species

  • Inner pectose and outer cellulose in cell wall

  • Pigments-choorophyll a and chlorophyll b

Which of the following statement is correct?

 
  • Ovules are not enclosed by ovary wall in gymnosperms
  • Selaginella is heterosporous, while Salvinia is homosporous
  • Horsetails are gymnosperms
  • Stems are usually unbranched in both Cycas and Cedrus
Which one is wrongly matched?

  • Uniflagellate gametes - Polysiphonia

  • Biflagellate zoospores - Brown algae
  • Gemma cups - Marchantia
  • Unicellular organism - Chlorella

In bryophytes and pteridophytes, transport of male gametes requires

 
  • insects
  • birds
  • water
  • wind

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

 

Male gametes are flagellated in

 

Which one of the following is wrong about Chara?

An alga which can be employed as food for human beings :

Gametophyte in the pteridophytes is

(i) Small, inconspicuous.
(ii) Long lived, unicellular.
(iii) Mostly photosynthetic thalloid or saprophytic.
(iv) Short lived, haploid.

How many statements are correct w.r.t. gametophyte?

2.Three

Development of the zygotes into young embryo takes within the female gametophytes in

Monoecious plant of Chara shows the occurrence of :
Mannitol is a sugar alcohol. It is as stored food in
Archegoniophore is present in

Mannitol is the stored food in

Reduction in vascular tissue, mechanical tissue and cuticle is characteristic of

 
Which one of the following is heterosporous?

Pinus seed cannot germinate and establish without fungal association. This is because:

From evolutionary point of view, retention of the female gametophyte with developing young embryo on the parent sporophyte for some time, is first observed in :
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